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Author |
Seuntjens, D.; Carvajal Arroyo, J.M.; Van Tendeloo, M.; Chatzigiannidou, I.; Molina, J.; Nop, S.; Boon, N.; Vlaeminck, S.E. |
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Title |
Mainstream partial nitritation/anammox with integrated fixed-film activated sludge : combined aeration and floc retention time control strategies limit nitrate production |
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A1 Journal article |
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Year |
2020 |
Publication |
Bioresource Technology |
Abbreviated Journal |
Bioresource Technol |
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Volume |
314 |
Issue |
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Pages |
123711-10 |
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Keywords |
A1 Journal article; Engineering sciences. Technology; Sustainable Energy, Air and Water Technology (DuEL) |
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Abstract |
Implementation of mainstream partial nitritation/anammox (PN/A) can lead to more sustainable and cost-effective sewage treatment. For mainstream PN/A reactor, an integrated fixed-film activated sludge (IFAS) was operated (26 °C). The effects of floccular aerobic sludge retention time (AerSRT_floc), a novel aeration strategy, and N-loading rate were tested to optimize the operational strategy. The best performance was observed with a low, but sufficient AerSRTfloc (~7d) and continuous aeration with two alternating dissolved oxygen setpoints: 10 min at 0.07–0.13 mg O2 L−1 and 5 min at 0.27–0.43 mg O2 L−1. Nitrogen removal rates were 122 ± 23 mg N L−1 d−1, and removal efficiencies 73 ± 13%. These conditions enabled flocs to act as nitrite sources while the carriers were nitrite sinks, with low abundance of nitrite oxidizing bacteria. The operational strategies in the source-sink framework can serve as a guideline for successful operation of mainstream PN/A reactors. |
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Wos |
000558601200004 |
Publication Date |
2020-06-24 |
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ISSN |
0960-8524 |
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Additional Links |
UA library record; WoS full record; WoS citing articles |
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Impact Factor |
11.4 |
Times cited  |
3 |
Open Access |
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Notes |
; D.S. was supported by a Ph.D. grant from the Institute for the Promotion of Innovation by Science and Technology in Flanders (IWTVlaanderen, SB-131769). M.V.T. was supported by a Ph.D. SB Fellowship from the Research Foundation -Flanders (FWO-Vlaanderen, 1S03218N). ; |
Approved |
Most recent IF: 11.4; 2020 IF: 5.651 |
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Call Number |
UA @ admin @ c:irua:170054 |
Serial |
6559 |
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Author |
Thomassen, G.; Van Dael, M.; Van Passel, S. |
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Title |
The potential of microalgae biorefineries in Belgium and India : an environmental techno-economic assessment |
Type |
A1 Journal article |
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Year |
2018 |
Publication |
Bioresource Technology |
Abbreviated Journal |
Bioresource Technol |
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Volume |
267 |
Issue |
267 |
Pages |
271-280 |
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Keywords |
A1 Journal article; Engineering sciences. Technology; Engineering Management (ENM) |
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Abstract |
This study performs an environmental techno-economic assessment (ETEA) for multiple microalgae biorefinery concepts at different locations, those being Belgium and India. The ETEA methodology, which integrates aspects of the TEA and LCA methodologies and provides a clear framework for an integrated assessment model, has been proposed and discussed. The scenario in India has a higher profitability with a NPV of (sic)40 million over a period of 10 years, while the environmental impact in Belgium is lower. The inclusion of a medium recycling step provides the best scenario from both perspectives. The crucial parameters for feasibility are the beta-caroteneprice and content, the upstream environmental impact of electricity and the maximum biomass concentration during cultivation. The identification of these parameters by the ETEA guides future technology developments and shortens the time-to-market for microalgal-based biorefineries. |
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Wos |
000441876100034 |
Publication Date |
2018-07-10 |
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ISSN |
0960-8524 |
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Additional Links |
UA library record; WoS full record; WoS citing articles; WoS full record; WoS citing articles |
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Impact Factor |
5.651 |
Times cited |
8 |
Open Access |
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Notes |
; ; |
Approved |
Most recent IF: 5.651 |
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Call Number |
UA @ admin @ c:irua:153599 |
Serial |
6270 |
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