Short-chain fatty acids recovery from sewage sludge via acidogenic fermentation as a carbon source for denitrification: A review

Wen Liu, Huan Yang, Jiongjiong Ye, Jinghuan Luo, Yu You Li, Jianyong Liu

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

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.

Original languageEnglish
Article number123446
JournalBioresource Technology
Volume311
DOIs
Publication statusPublished - 2020 Sep

Keywords

  • Acidogenic fermentation
  • Carbon source
  • Denitrification
  • Sewage sludge
  • Short-chain fatty acids

ASJC Scopus subject areas

  • Bioengineering
  • Environmental Engineering
  • Renewable Energy, Sustainability and the Environment
  • Waste Management and Disposal

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