PMID- 27619497 OWN - NLM STAT- MEDLINE DCOM- 20170505 LR - 20170911 IS - 1879-2448 (Electronic) IS - 0043-1354 (Linking) VI - 105 DP - 2016 Nov 15 TI - Effect of nonylphenol on volatile fatty acids accumulation during anaerobic fermentation of waste activated sludge. PG - 209-217 LID - S0043-1354(16)30668-6 [pii] LID - 10.1016/j.watres.2016.08.062 [doi] AB - Most of the reported studies on anaerobic fermentation of sludge focused on the influences of operating conditions, pretreatment methods, and its characteristics, and little attention was paid to those of persistent organic pollutants (POPs) which widespreadly appeared in sludge. In this study, the effect of nonylphenol, a typical POPs in waste activated sludge (WAS), on anaerobic fermentation for volatile fatty acids (VFAs) accumulation was investigated. The concentration of VFAs during WAS anaerobic fermentation was found to be affected positively from 2856 mg COD/L in the control (without NP) to 5620 mg COD/L with NP of 200 mg/kg dry sludge. Mechanism exploration exhibited that the main reason for the enhanced VFAs accumulation in the presence of NP was that more acetic acid was generated during the acidification of WAS, which was increased by almost three times (3790 versus 1310 mg COD/L). In WAS fermentation systems, the abundance of anaerobic functional microorganisms was advantageous to the accumulation of acetic acid. Further investigation by the pure acetogen revealed that both the viability and activity of Proteiniphilum acetatigenes were improved by NP during anaerobic fermentation, resulting in more production of acetic acid and showing good agreement with that in the real WAS fermentation systems. CI - Copyright (c) 2016 Elsevier Ltd. All rights reserved. FAU - Duan, Xu AU - Duan X AD - State Key Laboratory of Pollution Control and Resources Reuse, School of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, China. FAU - Wang, Xiao AU - Wang X AD - State Key Laboratory of Pollution Control and Resources Reuse, School of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, China. FAU - Xie, Jing AU - Xie J AD - State Key Laboratory of Pollution Control and Resources Reuse, School of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, China. FAU - Feng, Leiyu AU - Feng L AD - State Key Laboratory of Pollution Control and Resources Reuse, School of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, China; Research & Service Center for Environmental Industry, Yancheng 224051, Jiangsu Province, China. Electronic address: leiyufeng@tongji.edu.cn. FAU - Yan, Yuanyuan AU - Yan Y AD - State Key Laboratory of Pollution Control and Resources Reuse, School of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, China; Research & Service Center for Environmental Industry, Yancheng 224051, Jiangsu Province, China. Electronic address: yanyuanyuan@tongji.edu.cn. FAU - Zhou, Qi AU - Zhou Q AD - State Key Laboratory of Pollution Control and Resources Reuse, School of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, China. LA - eng PT - Journal Article DEP - 20160830 PL - England TA - Water Res JT - Water research JID - 0105072 RN - 0 (Fatty Acids, Volatile) RN - 0 (Sewage) RN - Q40Q9N063P (Acetic Acid) SB - IM MH - Acetic Acid MH - Fatty Acids, Volatile/biosynthesis MH - *Fermentation MH - Hydrogen-Ion Concentration MH - *Sewage OTO - NOTNLM OT - Acetic acid OT - Acetogen OT - Anaerobic fermentation OT - Nonylphenol OT - Waste activated sludge EDAT- 2016/09/14 06:00 MHDA- 2017/05/06 06:00 CRDT- 2016/09/14 06:00 PHST- 2016/05/21 00:00 [received] PHST- 2016/08/13 00:00 [revised] PHST- 2016/08/29 00:00 [accepted] PHST- 2016/09/14 06:00 [pubmed] PHST- 2017/05/06 06:00 [medline] PHST- 2016/09/14 06:00 [entrez] AID - S0043-1354(16)30668-6 [pii] AID - 10.1016/j.watres.2016.08.062 [doi] PST - ppublish SO - Water Res. 2016 Nov 15;105:209-217. doi: 10.1016/j.watres.2016.08.062. Epub 2016 Aug 30.