Records |
Author |
Smekens, A.; Knupfer, M.; Berghmans, P.; Van Grieken, R. |
Title |
The elemental composition and microstructure of soot emitted by different sources |
Type |
A1 Journal article |
Year |
2000 |
Publication |
Journal of aerosol science |
Abbreviated Journal |
|
Volume |
31 |
Issue |
S1 |
Pages |
917-918 |
Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
Abstract |
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Publication Date |
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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 |
0021-8502; 1879-1964 |
ISBN |
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UA library record |
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Approved |
no |
Call Number |
UA @ admin @ c:irua:31647 |
Serial |
7887 |
Permanent link to this record |
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Author |
Rojas, C.M.; Van Grieken, R.; Maenhaut, W. |
Title |
Elemental composition of aircraft-sampled aerosols above the Southern Bight of the North Sea |
Type |
A1 Journal article |
Year |
1993 |
Publication |
Water, air and soil pollution |
Abbreviated Journal |
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Volume |
71 |
Issue |
|
Pages |
391-404 |
Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Wos |
A1993MT74000011 |
Publication Date |
2004-11-15 |
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 |
0049-6979; 1573-2932 |
ISBN |
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UA library record; WoS full record; WoS citing articles |
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Open Access |
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Approved |
no |
Call Number |
UA @ admin @ c:irua:6263 |
Serial |
7888 |
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Author |
Hellar-Kihampa, H.; Potgieter-Vermaak, S.; van Meel, K.; Gatto Rotondo, G.; Kishimba, M.; Van Grieken, R. |
Title |
Elemental composition of bottom-sediments from Pangani river basin, Tanzania : lithogenic and anthropogenic sources |
Type |
A1 Journal article |
Year |
2012 |
Publication |
Toxicological and environmental chemistry |
Abbreviated Journal |
|
Volume |
94 |
Issue |
3 |
Pages |
525-544 |
Keywords |
A1 Journal article; Pharmacology. Therapy; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
Abstract |
River-bed sediments from the Pangani basin, Tanzania, were characterized for elemental compositions, following contamination risks from rapid expansions of human activities in the area. Samples were collected during two individual seasons and analyzed by high-polarizing beam energy dispersive X-ray fluorescence (EDXRF) for eight major and 14 trace elements. Evaluation of enrichment factors (EFs) was used to investigate the elemental flux and assess the contributions of natural and anthropogenic influences. The abundances of the major elements followed the order Si > Al > Fe > Ca > K > Ti > Mn > P, similar to that of the upper earth's crust, and were generally from the weathering of the bed-rock. The high concentrations of typical anthropogenic trace-elements (Cr < 160 mg kg−1, V < 85 mg kg−1, Ni < 60 mg kg−1, Cu < 87 mg kg−1, La < 90 mg kg−1) coupled with high EFs (>2) in some locations indicated contamination associated with agricultural and industrial activities. Factor analysis extracted five principal components that contributed to 96.0% of the total observed variance. The results indicated that river-bed sediments of the Pangani basin were influenced to a larger extent by lithogenic sources than anthropogenic impacts. |
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Wos |
000304276100007 |
Publication Date |
2012-01-16 |
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 |
0277-2248 |
ISBN |
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UA library record; WoS full record; WoS citing articles |
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no |
Call Number |
UA @ admin @ c:irua:97080 |
Serial |
7889 |
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Author |
Eltayeb, M.A.H.; Injuk, J.; Maenhaut, W.; Van Grieken, R.E. |
Title |
Elemental composition of mineral aerosol generated from Sudan Sahara sand |
Type |
A1 Journal article |
Year |
2001 |
Publication |
Journal of atmospheric chemistry |
Abbreviated Journal |
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Volume |
40 |
Issue |
|
Pages |
247-273 |
Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
Abstract |
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Wos |
000171535300003 |
Publication Date |
2002-12-23 |
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 |
0167-7764 |
ISBN |
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Additional Links |
UA library record; WoS full record; WoS citing articles |
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Notes |
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Approved |
no |
Call Number |
UA @ admin @ c:irua:36088 |
Serial |
7890 |
Permanent link to this record |
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Author |
