| Records |
Author  |
Vanwelkenhuysen, I.; Gijbels, R.; Geuens, I. |
| Title |
Influence of the temperature on the morphology of silver behenate microcrystals |
Type |
P3 Proceeding |
| Year |
1998 |
Publication |
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Abbreviated Journal |
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| Volume |
|
Issue |
|
Pages |
326-327 |
| Keywords |
P3 Proceeding; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT) |
| Abstract |
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| Address |
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| Corporate Author |
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Thesis |
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| Publisher |
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Place of Publication |
Antwerp |
Editor |
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| Language |
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Wos |
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Publication Date |
0000-00-00 |
| Series Editor |
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Series Title |
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Abbreviated Series Title |
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| Series Volume |
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Series Issue |
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Edition |
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| ISSN |
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ISBN |
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Additional Links |
UA library record |
| Impact Factor |
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Times cited |
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Open Access |
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| Notes |
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Approved |
Most recent IF: NA |
| Call Number |
UA @ lucian @ c:irua:24920 |
Serial |
1655 |
| Permanent link to this record |
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| |
| Author |
Vanrompay, H. |
| Title |
Toward fast and dose efficient electron tomography |
Type |
Doctoral thesis |
| Year |
2020 |
Publication |
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Abbreviated Journal |
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| Volume |
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Issue |
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Pages |
207 p. |
| Keywords |
Doctoral thesis; Electron microscopy for materials research (EMAT) |
| Abstract |
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Thesis |
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Place of Publication |
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Wos |
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Publication Date |
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| Series Editor |
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Series Title |
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Abbreviated Series Title |
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Series Issue |
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Edition |
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| ISSN |
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ISBN |
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Additional Links |
UA library record |
| Impact Factor |
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Times cited |
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Open Access |
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| Notes |
|
Approved |
Most recent IF: NA |
| Call Number |
UA @ admin @ c:irua:169852 |
Serial |
6632 |
| Permanent link to this record |
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| |
| Author |
Vanmeert, F.; Van der Snickt, G.; Legrand, S.; Janssens, K. |
| Title |
Velázquez? A portrait of Pope Innocent X : an X-ray imaging investigation (II) |
Type |
H3 Book chapter |
| Year |
2019 |
Publication |
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Abbreviated Journal |
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| Volume |
|
Issue |
|
Pages |
132-141
T2 - Velázquez : Anregungen, Vorschläge, L |
| Keywords |
H3 Book chapter; Art; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
| Abstract |
Encompassing a broad spectrum of methodological approaches and aims, the scholars contributing to this volume offer renewed perspectives on the multifaceted oeuvre of Diego Velázquez. The seventeenth-century artist’s exceptional religious works as well as his numerous portraits are examined within the social and historical context of Velázquez’s milieu which included both the Spanish court as well as circles comprising important intellectual figures of his time. Following a close investigation of his works, which also includes the results of recent technological examinations on his paintings, the contributors to this volume offer new, exciting findings and discussions on the inspirations, sources and possible intentions of Velázquez. |
| Address |
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Thesis |
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| Publisher |
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Place of Publication |
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Editor |
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Wos |
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Publication Date |
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| Series Editor |
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Series Title |
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Abbreviated Series Title |
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| Series Volume |
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Series Issue |
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Edition |
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| ISSN |
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ISBN |
978-3-99020-155-8 |
Additional Links |
UA library record |
| Impact Factor |
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Open Access |
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| Notes |
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Approved |
no |
| Call Number |
UA @ admin @ c:irua:190783 |
Serial |
8736 |
| Permanent link to this record |
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| |
| Author |
Vanmeert, F.; De Meyer, S.; Gestels, A.; Clerici, E.A.; Deleu, N.; Legrand, S.; Van Espen, P.; Van der Snickt, G.; Alfeld, M.; Dik, J.; Monico, L.; De Nolf, W.; Cotte, M.; Gonzalez, V.; Saverwyns, S.; Depuydt-Elbaum, L.; Janssens, K. |
| Title |
Non-invasive and non-destructive examination of artists’ pigments, paints and paintings by means of X-ray imaging methods |
Type |
H1 Book chapter |
| Year |
2022 |
Publication |
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Abbreviated Journal |
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| Volume |
|
Issue |
|
Pages |
317-357 |
| Keywords |
H1 Book chapter; Art; Antwerp Cultural Heritage Sciences (ARCHES); Antwerp X-ray Imaging and Spectroscopy (AXIS) |
| Abstract |
Recent studies in which X-ray beams of (sub)micrometre to millimetre dimensions have been used for non-destructive analysis and characterization of pigments, minute paint samples and/or entire paintings from fifteenth to twentieth century artists are discussed. The overview presented encompasses the use of laboratory and synchrotron radiation-based instrumentation and deals with the use of several variants of X-ray fluorescence (XRF) as a method of elemental analysis and imaging as well as with the combined use with X-ray diffraction (XRD). Microscopic XRF (μ-XRF) is a variant of the XRF method able to visualize the elemental distribution of key elements, mostly metals, on the scale from 1 μm to 100 μm present inside multi-layered micro samples taken from paintings. In the context of the characterization of artists’ pigments subjected to natural degradation, in many cases the use of methods limited to elemental analysis or imaging does not suffice to elucidate the chemical transformations that have taken place. However, at synchrotron facilities, combinations of μ-XRF with related methods such as μ-XAS (microscopic X-ray absorption spectroscopy) and μ-XRD have proven themselves to be very suitable for such studies. Since microscopic investigation of a relatively limited number of minute paint samples may not yield representative information about the complete artefact they were taken from, several methods for macroscopic, non-invasive imaging have recently been developed. Combined macroscopic XRF/XRD scanning is able to provide a fairly complete overview of the inorganic pigments employed to create a work of art, to answer questions about ongoing degradation phenomena and about its authenticity. As such these newly developed non-invasive and highly specific imaging methods are of interest for many cultural heritage stakeholders. |
