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 dil | İngilizce |
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Makale numarası | 116723 |
Dergi | Journal of Environmental Management |
Hacim | 326 |
DOI'lar | |
Yayın durumu | Yayınlandı - 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 ).
Finansörler | Finansör numarası |
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Natural Science Foundation of Jiangsu Province | BK20181344 |
Collaborative Innovation Center for Water Treatment Technology and Materials | XTCXSZ2022-15 |