Silva, F.S.; Godoi, R.H.M.; Tauler, R.; de André, P.A.; Saldiva, P.H.N.; Van Grieken, R.; de Marchi, M.R.R. |
Title |
Elemental composition of PM2.5 in Araraquara City (Southeast Brazil) during seasons with and without sugar cane burning |
Type |
A2 Journal article |
Year |
2015 |
Publication |
Journal of environmental protection |
Abbreviated Journal |
|
Volume |
6 |
Issue |
5 |
Pages |
426-434 |
Keywords |
A2 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
Abstract |
Particulate matter with an aerodynamic diameter below 2.5 μm (PM2.5), present in polluted air, has been associated with a large spectrum of health impairments, mainly because of its deep deposition into the lungs. Araraquara City (Southeast Brazil) is surrounded by sugar-cane plantations, which are burned to facilitate the harvesting; this process causes environmental pollution due to the large amounts of soot that are released into the atmosphere. In this work, the elemental composition of PM2.5 was studied in two scenarios, namely in sugar-cane harvesting (HV) and in non-harvesting (NHV) seasons. The sampling strategy included one campaign in each season. PM2.5 was collected using a dichotomous sampler (10 L·min-1, 24 h) with PTFE filters. Information concerning the bulk elemental concentration was provided by energy-dispersive X-ray fluorescence. Enrichment factor analysis indicated that S, Cl, K, Cr, Ni, Cu, Zn, As, Cd and Pb were highly enriched relative to their crustal ratios (to Al). Principal component analysis was used to get some insight about the sources of the elements. Principal component 1 (PC1) explained 30.5% of data variance. The elements that had high loading (>0.7) were: S, Cr, As, and Pb; these are associated with combustion of fossil fuels. In principal component 2 (PC2), Cl, Cu, Zn, and Cd showed high loadings; these elements are associated with biomass burning. The Ni concentration found is three times larger than the threshold of risk for lung cancer, as recommended by the World Health Organization. |
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Wos |
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Publication Date |
2015-05-04 |
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 |
2152-2197 |
ISBN |
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UA library record |
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Approved |
no |
Call Number |
UA @ admin @ c:irua:125885 |
Serial |
7891 |
Permanent link to this record |
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Author |
van Alsenoy, V.; Bernard, P.; Van Grieken, R. |
Title |
Elemental concentrations and heavy metal pollution in sediments and suspended matter from the Belgian North Sea and the Scheldt estuary |
Type |
A1 Journal article |
Year |
1993 |
Publication |
The science of the total environment |
Abbreviated Journal |
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Volume |
133 |
Issue |
|
Pages |
153-181 |
Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
Abstract |
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Wos |
A1993LA92200010 |
Publication Date |
2003-09-12 |
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 |
0048-9697; 1879-1026 |
ISBN |
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Additional Links |
UA library record; WoS full record; WoS citing articles |
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Open Access |
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Notes |
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Approved |
no |
Call Number |
UA @ admin @ c:irua:6253 |
Serial |
7892 |
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Author |
van Meel, K.; Horemans, B.; Krata, A.; Bencs, L.; Buczyńska, A.J.; Dirtu, A.C.; Worobiec, A.; Van Grieken, R. |
Title |
Elemental concentrations in aerosols at the Belgian coast versus seasons and air mass trajectories |
Type |
A1 Journal article |
Year |
2010 |
Publication |
Environmental chemistry letters |
Abbreviated Journal |
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Volume |
8 |
Issue |
2 |
Pages |
157-163 |
Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation); Laboratory Experimental Medicine and Pediatrics (LEMP); Toxicological Centre |
Abstract |
Marine aerosols have extensively been monitored in the framework of a research project to investigate the inorganic and organic nutrient fluxes of the atmospheric nitrogen input into the North Sea. As a part of this project bulk analysis was also performed by energy dispersive X-ray fluorescence (EDXRF) on a total of 366 samples in order to provide detailed elemental composition. Samples have been clustered per campaign and differences were related to backward trajectories. Elements as Cl, Si, and S appeared to be the best tracers for coastal aerosols. Therefore they have been chosen to represent each campaign and to map the seasonal variations. It is clear that Cl is an excellent tracer for oceanic trajectories, while a less clear correlation between the soil dust components and the air mass trajectories is found. |
