One-stage anaerobic fermentation of excess sludge for caproate production by supplementing chain elongation enrichments with ethanol as electron donor

Bo Fu, Yujie Lu, Hongbo Liu, Xuedong Zhang, Hale Ozgun, Mustafa Evren Ersahin, He Liu*

*Bu çalışma için yazışmadan sorumlu yazar

Araştırma sonucu: Dergiye katkıMakalebilirkişi

18 Atıf (Scopus)

Özet

Medium chain fatty acids (MCFAs) production from excess sludge have recently received great research interest due to higher energy densities, easy-separation capability and high economic benefits. Here, the addition of chain elongation (CE) enrichments with ethanol as electron donor was used to enhance caproate production from one-stage sludge fermentation. Compared with 0.20 g/L of controls, caproate production reached 9.00 g/L by supplementing CE enrichments with ethanol/acetate ratio of 3:1 after 7 days of acidification of organic matter in pretreated sludge fermentation. Clostridium_sensu_stricto_12, that refers to CE, was enriched in the first and second transfer of the sludge microbial consortium. Maintaining the stability of the microbial consortium would be the key that enables stable and efficient caproate production from sludge fermentation by supplementing CE enrichments.

Orijinal dilİngilizce
Makale numarası116723
DergiJournal of Environmental Management
Hacim326
DOI'lar
Yayın durumuYayınlandı - 15 Oca 2023

Bibliyografik not

Publisher Copyright:
© 2022 Elsevier Ltd

Finansman

This research is supported by the Natural Science Foundation of Jiangsu Province ( BK20181344 ) and Jiangsu Collaboration Innovation Center of Technology and Material of Water Treatment ( XTCXSZ2022-15 ).

FinansörlerFinansör numarası
Natural Science Foundation of Jiangsu ProvinceBK20181344
Collaborative Innovation Center for Water Treatment Technology and MaterialsXTCXSZ2022-15

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