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Author |
Meerburg, F.A.; Boon, N.; Van Winckel, T.; Pauwels, K.T.G.; Vlaeminck, S.E. |
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Title |
Live Fast, Die Young: Optimizing Retention Times in High-Rate Contact Stabilization for Maximal Recovery of Organics from Wastewater |
Type |
A1 Journal article |
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Year  |
2016 |
Publication |
Environmental science and technology |
Abbreviated Journal |
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Volume |
50 |
Issue |
17 |
Pages |
9781-9790 |
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Keywords |
A1 Journal article; Sustainable Energy, Air and Water Technology (DuEL) |
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Abstract |
Wastewater is typically treated by the conventional activated sludge process, which suffers from an inefficient overall energy balance. The high-rate contact stabilization (HiCS) has been proposed as a promising primary treatment technology with which to maximize redirection of organics to sludge for subsequent energy recovery. It utilizes a feast famine cycle to select for bioflocculation, intracellular storage, or both. We optimized the HiCS process for organics recovery and characterized different biological pathways of organics removal and recovery. A total of eight HiCS reactors were operated at 15 degrees C at short solids retention times (SRT; 0.24-2.8 days), hydraulic contact times (t(c); 8 and 15 min), and stabilization times (t(s); 15 and 40 min). At an optimal SRT between 0.5 and 1.3 days and t(c) of 15 min and t(s) of 40 min, the HiCS system oxidized only 10% of influent chemical oxygen demand (COD) and recovered up to 55% of incoming organic matter into sludge. Storage played a minor role in the overall COD removal, which was likely dominated by aerobic biomass growth, bioflocculation onto extracellular polymeric substances, and settling. The HiCS process recovers enough organics to potentially produce 28 kWh of electricity per population equivalent per year by anaerobic digestion and electricity generation. This inspires new possibilities for energy-neutral wastewater treatment. |
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000382805800097 |
Publication Date |
2016-08-02 |
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0013-936x; 1520-5851 |
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no |
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Call Number |
UA @ admin @ c:irua:138270 |
Serial |
8176 |
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Author |
Seuntjens, D.; Meerburg, F.A.; Vlaeminck, S.E.; Roume, H.; Pieper, D.H.; Jauregui, R.; Vilchez-Vargas, R.; Boon, N. |
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Title |
Microbial ecology of high-rate versus conventional activated sludge : environmental and operational parameters shape microbial structure, co-occurrence and functionality |
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P3 Proceeding |
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Year |
2016 |
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Pages |
4 p.
T2 - WEF/IWA Nutrient Removal and Recovery Co |
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Keywords |
P3 Proceeding; Engineering sciences. Technology; Sustainable Energy, Air and Water Technology (DuEL) |
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no |
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Call Number |
UA @ admin @ c:irua:151127 |
Serial |
8241 |
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Coppens, J.; Lindeboom, R.; Muys, M.; Coessens, W.; Alloul, A.; Meerbergen, K.; Lievens, B.; Clauwaert, P.; Boon, N.; Vlaeminck, S.E. |
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Title |
Nitrification and microalgae cultivation for two-stage biological nutrient valorization from source separated urine |
Type |
A1 Journal article |
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Year |
2016 |
Publication |
Bioresource technology |
Abbreviated Journal |
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Volume |
211 |
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Pages |
41-50 |
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Keywords |
A1 Journal article; Engineering sciences. Technology; Sustainable Energy, Air and Water Technology (DuEL) |
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Abstract |
Urine contains the majority of nutrients in urban wastewaters and is an ideal nutrient recovery target. In this study, stabilization of real undiluted urine through nitrification and subsequent microalgae cultivation were explored as strategy for biological nutrient recovery. A nitrifying inoculum screening revealed a commercial aquaculture inoculum to have the highest halotolerance. This inoculum was compared with municipal activated sludge for the start-up of two nitrification membrane bioreactors. Complete nitrification of undiluted urine was achieved in both systems at a conductivity of 75 mS cm−1 and loading rate above 450 mg N L−1 d−1. The halotolerant inoculum shortened the start-up time with 54%. Nitrite oxidizers showed faster salt adaptation and Nitrobacter spp. became the dominant nitrite oxidizers. Nitrified urine as growth medium for Arthrospira platensis demonstrated superior growth compared to untreated urine and resulted in a high protein content of 62%. This two-stage strategy is therefore a promising approach for biological nutrient recovery. |
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000375186700006 |
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2016-03-06 |
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ISSN |
0960-8524 |
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UA library record; WoS full record; WoS citing articles |
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no |
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Call Number |
UA @ admin @ c:irua:139913 |
Serial |
8307 |
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Author |
Vandekerckhove, T.G.L.; Courtens, E.N.P.; Prat, D.; Boon, N.; Vlaeminck, S.E. |
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Title |
The rise of thermophilic biotechnology for nitrogen removal |
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P3 Proceeding |
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Year |
2016 |
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Abbreviated Journal |
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17 p.