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Wos |
000277786900007 |
Publication Date |
2009-02-17 |
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 |
1610-3653 |
ISBN |
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Additional Links |
UA library record; WoS full record; WoS citing articles |
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Open Access |
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Notes |
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Approved |
no |
Call Number |
UA @ admin @ c:irua:82494 |
Serial |
7893 |
Permanent link to this record |
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Author |
Van Grieken, R.; Van 't dack, L.; Costa Dantas, C.; Moura de Amorim, W.; Maenhaut, W. |
Title |
Elemental constituents of atmospheric aerosols in Recife, North-East Brazil |
Type |
A3 Journal article |
Year |
1982 |
Publication |
Environmental pollution: series B : chemical and physical |
Abbreviated Journal |
|
Volume |
4 |
Issue |
2 |
Pages |
143-163 |
Keywords |
A3 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
Abstract |
Few data are available on the inorganic atmospheric pollution in the rapidly expanding cities of South America, like Recife, on the Atlantic Coast of North-east Brazil. Therefore, the elemental composition of atmospheric aerosols was investigated for nine sites in the Recife conurbation and a fairly remote site in the area. Total aerosol samples were collected on cellulose filters for analysis by energy dispersive X-ray fluorescence and cascade impactors were used to collect the aerosols as a function of particle size for subsequent analysis by proton-induced X-ray emission. Local soil aliquots were also analysed. About eighteen elements were quantified in all cases. The average total atmospheric concentrations appeared to be well above natural levels but usually lower than, or comparable with, those of North American and European cities. Dispersal of sea spray and of local soil (often contaminated with, for example, Cu, Zn and Pb from industrial sources) contributes predominantly to the total atmospheric load in Recife. However, the particle size fraction results also indicated strong excesses in the small particle mode for S, K, V, Mn, Ni, Cu, Zn, Br and Pb, mainly in the downtown area. Again, the corresponding enrichment factors were only moderate in comparison with other published urban data. |
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Wos |
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Publication Date |
2003-09-11 |
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 |
0143-148x; 1878-0695 |
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:111437 |
Serial |
7894 |
Permanent link to this record |
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Author |
Johansson, T.B.; Van Grieken, R.E.; Nelson, J.W.; Winchester, J.W. |
Title |
Elemental trace analysis of small samples by proton-induced X-ray-emission |
Type |
A1 Journal article |
Year |
1975 |
Publication |
Analytical chemistry |
Abbreviated Journal |
|
Volume |
47 |
Issue |
6 |
Pages |
855-860 |
Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
Abstract |
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Wos |
A1975AA02900016 |
Publication Date |
2005-03-08 |
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 |
0003-2700; 5206-882x |
ISBN |
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Additional Links |
UA library record; WoS full record; WoS citing articles |
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Times cited |
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Open Access |
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Approved |
no |
Call Number |
UA @ admin @ c:irua:113638 |
Serial |
7895 |
Permanent link to this record |
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Author |
Tsuji, K.; Nullens, R.; Wagatsuma, K.; Van Grieken, R.E. |
Title |
Elemental x-ray images obtained by grazing-exit electron probe microanalysis (GE-EPMA) |
Type |
A1 Journal article |
Year |
1999 |
Publication |
Journal of analytical atomic spectrometry |
Abbreviated Journal |
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Volume |
14 |
Issue |
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Pages |
1711-1713 |
Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
Abstract |
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Wos |
000083208000009 |
Publication Date |
2002-07-26 |
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 |
0267-9477 |
ISBN |
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Additional Links |
UA library record; WoS full record; WoS citing articles |
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Open Access |
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Notes |
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Approved |
no |
Call Number |
UA @ admin @ c:irua:34103 |
Serial |
7896 |
Permanent link to this record |
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Author |
