Alkaline fermentation of waste activated sludge with calcium hydroxide to improve short-chain fatty acids production and extraction efficiency via layered double hydroxides

Xiao Ma, Jiongjiong Ye, Li Jiang, Liang Sheng, Jianyong Liu, Yu You Li, Zhi Ping Xu

研究成果: Article査読

12 被引用数 (Scopus)

抄録

Ca(OH)2 addition was proposed to improve short chain fatty acids (SCFAs) production via alkaline fermentation of waste activated sludge (WAS), with CO32− and PO43− being removed simultaneously, so that the SCFAs extraction efficiency could be improved. Alkaline fermentation of WAS with Ca(OH)2 and NaOH addition were performed respectively, and the efficiencies of SCFAs extraction from the fermentation liquids via in situ layered double hydroxides (LDHs) were investigated. The results showed that, the SCFAs production was much more improved with NaOH addition than that with Ca(OH)2 addition. However, the SCFAs contents in the synthesized SCFAs-LDH were 6.7 ± 0.4 mg COD/L (control), 12.4 ± 0.5 mg COD/L (with NaOH addition) and 17.4 ± 0.4 mg COD/L (with Ca(OH)2 addition), respectively. This means that Ca(OH)2 addition is an effective way to improve SCFAs extraction from fermentation liquid of WAS.

本文言語English
ページ(範囲)117-123
ページ数7
ジャーナルBioresource Technology
279
DOI
出版ステータスPublished - 2019 5

ASJC Scopus subject areas

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

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