| Address |
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Thesis |
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Place of Publication |
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Editor |
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| Language |
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Wos |
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Publication Date |
2022-09-08 |
| Series Editor |
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Series Title |
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Abbreviated Series Title |
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| Series Volume |
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Series Issue |
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Edition |
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| ISSN |
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ISBN |
978-3-030-86864-2 |
Additional Links |
UA library record |
| Impact Factor |
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Times cited |
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Open Access |
Not_Open_Access |
| Notes |
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Approved |
Most recent IF: NA |
| Call Number |
UA @ admin @ c:irua:190777 |
Serial |
7183 |
| Permanent link to this record |
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|
| |
| Author |
Vanmeert, F. |
| Title |
Highly specific X-ray powder diffraction imaging at the macroscopic and microscopic scale |
Type |
Doctoral thesis |
| Year |
2019 |
Publication |
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Abbreviated Journal |
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| Volume |
|
Issue |
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Pages |
|
| Keywords |
Doctoral thesis; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
| Abstract |
At or below the surface of painted works of art, valuable information is present that provides insights into an object’s past, such as the artist’s technique and the creative process that was followed or its conservation history, but also on its current state of preservation. Typically, a (very) limited set of small paint samples is taken which provide direct access to the individual paint layers. The chemical build-up of these layers can then be investigated in great detail using various microscopic analytical methods. However, in recent years a new trend towards both elemental and chemical imaging techniques has been set which are capable of visualizing the (often) heterogeneous composition of painted objects on a macroscopic scale. In this dissertation, various forms of specificity attainable with X‑ray powder diffraction (XRPD) imaging are explored: at the chemical, material and spatial level. This high specificity is illustrated throughout several applications stemming from the field of cultural heritage, both at the macroscopic (MA) and microscopic (µ) scale. As a first step, XRPD imaging was transformed to a transportable instrument that can be employed for the in situ investigation of artworks, e.g., inside museums and conservation workshops. With this unique instrument large‑scale maps (cm2 – dm2) reflecting the distribution of crystalline phases on/below the surface of flat painted artefacts can be visualized in a noninvasive manner. In this way compound-specific information was attained which can be related to original pigments or materials that have been added in a later stage and even degradation/secondary products that have formed spontaneously inside the paint layers. Additionally, with MA‑XRPD imaging it was possible to link quantitative information of pigment compositions and preferred orientation effects to the 2D compound‑specific distribution images, allowing for a further distinction between very similar artists’ materials. Furthermore, promising results for the limited depth-selectivity of this technique, obtained by exploiting the small shift in the position of the diffraction signals originating from the layered sequence of the pigments, are shown. Finally, a minute paint sample from Wheat stack under a cloudy sky by Van Gogh was investigated at a synchrotron radiation facility with tomographic µ‑XRPD imaging at the microscopic scale. The high chemical and spatial specificity of this imaging method was exploited to further elucidate the degradation pathway of the red lead pigment. |
| Address |
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Series Issue |
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Edition |
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ISBN |
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Additional Links |
UA library record |
| Impact Factor |
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Times cited |
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Open Access |
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| Notes |
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Approved |
no |
| Call Number |
UA @ admin @ c:irua:159805 |
Serial |
8043 |
| Permanent link to this record |
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| Author |
Vanherck, J. |
| Title |
Spontaneous and induced magnetisation in two-dimensional and bulk Heisenberg ferromagnets : a quantum mechanical treatment |
Type |
Doctoral thesis |
| Year |
2020 |
Publication |
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Abbreviated Journal |
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| Volume |
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Issue |
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Pages |
160 p. |
| Keywords |
Doctoral thesis; Condensed Matter Theory (CMT) |
| Abstract |
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Edition |
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Additional Links |
UA library record |
| Impact Factor |
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Times cited |
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Open Access |
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| Notes |
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Approved |
Most recent IF: NA |
| Call Number |
UA @ admin @ c:irua:171875 |
Serial |
6612 |
| Permanent link to this record |
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| Author |
Vandevijvere, M.; Van de Voorde, L.; Caen, J.; van Espen, P.; Vekemans, B.; Vincze, L.; Schalm, O. |
| Title |
Manufacturing techniques and production defects of 16th-17th century majolica tiles from Antwerp (Belgium) |
Type |
H2 Book chapter |
| Year |
2013 |
Publication |
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Abbreviated Journal |
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| Volume |
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Issue |
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Pages |
169-176
T2 - Recent advances in glass, stained-gla |
| Keywords |
H2 Book chapter; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation); Antwerp Cultural Heritage Sciences (ARCHES) |
| Abstract |
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| Address |
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| Corporate Author |
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Thesis |
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| Publisher |
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Place of Publication |
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Editor |
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| Language |
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Wos |
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Publication Date |
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| Series Editor |
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Series Title |
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Abbreviated Series Title |
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| Series Volume |
