Direct biological conversion of electrical current into methane by electromethanogenesis.

  title={Direct biological conversion of electrical current into methane by electromethanogenesis.},
  author={Shaoan A Cheng and Defeng Xing and Douglas F Call and Bruce E Logan},
  journal={Environmental science & technology},
  volume={43 10},
New sustainable methods are needed to produce renewable energy carriers that can be stored and used for transportation, heating, or chemical production. Here we demonstrate that methane can directly be produced using a biocathode containing methanogens in electrochemical systems (abiotic anode) or microbial electrolysis cells (MECs; biotic anode) by a process called electromethanogenesis. At a set potential of less than -0.7 V (vs Ag/AgCl), carbon dioxide was reduced to methane using a two… CONTINUE READING
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