Treiger, B.; Bondarenko, I.; van Malderen, H.; Van Grieken, R. |
Title |
Elucidating the composition of atmospheric aerosols through the combined hierarchical, non-hierarchical and fuzzy clustering of large electron probe microanalysis data sets |
Type |
A1 Journal article |
Year |
1995 |
Publication |
Analytica chimica acta |
Abbreviated Journal |
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Volume |
317 |
Issue |
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Pages |
33-51 |
Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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Wos |
A1995TP42200003 |
Publication Date |
2003-04-23 |
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 |
0003-2670; 1873-4324 |
ISBN |
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Additional Links |
UA library record; WoS full record; WoS citing articles |
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Approved |
no |
Call Number |
UA @ admin @ c:irua:12355 |
Serial |
7897 |
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Author |
Verbueken, A.H.; Van Grieken, R.E.; Paulus, G.J.; De Bruijn, W.C. |
Title |
Embedded ion exchange beads as standards for laser microprobe mass analysis of biological specimens |
Type |
A1 Journal article |
Year |
1984 |
Publication |
Analytical chemistry |
Abbreviated Journal |
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Volume |
56 |
Issue |
8 |
Pages |
1362-1370 |
Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
Abstract |
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Wos |
A1984SX51800045 |
Publication Date |
2005-03-08 |
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 |
0003-2700; 5206-882x |
ISBN |
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Additional Links |
UA library record; WoS full record; WoS citing articles |
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Times cited |
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Open Access |
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Approved |
no |
Call Number |
UA @ admin @ c:irua:116520 |
Serial |
7898 |
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Author |
Vargas Paredes, A.A. |
Title |
Emergent phenomena in superconductors in presence of intraband and cross-band pairing |
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 |
142 p. |
Keywords |
Doctoral thesis; Condensed Matter Theory (CMT) |
Abstract |
In this thesis we investigate the emergence of new phenomena in multigap superconductors and multicomponent Ginzburg-Landau theories in the presence of intraband and cross-band pairing. The first part contains a review of emergent phenomena in superconductors with only intraband pairing, in particular the mechanism behind gap resonances which are accompanied by Higgs and Leggett modes. Then we study the gap resonances induced by two-dimensional quantum confinement and describe its spatial profile using the Bogoliubov-de Gennes equations. In the second part we describe the conditions where the cross-band pair formation is feasible. Using the formalism of Green functions we obtain the equations governing the interplay between intraband and cross-band pairing. Also, we derived the Ginzburg-Landau equations considering both intraband and cross-band pairing. Finally, we describe the crossover between the intraband-dominated and crossband-dominated regimes. These two are delimited by a tendency towards a gapless state. When a magnetic field is applied close to the gapless state, we found new arrangements of vortices like square lattices, stripes, labyrinths or of vortex clusters. The experimental signatures and consequences of crosspairing are discussed for MgB2 and Ba0.6K0.4Fe2As2. |
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Approved |
Most recent IF: NA |
Call Number |
UA @ admin @ c:irua:165865 |
Serial |
7899 |
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Author |
Courtens, E.N.P.; Vandekerckhove, T.; Prat, D.; Vilchez-Vargas, R.; Vital, M.; Pieper, D.H.; Meerbergen, K.; Lievens, B.; Boon, N.; Vlaeminck, S.E. |
Title |
Empowering a mesophilic inoculum for thermophilic nitrification : growth mode and temperature pattern as critical proliferation factors for archaeal ammonia oxidizers |
Type |
A1 Journal article |
Year |
2016 |
Publication |
Water research |
Abbreviated Journal |
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Volume |
92 |
Issue |
|
Pages |
94-103 |
Keywords |
A1 Journal article; Engineering sciences. Technology; Sustainable Energy, Air and Water Technology (DuEL) |
Abstract |
