TY - JOUR
T1 - Short-chain fatty acids recovery from sewage sludge via acidogenic fermentation as a carbon source for denitrification
T2 - A review
AU - Liu, Wen
AU - Yang, Huan
AU - Ye, Jiongjiong
AU - Luo, Jinghuan
AU - Li, Yu You
AU - Liu, Jianyong
N1 - Funding Information:
This study was financially supported by the National Natural Science Foundation of China ( 51778352 ), the Science and Technology Commission of Shanghai Municipality ( 18230710900 ).
Publisher Copyright:
© 2020 Elsevier Ltd
Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2020/9
Y1 - 2020/9
N2 - Wastewater treatment plants face the problem of a shortage of carbon source for denitrification. Acidogenic fermentation is an effective method for recovering short-chain fatty acids (SCFAs) as a carbon source from sewage sludge. Herein, the most recent advances in SCFAs production from primary sludge and waste activated sludge are systematically summarised and discussed. New technologies and problems pertaining to the improvement in SCFAs availability in fermentation liquids, including removal of ammoniacal nitrogen and phosphate and extraction of SCFAs from fermentation liquids, are analysed and evaluated. Furthermore, studies on the use of recovered SCFAs as a carbon source for denitrification are reviewed. Based on the above summarisation and discussion, some conclusions as well as perspectives on future studies and practical applications are presented. In particular, the recovery of carbon source/bioenergy from sewage sludge must be optimised considering nutrient removal/recovery simultaneously.
AB - Wastewater treatment plants face the problem of a shortage of carbon source for denitrification. Acidogenic fermentation is an effective method for recovering short-chain fatty acids (SCFAs) as a carbon source from sewage sludge. Herein, the most recent advances in SCFAs production from primary sludge and waste activated sludge are systematically summarised and discussed. New technologies and problems pertaining to the improvement in SCFAs availability in fermentation liquids, including removal of ammoniacal nitrogen and phosphate and extraction of SCFAs from fermentation liquids, are analysed and evaluated. Furthermore, studies on the use of recovered SCFAs as a carbon source for denitrification are reviewed. Based on the above summarisation and discussion, some conclusions as well as perspectives on future studies and practical applications are presented. In particular, the recovery of carbon source/bioenergy from sewage sludge must be optimised considering nutrient removal/recovery simultaneously.
KW - Acidogenic fermentation
KW - Carbon source
KW - Denitrification
KW - Sewage sludge
KW - Short-chain fatty acids
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U2 - 10.1016/j.biortech.2020.123446
DO - 10.1016/j.biortech.2020.123446
M3 - Article
C2 - 32402992
AN - SCOPUS:85085134331
VL - 311
JO - Bioresource Technology
JF - Bioresource Technology
SN - 0960-8524
M1 - 123446
ER -