Electrochemical characterization of a microbial electrolysis cell during the bio-electrochemical conversion of CO2 to CH4

被引：6

作者：

Kanellos, Gerasimos ^{[1
]}

Kyriakopoulos, Dimitrios ^{[1
]}

Lyberatos, Gerasimos ^{[1
,2
]}

Tremouli, Asimina ^{[1
]}

机构：

[1] Natl Tech Univ Athens, Sch Chem Engn, Iroon Polytechneiou 9, Athens 15780, Greece

[2] Inst Chem Engn Sci ICE HT, Stadiou Str, Patras 26504, Greece

来源：

BIOCHEMICAL ENGINEERING JOURNAL | 2022年 / 182卷

关键词：

Microbial electrolysis cell; MEC; Biocathode; Biogas upgrade; Charge transfer; Resistance; RENEWABLE ENERGY-SOURCES; METHANE; SYSTEMS;

D O I：

10.1016/j.bej.2022.108431

中图分类号：

Q81 [生物工程学（生物技术）]; Q93 [微生物学];

学科分类号：

071005 ; 0836 ; 090102 ; 100705 ;

摘要：

This study aims to assess the electrochemical performance of a Microbial Electrolysis Cell while bioelectrochemically converting CO2 to CH4 in the cathode and treating synthetic wastewater in the anode. The results indicate that CO2 is converted with a rate of 0.15 mmol/(gCOD_consumed*d). The COD consumption was 75% and the average produced current 0.04 mA/m(2). This corresponds to an initial power density of 180 mW/m(2) and a mean CH4 production of 1.6 mL/d. The electrochemical analyses indicated that charge transfer resistance and sluggish reaction kinetics are the main sources of energy losses, accounting for > 85% of the total resistance.

引用

页数：5

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