Cost-efficient biological treatment of warm nitrogenous wastewaters requires the development of thermophilic nitrogen removal processes. Only one thermophilic nitrifying bioreactor was described so far, achieving 200 mg N L-1 d-1 after more than 300 days of enrichment from compost samples. From the practical point of view in which existing plants would be upgraded, however, a more time-efficient development strategy based on mesophilic nitrifying sludge is preferred. This study evaluated the adaptive capacities of mesophilic nitrifying sludge for two linear temperature increase patterns (non-oscillating vs. oscillating), two different slopes (0.25 vs. 0.08 °C d-1) and two different reactor types (floc vs. biofilm growth). The oscillating temperature pattern (0.25 °C d-1) and the moving bed biofilm reactor (0.08 °C d-1) could not reach nitrification at temperatures higher than 46°C. However, nitrification rates up to 800 mg N L-1 d-1 and 150 mg N g-1 volatile suspended solids d-1 were achieved at a temperature as high as 49°C by imposing the slowest linear temperature increase to floccular sludge. Microbial community analysis revealed that this successful transition was related with a shift in ammonium oxidizing archaea dominating ammonia oxidizing bacteria, while for nitrite oxidation Nitrospira spp. was constantly more abundant than Nitrobacter spp.. This observation was accompanied with an increase in observed sludge yield and a shift in maximal optimum temperature, determined with ex-situ temperature sensitivity measurements, predicting an upcoming reactor failure at higher temperature. Overall, this study achieved nitrification at 49°C within 150 days by gradual adaptation of mesophilic sludge, and showed that ex-situ temperature sensitivity screening can be used to monitor and steer the transition process. |
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Wos |
000371555200011 |
Publication Date |
2016-01-14 |
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 |
0043-1354; 1879-2448 |
ISBN |
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UA library record; WoS full record; WoS citing articles |
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Approved |
no |
Call Number |
UA @ admin @ c:irua:130444 |
Serial |
7900 |
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Author |
Seuntjens, D.; Carvajal Arroyo, J.M.; Molina, J.; Boon, N.; Vlaeminck, S.E. |
Title |
Enabling partial nitritation/anammox on pre-treated sewage with IFAS : aeration and floc SRT control strategies limit nitrate production |
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 - 5th IWA Benelux Young Water Professional |
Keywords |
P3 Proceeding; Engineering sciences. Technology; Sustainable Energy, Air and Water Technology (DuEL) |
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UA @ admin @ c:irua:151116 |
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7901 |
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Author |
Saiz-Jimenez, C.; Garcia-Rowe, J.; Garcia Del Cura, M.A.; Ortega-Camvo, J.J.; Roekens, E.; Van Grieken, R. |
Title |
Endolithic cyanobacteria in Maastricht limestone |
Type |
A1 Journal article |
Year |
1990 |
Publication |
The science of the total environment |
Abbreviated Journal |
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Volume |
94 |
Issue |
3 |
Pages |
209-220 |
Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
Abstract |
The Maastricht limestone used for the construction of the 14th century O.L. Basilica in Tongeren, Belgium, is a light yellowish, porous, soft rock of the Late Cretaceous age. The limestone has a high carbonate content (> 95%); quartz and glauconite occur rarely. On the north side of the building, there is extensive growth of epilithic algae. On the south side, an assemblage of organisms was observed beneath the abiotic surface. This community, developed as a green layer 1 mm below the surface, is dominated by cyanobacteria. A moss was also present. The organisms were studied by transmitted light, phase contrast and scanning electron microscopy, and isolated in cultures. The cyanobacteria belong to the genera Synechococcus and Chroococcidiopsis, and the moss was identified as Tortula muralis Hedw. The organic matter present in the green layer was characterized in terms of molecular components using analytical pyrolysis. Pyrolysis products from polysaccharides and proteins, and evaporation/pyrolysis products from lipids, comprise the vast majority of identified compounds. The identification of specific biomarkers such as 7-methylheptadecane is further evidence of the presence of cyanobacteria. Phytenes and phytadienes are indicative of phototrophic organisms, as they are pyrolysis products from chlorophylls. |
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A1990DF51800004 |
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2003-09-12 |
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0048-9697; 1879-1026 |
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UA @ admin @ c:irua:116654 |
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7902 |
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Author |
Muia, L.M.; Van Grieken, R. |
Title |
Energy-dispersive X-ray fluorescence analysis of geological materials in borax beads using Tertian's binary coefficient approach combined with internal standard addition |
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A1 Journal article |
Year |
1991 |
Publication |
X-ray spectrometry |