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Series Issue |
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Edition |
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| ISSN |
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ISBN |
978-90-8932-113-8 |
Additional Links |
UA library record |
| Impact Factor |
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Times cited |
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Open Access |
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| Notes |
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Approved |
no |
| Call Number |
UA @ admin @ c:irua:115032 |
Serial |
8199 |
| Permanent link to this record |
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| Author |
Vanderborght, B.; Van Grieken, R. |
| Title |
Energy-dispersive X-ray fluorescence for trace metals analysis of water |
Type |
H3 Book chapter |
| Year |
1975 |
Publication |
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Abbreviated Journal |
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| Volume |
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Issue |
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Pages |
1-9
T2 - Nuclear techniques in environmental resea |
| Keywords |
H3 Book chapter; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
| Abstract |
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Series Issue |
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Edition |
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ISBN |
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Additional Links |
UA library record |
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Times cited |
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Open Access |
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| Notes |
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Approved |
no |
| Call Number |
UA @ admin @ c:irua:117461 |
Serial |
7905 |
| Permanent link to this record |
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| Author |
Vandeputte, D.; Verbueken, A.; Jacob, W.; de Broe, M.; Van Grieken, R. |
| Title |
Localisation of lead in tissues of poisoned rats by laser microprobe mass analysis (LAMMA) |
Type |
P3 Proceeding |
| Year |
1986 |
Publication |
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Abbreviated Journal |
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| Volume |
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Issue |
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Pages |
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| Keywords |
P3 Proceeding; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation); Laboratory Experimental Medicine and Pediatrics (LEMP) |
| Abstract |
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Thesis |
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Place of Publication |
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Editor |
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Wos |
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Publication Date |
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| Series Editor |
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Series Title |
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Abbreviated Series Title |
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Series Issue |
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Edition |
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ISBN |
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Additional Links |
UA library record |
| Impact Factor |
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Times cited |
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Open Access |
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| Notes |
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Approved |
no |
| Call Number |
UA @ admin @ c:irua:117513 |
Serial |
8180 |
| Permanent link to this record |
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| Author |
Vandeputte, D.; Ameloot, P.; Van Grieken, R. |
| Title |
Localisation of lead and fluoride in cultured tooth germs by laser microprobe mass analysis (LAMMA) |
Type |
H3 Book chapter |
| Year |
1987 |
Publication |
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Abbreviated Journal |
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| Volume |
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Issue |
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Pages |
90-93
T2 - Trace elements in human health and dise |
| Keywords |
H3 Book chapter; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Edition |
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ISBN |
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Additional Links |
UA library record |
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Times cited |
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Open Access |
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| Notes |
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Approved |
no |
| Call Number |
UA @ admin @ c:irua:117524 |
Serial |
8179 |
| Permanent link to this record |
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| Author |
vanden Berghe, D.; Deelstra, H.; Robberecht, H.; Van Grieken, R. |
| Title |
Selenium content of soils and rye grass (Lolium multiflorum) in Belgium |
Type |
H3 Book chapter |
| Year |
1981 |
Publication |
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Abbreviated Journal |
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| Volume |
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Issue |
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Pages |
85-105
T2 - Mineral elements '80 : part 1 |
| Keywords |
H3 Book chapter; Pharmacology. Therapy; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
| Abstract |
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Edition |
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ISBN |
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Times cited |
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Open Access |
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| Notes |
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Approved |
no |
| Call Number |
UA @ admin @ c:irua:117483 |
Serial |
8506 |
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| Author |
Vandelannoote, R.; Blommaert, W.; Van 't dack, L.; van Grieken, R.; Gijbels, R. |
| Title |
Multi-element trace analysis of geothermal waters : problems, characteristics and applicability |
Type |
P3 Proceeding |
| Year |
1985 |
Publication |
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Abbreviated Journal |
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| Volume |
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Issue |
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Pages |
523-527 |
| Keywords |
P3 Proceeding; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT); AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
| Abstract |
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| Address |
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Thesis |
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| Publisher |
Chemie |
Place of Publication |
Heidelberg |
Editor |
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Wos |
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Publication Date |
0000-00-00 |
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Abbreviated Series Title |
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Series Issue |
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Edition |
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Additional Links |
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Open Access |
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| Notes |
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Approved |
no |
| Call Number |
UA @ lucian @ c:irua:111511 |
Serial |
2210 |
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| Author |
Vandekerckhove, T.G.L.; Courtens, E.N.P.; Prat, D.; Boon, N.; Vlaeminck, S.E. |
| Title |
The rise of thermophilic biotechnology for nitrogen removal |
Type |
P3 Proceeding |
| Year |
2016 |
Publication |
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Abbreviated Journal |
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| Volume |
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Issue |
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Pages |
17 p.
