Post-treatment of anaerobic effluents using methane-driven microbial fuel cells
The effluent of mainstream anaerobic treatment processes such as anaerobic membrane bioreactors contains dissolved methane (dCH4) that represents a large fraction of the available energy (approximately 50% at 15℃) and a significant greenhouse gas emission if released to the atmosphere.Microbial fuel cells (MFCs),which rely on exoelectrogenic microorganisms to generate electricity from organic or inorganic matter,could be used downstream of anaerobic treatment processes to recover energy and mitigate dCH4 emission.Bench-scale MFCs were constructed and operated to evaluate the impact of hydraulic retention time and temperature on performance and microbial community dynamics.In the best scenario,85% dCH4 removal was achieved resulting in generation of 0.55 ±0.06 V.Based on RT-qPCR and Illumina sequencing results,aerobic methanotrophs and Geobacter spp.colonized the cathode and anode,respectively,suggesting a unique interaction between these microbial consortia.
Anaerobic membrane bioreactor dissolved methane MFCs Illumina sequencing
Siming Chen Adam Smith
Department of Civil and Environmental Engineering, University of Southern California, 3620 South Vermont Avenue, Los Angeles, California 90089
国际会议
The 15th IWA World Conference on Anaerobic Digestion( 第15届IWA世界厌氧大会)
北京
英文
781-784
2017-10-17（万方平台首次上网日期，不代表论文的发表时间）