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Volume |
20 |
Issue |
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Pages |
179-183 |
Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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0049-8246 |
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UA @ admin @ c:irua:662 |
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7903 |
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Van Grieken, R.; Robberecht, H.; Shani, J.; Van Dyck, P.; Vos, L. |
Title |
Energy-dispersive X-ray fluorescence for direct trace analysis of biomedical and environmental samples |
Type |
H3 Book chapter |
Year |
1982 |
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159-178
T2 - X-ray fluorescence (XRF and PIXE) in |
Keywords |
H3 Book chapter; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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UA @ admin @ c:irua:117485 |
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7904 |
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Vanderborght, B.; Van Grieken, R. |
Title |
Energy-dispersive X-ray fluorescence for trace metals analysis of water |
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H3 Book chapter |
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1975 |
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1-9
T2 - Nuclear techniques in environmental resea |
Keywords |
H3 Book chapter; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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UA @ admin @ c:irua:117461 |
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7905 |
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Author |
Civici, N.; Van Grieken, R. |
Title |
Energy-dispersive X-ray fluorescence in geochemical mapping |
Type |
A1 Journal article |
Year |
1997 |
Publication |
X-ray spectrometry |
Abbreviated Journal |
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Volume |
26 |
Issue |
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Pages |
147-152 |
Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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A1997XM14500003 |
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2002-08-25 |
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0049-8246 |
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UA @ admin @ c:irua:18782 |
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7906 |
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Van Grieken, R.; Markowicz, A.; Török, S. |
Title |
Energy-dispersive X-ray spectrometry : present state and trends |
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A3 Journal article |
Year |
1986 |
Publication |
Fresenius' Zeitschrift für analytische Chemie |
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Volume |
324 |
Issue |
8 |
Pages |
825-831 |
Keywords |
A3 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
Abstract |
Recent development, present state and expected future developments in energy-dispersive X-ray spectrometry are discussed. Attention is paid to the improvements in analytical selectivity, sensitivity, detection limit, quantitative character and applicability range, which are the result of new or better excitation sources, detectors, instrument design, automation, computer software and theoretical developments. |
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2004-11-15 |
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0016-1152 |
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UA @ admin @ c:irua:116642 |
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7907 |
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Seuntjens, D.; Bundervoet, B.L.M.; Mollen, H.; De Mulder, C.; Wypkema, E.; Verliefde, A.; Nopens, I.; Colsen, J.G.M.; Vlaeminck, S.E. |
Title |
Energy efficient treatment of A-stage effluent : pilot-scale experiences with short-cut nitrogen removal |
Type |
A1 Journal article |
Year |
2016 |
Publication |
Water science and technology |
Abbreviated Journal |
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Volume |
73 |
Issue |
9 |
Pages |
2150-2158 |
Keywords |
A1 Journal article; Engineering sciences. Technology; Sustainable Energy, Air and Water Technology (DuEL) |
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000376285300013 |
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2016-02-09 |
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0273-1223; 1996-9732 |
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Call Number |
UA @ admin @ c:irua:130442 |
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7908 |
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Seuntjens, D.; Bundervoet, B.L.M.; Mollen, H.; De Mulder, C.; Wypkema, E.; Verliefde, A.; Nopens, I.; Colsen, J.G.M.; Vlaeminck, S.E. |
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Energy efficient treatment of A-stage effluent : pilot-scale experiences with short-cut nitrogen removal |
Type |
P3 Proceeding |
Year |
2015 |
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10 p.