T2 - WEF/IWA Nutrient Removal and Recovery C |
| Keywords |
P3 Proceeding; Engineering sciences. Technology; Sustainable Energy, Air and Water Technology (DuEL) |
| Abstract |
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Thesis |
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Wos |
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Publication Date |
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Series Title |
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Abbreviated Series Title |
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Series Issue |
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Edition |
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ISBN |
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Additional Links |
UA library record |
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Times cited |
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Open Access |
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| Notes |
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Approved |
no |
| Call Number |
UA @ admin @ c:irua:151125 |
Serial |
8481 |
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| Author |
Vandekerckhove, T.; Courtens, E.N.P.; Prat, D.; Vilchez-Vargas, R.; Vital, M.; Pieper, D.H.; Meerbergen, K.; Lievens, B.; Boon, N.; Vlaeminck, S.E. |
| Title |
Transitioning from mesophilic to thermophilic nitrification: shaping a niche for archaeal ammonia oxidizers |
Type |
P3 Proceeding |
| Year |
2016 |
Publication |
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Abbreviated Journal |
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| Volume |
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Issue |
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Pages |
9 p.
T2 - WEF/IWA Nutrient Removal and Recovery Co |
| Keywords |
P3 Proceeding; Engineering sciences. Technology; Sustainable Energy, Air and Water Technology (DuEL) |
| Abstract |
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Editor |
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Wos |
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Series Title |
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Abbreviated Series Title |
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Series Issue |
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Edition |
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ISBN |
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Additional Links |
UA library record |
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Times cited |
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Open Access |
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| Notes |
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Approved |
no |
| Call Number |
UA @ admin @ c:irua:151126 |
Serial |
8697 |
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| Author |
Van Winckel, T.; Yapuwa, H.; Wett, B.; Sturm, B.; Vlaeminck, S.E.; Al-Omari, A.; Murthy, S.; De Clippeleir, H. |
| Title |
Its time to harvest : combining internal selection and flocculent external selection to maximize carbon capture efficiency |
Type |
P3 Proceeding |
| Year |
2017 |
Publication |
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Abbreviated Journal |
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| Volume |
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Issue |
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Pages |
3 p.
T2 - WEFTEC.17, 30 September 4 October 2017, |
| Keywords |
P3 Proceeding; Engineering sciences. Technology; Sustainable Energy, Air and Water Technology (DuEL) |
| Abstract |
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Abbreviated Series Title |
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Series Issue |
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Edition |
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ISBN |
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Additional Links |
UA library record |
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Times cited |
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Open Access |
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| Notes |
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Approved |
no |
| Call Number |
UA @ admin @ c:irua:151112 |
Serial |
8133 |
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| Author |
Van Winckel, T.; De Clippeleir, H.; Yapuwa, H.; Wett, B.; Bott, C.; Sturm, B.; Vlaeminck, S.E.; Al-Omari, A.; Murthy, S. |
| Title |
Lets settle together? Extending external selection from mainstream deammonification to high-rate activated sludge |
Type |
P3 Proceeding |
| Year |
2016 |
Publication |
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Abbreviated Journal |
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| Volume |
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Issue |
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Pages |
13 p.
T2 - WEF/IWA Nutrient Removal and Recovery C |
| Keywords |
P3 Proceeding; Engineering sciences. Technology; Sustainable Energy, Air and Water Technology (DuEL) |
| Abstract |
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Series Title |
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Abbreviated Series Title |
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Series Issue |
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Edition |
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ISBN |
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Additional Links |
UA library record |
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Times cited |
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Open Access |
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| Notes |
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Approved |
no |
| Call Number |
UA @ admin @ c:irua:151131 |
Serial |
8171 |
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| Author |
Van Winckel, T.; De Clippeleir, H.; Mancell-Egala, A.; Rahman, A.; Wett, B.; Bott, C.; Sturm, B.; Vlaeminck, S.E.; Al-Omari, A.; Murthy, S. |
| Title |
Balancing flocs and granules by external selectors to increase capacity in high-rate activated sludge systems |
Type |
P3 Proceeding |
| Year |
2016 |
Publication |
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Abbreviated Journal |
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| Volume |
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Issue |
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Pages |
6 p.