T2 - WEF/IWA Nutrient Removal and Recovery C |
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Keywords |
P3 Proceeding; Engineering sciences. Technology; Sustainable Energy, Air and Water Technology (DuEL) |
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Call Number |
UA @ admin @ c:irua:151125 |
Serial |
8481 |
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Author |
Grunert, O.; Robles Aguilar, A.A.; Hernandez-Sanabria, E.; Vandekerckhove, T.; Reheul, D.; Van Labeke, M.-C.; Vlaeminck, S.; Boon, N.; Jablonowski, N.D. |
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Title |
Struvite and organic fertilizer impacting the rhizosphere microbial community, nutrient turnover and plant growth performance |
Type |
P3 Proceeding |
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Year |
2016 |
Publication |
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Abbreviated Journal |
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Volume |
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Pages |
12 p.
T2 - WEF/IWA Nutrient Removal and Recovery C |
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Keywords |
P3 Proceeding; Engineering sciences. Technology; Sustainable Energy, Air and Water Technology (DuEL) |
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Call Number |
UA @ admin @ c:irua:151135 |
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8589 |
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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. |
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Title |
Transitioning from mesophilic to thermophilic nitrification: shaping a niche for archaeal ammonia oxidizers |
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P3 Proceeding |
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Year |
2016 |
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Pages |
9 p.
T2 - WEF/IWA Nutrient Removal and Recovery Co |
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Keywords |
P3 Proceeding; Engineering sciences. Technology; Sustainable Energy, Air and Water Technology (DuEL) |
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Call Number |
UA @ admin @ c:irua:151126 |
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8697 |
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Author |
Meerburg, F.A.; Boon, N.; Van Winckel, T.; Pauwels, K.; Vlaeminck, S.E. |
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Title |
The age of wastewater mining : selection for sludge with a maximum capture potential for organics in a high-rate contact stabilization system |
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P3 Proceeding |
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2015 |
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3 p.
T2 - IWA Resource Recovery Conference, 30 Aug |
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P3 Proceeding; Engineering sciences. Technology; Sustainable Energy, Air and Water Technology (DuEL) |
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Call Number |
UA @ admin @ c:irua:151144 |
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7428 |
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Author |
Coppens, J.; Meers, E.; Boon, N.; Buysse, J.; Vlaeminck, S.E. |
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Title |
The nitrogen and phosphorus budget of Flanders : a tool for efficient resource management |
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P3 Proceeding |
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2015 |
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3 p.
T2 - IWA Resource Recovery Conference, 30 Aug |
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Keywords |
P3 Proceeding; Engineering sciences. Technology; Sustainable Energy, Air and Water Technology (DuEL) |
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Call Number |
UA @ admin @ c:irua:151142 |
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8308 |
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Author |
Vlaeminck, S.E.; Courtens, E.N.P.; Vandekerckhove, T.G.L.; Boon, N. |
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Title |
Some like it hot : perspectives for thermophilic nitrogen removal |
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P3 Proceeding |
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Year |
2015 |
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4 p.
T2 - IWA Nutrient Removal and Recovery 2015: |
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Keywords |
P3 Proceeding; Engineering sciences. Technology; Sustainable Energy, Air and Water Technology (DuEL) |
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Call Number |
UA @ admin @ c:irua:151145 |
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8552 |
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Author |
Carballa, M.; Smits, M.; Etchebehere, C.; Boon, N.; Verstraete, W. |
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Title |
Correlations between molecular and operational parameters in continuous lab-scale anaerobic reactors |
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A1 Journal article |
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2011 |
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Applied microbiology and biotechnology |
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89 |
Issue |
2 |
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303-314 |
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Keywords |
A1 Journal article; Engineering sciences. Technology; Sustainable Energy, Air and Water Technology (DuEL) |
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Abstract |
In this study, the microbial community characteristics in continuous lab-scale anaerobic reactors were correlated to reactor functionality using the microbial resource management (MRM) approach. Two molecular techniques, denaturing gradient gel electrophoresis (DGGE) and terminal-restriction fragment length polymorphism (T-RFLP), were applied to analyze the bacterial and archaeal communities, and the results obtained have been compared. Clustering analyses showed a similar discrimination of samples with DGGE and T-RFLP data, with a clear separation between the meso- and thermophilic communities. Both techniques indicate that bacterial and mesophilic communities were richer and more even than archaeal and thermophilic communities, respectively. Remarkably, the community composition was highly dynamic for both Bacteria and Archaea, with a rate of change between 30% and 75% per 18 days, also in stable performing periods. A hypothesis to explain the latter in the context of the converging metabolism in anaerobic processes is proposed. Finally, a more even and diverse bacterial community was found to be statistically representative for a well-functioning reactor as evidenced by a low Ripley index and high biogas production. |
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000285872500008 |
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2010-09-27 |
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0175-7598; 1432-0614 |
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UA library record; WoS full record; WoS citing articles |
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Call Number |
UA @ admin @ c:irua:85202 |
Serial |
7736 |
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