T2 - IWA Nutrient Removal and Recovery 2015: |
Keywords |
P3 Proceeding; Engineering sciences. Technology; Sustainable Energy, Air and Water Technology (DuEL) |
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Call Number |
UA @ admin @ c:irua:151146 |
Serial |
7909 |
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Author |
Ma, J.; Duong, T.H.; Smits, M.; Verstraete, W.; Carballa, M. |
Title |
Enhanced biomethanation of kitchen waste by different pre-treatments |
Type |
A1 Journal article |
Year |
2011 |
Publication |
Bioresource technology |
Abbreviated Journal |
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Volume |
102 |
Issue |
2 |
Pages |
592-599 |
Keywords |
A1 Journal article; Engineering sciences. Technology; Sustainable Energy, Air and Water Technology (DuEL) |
Abstract |
Five different pre-treatments were investigated to enhance the solubilisation and anaerobic biodegradability of kitchen waste (
KW) in thermophilic batch and continuous tests. In the batch solubilisation tests, the highest and the lowest solubilisation efficiency were achieved with the thermo-acid and the pressuredepressure pre-treatments, respectively. However, in the batch biodegradability tests, the highest cumulative biogas production was obtained with the pressuredepressure method. In the continuous tests, the best performance in terms of an acceptable biogas production efficiency of 60% and stable in-reactor CODs and VFA concentrations corresponded to the pressuredepressure reactor, followed by freezethaw, acid, thermo-acid, thermo and control. The maximum OLR (5 g COD L−1 d−1) applied in the pressuredepressure and freezethaw reactors almost doubled the control reactor. From the overall analysis, the freezethaw pre-treatment was the most profitable process with a net potential profit of around 11.5 ton−1 KW. |
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000286782700022 |
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2010-08-12 |
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0960-8524 |
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Call Number |
UA @ admin @ c:irua:85249 |
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7910 |
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Author |
Yang, Z.; Zhu, W.; Yu, D.; Bo, Y.; Li, J. |
Title |
Enhanced carbon and nitrogen removal performance of simultaneous anammox and denitrification (SAD) with mannitol addition treating saline wastewater |
Type |
A1 Journal article |
Year |
2019 |
Publication |
Journal of chemical technology and biotechnology |
Abbreviated Journal |
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Volume |
94 |
Issue |
2 |
Pages |
377-388 |
Keywords |
A1 Journal article; Engineering sciences. Technology; Sustainable Energy, Air and Water Technology (DuEL) |
Abstract |
BACKGROUND Simultaneous anammox and denitrification (SAD) can remove carbon and nitrogen. However, its performance is suppressed under saline surroundings. In this work, mannitol was used to enhance a SAD process treating saline wastewater. RESULTS The optimum carbon and nitrogen removal was achieved at 0.2 mmol L-1 mannitol, during which ammonium removal efficiency (ARE), nitrite removal efficiency (NRE) and chemical oxygen demand (COD) removal efficiency were 96.95%, 93.70% and 90.05%, respectively. The maximum ammonium removal rate (ARR), nitrite removal rate (NRR) and the specific anammox activity (SAA) were increased by 25.49%, 55.84% and 33.83% with optimum addition (0.2 mmol L-1 mannitol) respectively. The diameter of sludge was enlarged with the addition of mannitol (<= 0.2 mmol L-1). The Tseng-Wayman model was more suitable to simulate the whole SAD process. The modified logistic model, the modified Boltzman model and the modified Gompertz model were all appropriate to describe nitrogen removal in a typical cycle with the addition of mannitol. CONCLUSION Mannitol was effective in enhancing a SAD process treating saline wastewater, and maximum nitrogen removal was achieved at mannitol = 0.2 mmol L-1. The Tseng-Wayman model satisfactorily predicted the whole SAD process treating saline wastewater with mannitol addition. (c) 2018 Society of Chemical Industry |
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000455262100004 |
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2018-07-26 |
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0268-2575; 1097-4660 |
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no |
Call Number |
UA @ admin @ c:irua:156712 |
Serial |
7911 |
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Author |
Van Dyck, P.M.; Török, S.B.; Van Grieken, R.E. |
Title |
Enhancement effect in X-ray fluorescence analysis of environmental samples of medium thickness |
Type |
A1 Journal article |
Year |
1986 |
Publication |
Analytical chemistry |
Abbreviated Journal |
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Volume |
58 |
Issue |
8 |
Pages |
1761-1766 |
Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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A1986C955500040 |
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2005-03-08 |
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0003-2700; 5206-882x |
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Call Number |
UA @ admin @ c:irua:116522 |
Serial |
7915 |
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Author |
Sui, Y.; Muys, M.; Van de Waal, D.; D'Adamo, S.; Vermeir, P.; Fernandes, T.V.; Vlaeminck, S.E. |
Title |
Enhancement of co-production of nutritional protein and carotenoids in Dunaliella salina using a two-phase cultivation assisted by nitrogen level and light intensity |
Type |
A1 Journal article |
Year |
2019 |
Publication |
Bioresource technology |
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Volume |
287 |
Issue |
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Pages |
121398 |
Keywords |
A1 Journal article; Engineering sciences. Technology; Sustainable Energy, Air and Water Technology (DuEL) |