T2 - WEFTEC.16, 24 - 28 September 2016, New O |
| Keywords |
P3 Proceeding; Engineering sciences. Technology; Sustainable Energy, Air and Water Technology (DuEL) |
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Wos |
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ISBN |
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Additional Links |
UA library record |
| Impact Factor |
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Times cited |
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Open Access |
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Approved |
no |
| Call Number |
UA @ admin @ c:irua:151122 |
Serial |
7548 |
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| |
| Author |
Van Winckel, T.; Al-Omari, A.; Takás, I.; Wett, B.; Bachmann, B.; Sturm, B.; Bott, C.; Vlaeminck, S.E.; Murthy, S.; De Clippeleir, H. |
| Title |
Conceptual framework for deammonification in a combined floc-granule system : impact of aeration control, external selector and bioaugmentation based on full-scale data from WWTP in Strass |
Type |
P3 Proceeding |
| Year |
2017 |
Publication |
|
Abbreviated Journal |
|
| Volume |
|
Issue |
|
Pages |
16 p.
T2 - IWA 2017 Conference on Sustainable Wast |
| Keywords |
P3 Proceeding; Engineering sciences. Technology; Sustainable Energy, Air and Water Technology (DuEL) |
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Wos |
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Abbreviated Series Title |
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Edition |
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ISBN |
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Additional Links |
UA library record |
| Impact Factor |
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Times cited |
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Open Access |
|
| Notes |
|
Approved |
no |
| Call Number |
UA @ admin @ c:irua:151109 |
Serial |
7722 |
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| |
|
| |
| Author |
Van Wesenbeeck, K.; Hauchecorne, B.; Lenaerts, S. |
| Title |
Plasma assisted catalysis : an efficient and sustainable indoor air purification technology |
Type |
P3 Proceeding |
| Year |
2012 |
Publication |
|
Abbreviated Journal |
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| Volume |
|
Issue |
|
Pages |
|
| Keywords |
P3 Proceeding; Engineering sciences. Technology; Sustainable Energy, Air and Water Technology (DuEL) |
| Abstract |
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| Address |
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Thesis |
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| Publisher |
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Place of Publication |
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Editor |
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Wos |
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Publication Date |
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| Series Editor |
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Series Title |
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Abbreviated Series Title |
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Series Issue |
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Edition |
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ISBN |
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Additional Links |
UA library record |
| Impact Factor |
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Times cited |
|
Open Access |
|
| Notes |
|
Approved |
Most recent IF: NA |
| Call Number |
UA @ admin @ c:irua:127490 |
Serial |
5981 |
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| |
|
| |
| Author |
Van Wesenbeeck, K.; Hauchecorne, B.; Lenaerts, S. |
| Title |
Plasma catalysis : integration of a photocatalytic coating in a corona discharge unit |
Type |
P3 Proceeding |
| Year |
2013 |
Publication |
|
Abbreviated Journal |
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| Volume |
|
Issue |
|
Pages |
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| Keywords |
P3 Proceeding; Engineering sciences. Technology; Sustainable Energy, Air and Water Technology (DuEL) |
| Abstract |
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| Address |
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Thesis |
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| Publisher |
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Place of Publication |
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Editor |
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Wos |
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Series Title |
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Abbreviated Series Title |
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Series Issue |
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Edition |
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ISBN |
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Additional Links |
UA library record |
| Impact Factor |
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Times cited |
|
Open Access |
|
| Notes |
|
Approved |
Most recent IF: NA |
| Call Number |
UA @ admin @ c:irua:127487 |
Serial |
5982 |
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| |
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| |
| Author |
Van Wesenbeeck, K.; Hauchecorne, B.; Lenaerts, S. |
| Title |
Plasmacatalysis : a sustainable and efficient indoor air treatment |
Type |
P3 Proceeding |
| Year |
2015 |
Publication |
|
Abbreviated Journal |
|
| Volume |
|
Issue |
|
Pages |
|
| Keywords |
P3 Proceeding; Engineering sciences. Technology; Sustainable Energy, Air and Water Technology (DuEL) |
| Abstract |
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| Address |
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| Corporate Author |
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Thesis |
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| Publisher |
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Place of Publication |
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Editor |
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Wos |
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Publication Date |
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Series Title |
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Abbreviated Series Title |
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Series Issue |
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Edition |
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ISBN |
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Additional Links |
UA library record |
| Impact Factor |
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Times cited |
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Open Access |
|
| Notes |
|
Approved |
Most recent IF: NA |
| Call Number |
UA @ admin @ c:irua:127488 |
Serial |
5984 |
| Permanent link to this record |
| |
|
| |
| Author |
Van Wesenbeeck, K. |
| Title |
Plasma catalysis as an efficient and sustainable air purification technology |
