Methane production enhancement by an independent cathode in integrated anaerobic reactor with microbial electrolysis

被引：58

作者：

Cai, Weiwei ^{[1
]}

Han, Tingting ^{[1
]}

Guo, Zechong ^{[1
]}

Varrone, Cristiano ^{[3
]}

Wang, Aijie ^{[1
,2
]}

Liu, Wenzong ^{[2
]}

机构：

[1] HIT, SKLUWRE, Harbin 150090, Peoples R China

[2] Chinese Acad Sci, Ecoenvironm Sci Res Ctr, Key Lab Environm Biotechnol, Beijing 100085, Peoples R China

[3] Tech Univ Denmark, Dept Chem & Biochem Engn, DK-2800 Lyngby, Denmark

来源：

BIORESOURCE TECHNOLOGY | 2016年 / 208卷

基金：

中国国家自然科学基金; 美国国家科学基金会;

关键词：

Anaerobic digestion; Methane; Energy recovery; Methanogenesis; Cathode; WASTE ACTIVATED-SLUDGE; SINGLE-CHAMBER; COMMUNITY STRUCTURE; CARBON-DIOXIDE; FLOW; REDUCTION; CELL; METHANOGENESIS; METABOLISM; RETENTION;

D O I：

10.1016/j.biortech.2016.02.028

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

Anaerobic digestion (AD) represents a potential way to achieve energy recovery from waste organics. In this study, a novel bioelectrochemically-assisted anaerobic reactor is assembled by two AD systems separated by anion exchange membrane, with the cathode placing in the inside cylinder (cathodic AD) and the anode on the outside cylinder (anodic AD). In cathodic AD, average methane production rate goes up to 0.070 mL CH4/mL reactor/day, which is 2.59 times higher than AD control reactor (0.027 m(3) CH4/m(3)/d). And COD removal is increased similar to 15% over AD control. When changing to sludge fermentation liquid, methane production rate has been further increased to 0.247 mL CH4/mL reactor/day (increased by 51.53% comparing with AD control). Energy recovery efficiency presents profitable gains, and economic revenue from increased methane totally self-cover the cost of input electricity. The study indicates that cathodic AD could cost-effectively enhance methane production rate and degradation of glucose and fermentative liquid. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：13 / 18

页数：6

共 35 条

[1] A new upgraded biogas production process: Coupling microbial electrolysis cell and anaerobic digestion in single-chamber, barrel-shape stainless steel reactor [J].