title: Bioelectrochemically-assisted anaerobic composting process enhancing compost maturity of dewatered sludge with synchronous electricity generation.
abstract: Bioelectrochemically-assisted anaerobic composting process (AnCBE) with dewatered sludge as the anode fuel was constructed to accelerate composting of dewatered sludge, which could increase the quality of the compost and harvest electric energy in comparison with the traditional anaerobic composting (AnC). Results revealed that the AnCBE yielded a voltage of 0.60 ± 0.02 V, and total COD (TCOD) removal reached 19.8 ± 0.2% at the end of 35 d. The maximum power density was 5.6 W/m(3). At the end of composting, organic matter content (OM) reduction rate increased to 19.5 ± 0.2% in AnCBE and to 12.9 ± 0.1% in AnC. The fuzzy comprehensive assessment (FCA) result indicated that the membership degree of class I of AnCBE compost (0.64) was higher than that of AnC compost (0.44). It was demonstrated that electrogenesis in the AnCBE could improve the sludge stabilization degree, accelerate anaerobic composting process and enhance composting maturity with bioelectricity generation.
authors.affiliation: School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China.
authors.forename: Hang
authors.initials: H
authors.lastname: Yu
authors.affiliation: School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China.
authors.forename: Junqiu
authors.initials: J
authors.lastname: Jiang
authors.affiliation: School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China; State Key Laboratory of Urban Water Resources and Environments (SKLURE), Harbin Institute of Technology, Harbin 150090, China. Electronic address: qlzhao@hit.edu.cn.
authors.forename: Qingliang
authors.initials: Q
authors.lastname: Zhao
authors.affiliation: School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China; State Key Laboratory of Urban Water Resources and Environments (SKLURE), Harbin Institute of Technology, Harbin 150090, China.
authors.forename: Kun
authors.initials: K
authors.lastname: Wang
authors.affiliation: School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China.
authors.forename: Yunshu
authors.initials: Y
authors.lastname: Zhang
authors.affiliation: School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China.
authors.forename: Zhen
authors.initials: Z
authors.lastname: Zheng
authors.affiliation: School of Environment and Energy Engineering (The R & D Centre for Sustainable Environmental Biotechnology), Beijing University of Civil Engineering and Architecture, Beijing 100044, China.
authors.forename: Xiaodi
authors.initials: X
authors.lastname: Hao
mesh_terms: D000693:Anaerobiosis; D001673:Biodegradation, Environmental; D004560:Electricity; D012037:Refuse Disposal / Q000379:methods; D012722:Sewage / Q000737:chemistry*; D012987:Soil / Q000737:chemistry*
chemical_list: D012722:Sewage; D012987:Soil
keywords: Anaerobic compost maturity; Anaerobic composting (AnC); Bioelectrochemical devices; Dewatered sludge; Fuzzy comprehensive assessment (FCA)