Enhanced anaerobic digestion for degradation of swine wastewater through a Fe/Ni-MOF modified microbial electrolysis cell
文献类型： 外文期刊
作者： Wang, Chengcheng 1 ; Ye, Xiaomei 1 ; Liu, Yang 1 ; Jia, Zhaoyan 1 ; Cao, Chunhui 1 ; Xiao, Qingbo 1 ; Du, Jing 1 ; Kong, Xiangping 1 ; Wu, Xiayuan 4 ; Chen, Zhongbing 5 ; Xi, Yonglan 1 ;
作者机构： 1.Jiangsu Acad Agr Sci, Nanjing 210014, Peoples R China
2.Jiangsu Collaborat Innovat Ctr Solid Organ Waste R, Minist Agr & Rural Affairs, Key Lab Crop & Livestock Integrat, East China Sci Observing Expt Stn Dev & Utilizat R, Nanjing 210014, Peoples R China
3.Jiangsu Univ, Sch Agr Engn, Zhenjiang 212013, Peoples R China
4.Nanjing Tech Univ, Bioenergy Res Inst, Coll Biotechnol & Pharmaceut Engn, Nanjing 211816, Peoples R China
5.Czech Univ Life Sci Prague, Fac Environm Sci, Dept Appl Ecol, Kamycka 129, Prague 16521, Czech Republic
关键词： Microbial electrolytic cell; Anaerobic digestion; Metal organic framework; Swine wastewater; Methane
期刊名称：JOURNAL OF CLEANER PRODUCTION （ 影响因子：11.072； 五年影响因子：11.016 ）
ISSN： 0959-6526
年卷期： 2022 年 380 卷
页码：
收录情况： SCI
摘要： Stainless steel mesh, as the common cathode of microbial electrolytic cell-assisted anaerobic digestion (MEC-AD), has the disadvantages of low specific surface area, poor biocompatibility and low catalytic activity, which limits the production of methane. Metal-organic frameworks (MOFs) have attracted much attention due to their adjustable pores and specific catalytic properties. However, little attention was paid to the combination of MOF and stainless-steel mesh to improve the performance of MEC-AD cathode. In this study, we combined stainless steel mesh with bimetallic MOF catalyst (Fe/Ni-NH2BDC) to prepare a composite cathode, and verified its promoting effect on AD of swine wastewater. The experimental results showed that the reactor with the carbonized MOF composite cathode (FeNi2-PAN2) achieved the highest soluble chemical oxygen demand removal rate of 82.92% and a maximum cumulative methane yield of 213.47 mL CH4/g COD under an applied voltage of 0.8 V, which were 33.14% and 57.56% higher than those of an anaerobic digestion (AD) control reactor, respectively, and higher than those of a carbon paper (CP) cathode reactor. The enrichment of Meth-anobacterium and Methanoculleus on the surface of FeNi2-PAN2 cathode surface indicated that FeNi2-PAN2 cathode enhanced hydrogenotrophic methanogenesis and improved the stability of AD.
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