Abstract |
Microalga Dunaliella salina is known for its carotenogenesis. At the same time, it can also produce high-quality protein. The optimal conditions for D. salina to co-produce intracellular pools of both compounds, however, are yet unknown. This study investigated a two-phase cultivation strategy to optimize combined high-quality protein and carotenoid production of D. salina. In phase-one, a gradient of nitrogen concentrations was tested. In phase-two, effects of nitrogen pulse and high illumination were tested. Results reveal optimized protein quantity, quality (expressed as essential amino acid index EAAI) and carotenoids content in a two-phase cultivation, where short nitrogen starvation in phase-one was followed by high illumination during phase-two. Adopting this strategy, productivities of protein, EAA and carotenoids reached 22, 7 and 3 mg/L/d, respectively, with an EAAI of 1.1. The quality of this biomass surpasses FAO/WHO standard for human nutrition, and the observed level of β-carotene presents high antioxidant pro-vitamin A activity. |
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000469414500008 |
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2019-04-30 |
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0960-8524 |
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Call Number |
UA @ admin @ c:irua:159661 |
Serial |
7916 |
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Author |
Tsuji, K.; Spolnik, Z.; Wagatsuma, K.; Zhang, J.; Van Grieken, R.E. |
Title |
Enhancement of electron-induced X-ray intensity for single particles under grazing-exit conditions |
Type |
A1 Journal article |
Year |
1999 |
Publication |
Spectrochimica acta: part B : atomic spectroscopy |
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Volume |
54 |
Issue |
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Pages |
1243-1251 |
Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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000082048700010 |
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2002-07-26 |
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0584-8547; 1873-3565 |
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Call Number |
UA @ admin @ c:irua:27583 |
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7917 |
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Tsuji, K.; Takenaka, H.; Wagatsuma, K.; de Bokx, P.K.; Van Grieken, R.E. |
Title |
Enhancement of X-ray fluorescence intensity from an ultra-thin sandwiched layer at grazing-emission angles |
Type |
A1 Journal article |
Year |
1999 |
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Spectrochimica acta: part B : atomic spectroscopy |
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54 |
Issue |
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Pages |
1881-1888 |
Keywords |
A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) |
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000084169300013 |
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2002-07-26 |
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0584-8547; 1873-3565 |
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Call Number |
UA @ admin @ c:irua:27585 |
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7918 |
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Peng, L.; Liu, Y.; Sun, J.; Wang, D.; Dai, X.; Ni, B.-J. |
Title |
Enhancing immobilization of arsenic in groundwater: A model-based evaluation |
Type |
A1 Journal article |
Year |
2017 |
Publication |
Journal of cleaner production |
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Volume |
166 |
Issue |
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Pages |
449-457 |
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A1 Journal article; Engineering sciences. Technology; Sustainable Energy, Air and Water Technology (DuEL) |
Abstract |
The mobilization of arsenic (As) in aquatic environment (groundwater) can cause severe environmental and healthy issues. To develop remediation strategies, we proposed a comprehensive mathematical model to describe the As removal in a arsenite (As (III)) oxidizing and ferrous iron (Fe (II)) oxidizing denitrifying granular biofilm system. In the model framework, the growth-linked microbial oxidation of As (III) and Fe (II) was coupled to chemolithotrophic denitrification of one-step reduction of nitrate to nitrogen gas. Meanwhile, the precipitation of ferric iron (Fe (III)) and adsorption of arsenate (As (V)) onto the biogenic Fe (III) (hydr)oxides were also considered. The model was calibrated by comparing the model predictions against experimental data from batch experiments. The validity of the model was further demonstrated through testing against long-term experimental results from five independent bioreactors with different reactor configurations and operational conditions. Modeling results revealed that the granule size would exert a limited impact on arsenic and iron removal. Nevertheless, their removal efficiencies increased rapidly with the increase of hydraulic retention time (HRT) from 1 h to 12 h, but became independent of HRT as it further increased. The established model framework enables interpretation of a range of experimental observations on As and Fe removal and helps to identify the optimal conditions for enhanced arsenic remediation. (C) 2017 Elsevier Ltd. All rights reserved. |
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Wos |
000412607100046 |
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2017-08-09 |
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0959-6526 |
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UA library record; WoS full record; WoS citing articles |
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Open Access |
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UA @ admin @ c:irua:146635 |
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7919 |
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