Type |
Doctoral thesis |
| Year |
2016 |
Publication |
|
Abbreviated Journal |
|
| Volume |
|
Issue |
|
Pages |
171 p. |
| Keywords |
Doctoral thesis; Engineering sciences. Technology; Sustainable Energy, Air and Water Technology (DuEL) |
| Abstract |
|
| Address |
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| Corporate Author |
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Thesis |
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| Publisher |
|
Place of Publication |
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Editor |
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| Language |
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Wos |
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Publication Date |
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| Series Editor |
|
Series Title |
|
Abbreviated Series Title |
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| Series Volume |
|
Series Issue |
|
Edition |
|
| ISSN |
|
ISBN |
978-90-5728-514-1 |
Additional Links |
UA library record |
| Impact Factor |
|
Times cited |
|
Open Access |
|
| Notes |
|
Approved |
no |
| Call Number |
UA @ admin @ c:irua:135267 |
Serial |
8388 |
| Permanent link to this record |
| |
|
| |
| Author |
van Walsem, J. |
| Title |
Design and optimization of a photocatalytic reactor for air purification in ventilation systems |
Type |
Doctoral thesis |
| Year |
2019 |
Publication |
|
Abbreviated Journal |
|
| Volume |
|
Issue |
|
Pages |
158 p. |
| Keywords |
Doctoral thesis; Engineering sciences. Technology; Sustainable Energy, Air and Water Technology (DuEL) |
| Abstract |
Photocatalysis has been labeled for decades as a promising technique for air purification. The principle seems straightforward and requires a photocatalyst that is immobilized on a substrate, and one or more UV sources to activate the photocatalyst. No waste products are produced, the reactions occur in mild conditions and the supplies are relatively cheap. Yet it seems that the commercialization of photocatalytic systems does not break through on the global market. The aim of this thesis is to identify and tackle the bottlenecks that impede commercialization from an application-oriented approach. The problem of indoor air pollution is enhanced by the fact that people spend more and more time indoors and that ventilation is kept to a minimum as an energy-saving measure. This inevitably leads to an accumulation of volatile organic compounds (VOCs) that are emitted by e.g. building materials, paint and furniture. Human exposure to VOCs is directly related to the sick building syndrome leading to complaints such as headache, fatigue, dizziness and lack of concentration. In addition, exposure to VOCs is related to serious long-term health effects such as cancer or respiratory diseases. Therefore, significant research efforts are focused on advanced indoor air purification methods. Integration or retrofitting of a photocatalytic (PCO) air purifying unit into heating, ventilation and air conditioning (HVAC) equipment has been chosen as an interesting approach. As a starting point of this thesis, the operational conditions of a ventilation system were mapped. These systems are characterized by high flow rates and the necessity of minimal pressure losses. Pressure losses increase the energy demand and can lead to failure of the ventilation fan and thereby undermine the proper functioning of the ventilation system. A suitable substrate must allow the contaminated air to pass through with a minimal pressure drop, allow sufficient contact time between VOC and photocatalyst, have a large surface area available for coating with excellent adhesion, and be transparent to UV light. Therefore, the permeability and the available exposed surface were selected as main selection criteria. After a thorough quantitative analysis of potential substrates, borosilicate glass tubes were selected. Glass tubes can easily be stacked to constitute a transparent monolithic multi-tube reactor, with their length parallel to the air flow in order to minimize the pressure drop. Moreover, borosilicate glass is relatively inexpensive and has excellent UV-A light transmitting properties. Based on a literature study, a sol-gel coating procedure was selected that is extremely suitable for coating glass substrates. The next step was to optimize the amount of P25 (commercial titanium dioxide) in the photocatalytic sol-gel coating for its application. More P25 in the sol-gel coating results in a higher adsorption capacity and consequently a higher photocatalytic activity, but greatly reduces the transparency of the coating. After an in-depth study, the concentration of 10 g L-1 P25 was selected as the most feasible for multi-tube reactors. Since the operation of photocatalytic reactors is based on a complex interaction of physical and chemical processes, mathematical models were developed, supported by experimental data, that include all these phenomena as a tool for reactor design and optimization. By making use of such models, time-consuming and expensive experimental research can be minimized. However, the experimental validation of models is of utmost importance to prove its reliability and accuracy. Intrinsic kinetic parameters provide the fundamentals for these models as they describe the photocatalytic reaction rate, independent of fluid dynamics, reactor geometry and radiation field. In this work they were estimated by means of a Computational Fluid Dynamics (CFD) study, based on FTIR (Fourier-transform infrared spectroscopy) experiments with a lab scale multi-tube reactor. The kinetic parameters were validated by an alternative analytic approach, emphasizing the accuracy and reliability of the simulations. Finally, the aforementioned CFD approach, based on the simultaneously modelling of airflow, mass transfer, UV light irradiation and photocatalytic reactions, was used to obtain insights for the light source configuration in upscaled multi-tube reactors. After taking all these insights and some practical implications into account, a final upscaled multi-tube reactor design was proposed and converted into a first built prototype. Subsequently, it was evaluated according the CEN-EN-16486-1 standard for VOC removal by the external scientific research center ‘CERTECH’. The scientific results, regarding the mineralization of the VOCs and photocatalytic efficiency of the reactor, demonstrated the feasibility for indoor air purification by the upscaled multi-tube reactor and the possible implementation in ventilation systems. |
| Address |
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Series Issue |
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Edition |
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ISBN |
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Additional Links |
UA library record |
| Impact Factor |
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Times cited |
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Open Access |
|
| Notes |
|
Approved |
no |
