环境工程学报2025，Vol.19Issue(9)：2199-2209,11.DOI:10.12030/j.cjee.202409086
生物炭对餐厨垃圾压榨液厌氧消化的强化性能及机理
Enhanced performance and mechanism of biochar on anaerobic digestion of kitchen waste press liquor
摘要
Abstract
To address the issue of low interspecies electron transfer efficiency affecting the methane production in anaerobic digestion,biochar,a conductive material,was introduced into the anaerobic fermentation system using kitchen waste press liquor as the substrate.The impact of biochar particle size on direct interspecies electron transfer(DIET)and methanogenic capacity was comprehensively investigated.The results indicated that the maximum methanogenic potential initially increased and then decreased with biochar particle size enlargement,with 40-80 mesh being the optimal size,enhancing the maximum methane production potential and shortening the lag phase by 17.09%and 21.74%,respectively.Sludge characterisation revealed that biochar facilitated the establishment of the DIET pathway during anaerobic methanogenesis.The conductivity,ETS activity,and coenzyme F420 concentration of the optimal particle size group were 1.04,1.46,and 2.51 times higher than those of the blank group,respectively.Microbiological analyses showed that biochar increased the relative abundance of Proteobacteria,Chloroflexi,Methanoculleus,and Methanosarcina by 86.56,71.62,27.16,and 337.87%,respectively,suggesting that biochar successfully constructed the DIET pathway among microorganisms,thereby increasing the cumulative methane production during anaerobic fermentation.关键词
餐厨垃圾压榨液/生物炭/粒径/直接种间电子转移/胞外聚合物Key words
kitchen waste press liquor/biochar/particle size/direct interspecies electron transfer/extracellular polymers分类
资源环境引用本文复制引用
叶璐,王罗春,楼紫阳,王甜甜,陈星航,王兰,孙梦圆,张珊..生物炭对餐厨垃圾压榨液厌氧消化的强化性能及机理[J].环境工程学报,2025,19(9):2199-2209,11.基金项目
国家自然科学基金资助项目(42077111) （42077111）
国家重点研发计划资助项目(2018YFC1800600) （2018YFC1800600）
"科技兴蒙"上海交通大学行动计划专项资助项目(2021PT0045-02-01) （2021PT0045-02-01）
