Enhanced methane yield in anaerobic digestion of waste activated sludge by combined pretreatment with fungal mash and free nitrous acid

Min Zhang, Yuwei Yang,Huaqian Mou,Aodong Pan,Xiaomei Su,Jianrong Chen,Hongjun Lin,Faqian Sun

Bioresource Technology（2023）

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摘要

•Aspergillus PAD-2 was isolated and cultivated on food waste to produce fungal mash.•Fungal mash promoted the sludge solubilization rate of 548 mg COD L−1h−1.•The combined fungal mash and free nitrous acid improved sCOD release by 2-fold.•Combined pretreatment increased CH4 yield by 100% and reduced the lag time by 80%.

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