| Call Number |
UA @ admin @ c:irua:160205 |
Serial |
7763 |
| Permanent link to this record |
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| |
| Author |
van Vaeck, L.; van Roy, W.; Struyf, H.; Poels, K.; Gijbels, R. |
| Title |
Laser microprobe mass spectrometry: local surface analysis of organic and inorganic compounds |
Type |
H3 Book chapter |
| Year |
1997 |
Publication |
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Abbreviated Journal |
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| Volume |
|
Issue |
|
Pages |
354-368 |
| Keywords |
H3 Book chapter; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT) |
| Abstract |
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| Address |
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| Corporate Author |
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Thesis |
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| Publisher |
Vch |
Place of Publication |
Weinheim |
Editor |
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| Language |
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Wos |
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Publication Date |
0000-00-00 |
| Series Editor |
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Series Title |
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Abbreviated Series Title |
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| Series Volume |
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Series Issue |
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Edition |
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| ISSN |
|
ISBN |
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Additional Links |
UA library record |
| Impact Factor |
|
Times cited |
|
Open Access |
|
| Notes |
|
Approved |
Most recent IF: NA |
| Call Number |
UA @ lucian @ c:irua:19343 |
Serial |
1795 |
| Permanent link to this record |
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| |
| Author |
van Vaeck, L.; van Roy, W.; Gijbels, R.; Adams, F. |
| Title |
Lasers in mass spectrometry: organic and inorganic instrumentation |
Type |
H3 Book chapter |
| Year |
1993 |
Publication |
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Abbreviated Journal |
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| Volume |
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Issue |
|
Pages |
7-126 |
| Keywords |
H3 Book chapter; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT) |
| Abstract |
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| Address |
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Thesis |
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| Publisher |
Wiley |
Place of Publication |
New York |
Editor |
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Wos |
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Publication Date |
0000-00-00 |
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Series Title |
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Abbreviated Series Title |
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Series Issue |
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Edition |
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ISBN |
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Additional Links |
UA library record |
| Impact Factor |
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Times cited |
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Open Access |
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| Notes |
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Approved |
no |
| Call Number |
UA @ lucian @ c:irua:6123 |
Serial |
1799 |
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| |
| Author |
van Vaeck, L.; van Roy, W.; Gijbels, R.; Adams, F. |
| Title |
Structural characterization of organic molecules by laser mass spectrometry |
Type |
H3 Book chapter |
| Year |
1993 |
Publication |
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Abbreviated Journal |
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| Volume |
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Issue |
|
Pages |
177-319 |
| Keywords |
H3 Book chapter; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT) |
| Abstract |
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Thesis |
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| Publisher |
Wiley |
Place of Publication |
New York |
Editor |
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Wos |
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Publication Date |
0000-00-00 |
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Series Title |
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Abbreviated Series Title |
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Series Issue |
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Edition |
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ISBN |
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Additional Links |
UA library record |
| Impact Factor |
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Times cited |
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Open Access |
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| Notes |
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Approved |
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| Call Number |
UA @ lucian @ c:irua:6124 |
Serial |
3222 |
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| |
| Author |
van Vaeck, L.; Gijbels, R. |
| Title |
Identification des substances inorganiques et organiques en surface des solides par la microsonde laser |
Type |
H3 Book chapter |
| Year |
1992 |
Publication |
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Abbreviated Journal |
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| Volume |
|
Issue |
|
Pages |
27-53 |
| Keywords |
H3 Book chapter; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT) |
| Abstract |
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| Address |
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| Corporate Author |
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Thesis |
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| Publisher |
Eyrolles |
Place of Publication |
Paris |
Editor |
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| Language |
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Wos |
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Publication Date |
0000-00-00 |
| Series Editor |
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Series Title |
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Abbreviated Series Title |
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| Series Volume |
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Series Issue |
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Edition |
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| ISSN |
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ISBN |
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Additional Links |
UA library record |
| Impact Factor |
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Times cited |
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Open Access |
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| Notes |
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Approved |
|
| Call Number |
UA @ lucian @ c:irua:4205 |
Serial |
1546 |
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| |
| Author |
Van Tendeloo, M. |
| Title |
Resource-efficient nitrogen removal from sewage : kinetic, physical and chemical tools for mainstream partial nitritation/anammox |
Type |
Doctoral thesis |
| Year |
2022 |
Publication |
|
Abbreviated Journal |
|
| Volume |
|
Issue |
|
Pages |
iv, 204 p. |
| Keywords |
Doctoral thesis; Engineering sciences. Technology; Sustainable Energy, Air and Water Technology (DuEL) |
| Abstract |
Adequate removal of pollutants from sewage is important to protect the environment and public health. Today, sewage treatment plants are operational in many parts of the world, and although the used technologies are effective in removing pollutants from wastewater, they are energy- and resource-intensive. Reshaping sewage treatment into a two-stage system, with separated organic carbon and nitrogen removal, facilitates the transformation towards energy-positive sewage treatment. This thesis will focus on resource-efficient nitrogen removal from sewage via partial nitritation/anammox (PN/A), with reduced organic carbon and oxygen consumption compared to conventional techniques. PN/A relies on the teamwork between two microbial groups to convert ammonium into nitrogen gas. Several other groups of microbes however can proliferate in the sludge, competing for substrate with the key players, lowering the nitrogen removal efficiency and increasing the energy demand. To obtain the desired microbial community, control tools should be applied to selectively promote the desired microbes while suppressing the unwanted competitors. In this thesis, multiple control tools were studied to establish a workable framework for successful implementation of PN/A in the main stream of a sewage treatment plant. These tools can be divided into three categories: i) kinetic tools, regulating substrate availability (e.g., oxygen availability control and residual ammonium concentration), ii) physical tools, revolving around sludge retention and selection (e.g., sludge age control and sludge aggregation form), and iii) chemical tools, exposing the sludge to stress conditions for which the unwanted microbes are vulnerable (e.g., sludge treatments with a single stressor such as free ammonia). The first research chapter focussed on oxygen availability control and single-stressor sludge treatments. The following two chapters covered the development of a novel multi-stressor concept combining substrate starvation and exposure to sulphide and free ammonia. In the final research chapter, the previously obtained knowledge was combined into a demonstration study on pilot-scale. The combination of these control tools was found effective in achieving nitrogen removal via PN/A, both on lab- and pilot-scale. Consequently, the obtained results in this thesis can catalyse the implementation of mainstream PN/A by providing a toolbox with multiple control tools and clever reactor design, thus advancing the concept of energy neutrality and resource efficiency in sewage treatment plants. |
| Address |
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Additional Links |
UA library record |
| Impact Factor |
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Times cited |
|
Open Access |
|
| Notes |
|
Approved |
Most recent IF: NA |
| Call Number |
UA @ admin @ c:irua:187665 |
Serial |
7204 |
| Permanent link to this record |
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| |
| Author |
Van Tendeloo, G.; van Landuyt, J.; Amelinckx, S. |
| Title |
Electron microscopy of fullerenes and fullerene related structures |
Type |
P3 Proceeding |
| Year |
1994 |
Publication |
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Abbreviated Journal |
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| Volume |
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Issue |
|
Pages |
498-513 |
| Keywords |
P3 Proceeding; Electron microscopy for materials research (EMAT) |
| Abstract |
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| Address |
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Thesis |
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| Publisher |
Electrochemical Society |
Place of Publication |
s.l. |
Editor |
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| Language |
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Wos |
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Publication Date |
0000-00-00 |
| Series Editor |
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Series Title |
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Abbreviated Series Title |
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Series Issue |
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Edition |
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ISBN |
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Additional Links |
UA library record |
| Impact Factor |
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Times cited |
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Open Access |
|
| Notes |
|
Approved |
no |
| Call Number |
UA @ lucian @ c:irua:10009 |
Serial |
960 |
| Permanent link to this record |
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| |
| Author |
Van Tendeloo, G.; Schryvers, D.; Tanner, L.E. |
| Title |
Structural instabilities associated with phase transitions: an electron microscopy study |
Type |
P3 Proceeding |
| Year |
1992 |
Publication |
|
Abbreviated Journal |
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| Volume |
|
Issue |
|
Pages |
107-113 |
| Keywords |
P3 Proceeding; Electron microscopy for materials research (EMAT) |
| Abstract |
|
| Address |
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| Corporate Author |
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Thesis |
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| Publisher |
Elsevier Applied Science |
Place of Publication |
London |
Editor |
|
| Language |
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Wos |
A1992BW88A00010 |
Publication Date |
0000-00-00 |
| Series Editor |
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Series Title |
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Abbreviated Series Title |
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| Series Volume |
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Series Issue |
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Edition |
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| ISSN |
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ISBN |
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Additional Links |
UA library record; WoS full record; |
| Impact Factor |
|
Times cited |
|
Open Access |
|
| Notes |
|
Approved |
|
| Call Number |
UA @ lucian @ c:irua:4447 |
Serial |
3238 |
| Permanent link to this record |
