Improvisations in structural features of microbial electrolytic cell and process parameters of electrohydrogenesis for efficient biohydrogen production: a review

Author

Piyush Parkhey and Pratima Gupta

Renewable and Sustainable Energy Reviews, 2017, vol. 69, issue C, pages 1085-1099

Abstract: Hydrogen owing to its high energy content, zero emission of pollutants after combustion and easy availability of substrates for its production has been identified as a model alternative for conventional carbon based energy sources. Biological methods of hydrogen production such as fermentation reactions (dark and photo) or biophotolysis are although the most commonly studied methods, but they results in lower yield and rate. Electrohydrogenesis has been identified as an ideal technology for biohydrogen production which surpasses other biological methods with respect to production yield, rate and energy efficiency. The near complete oxidation of organic substrates and their conversion into biohydrogen ensures it to be an energy efficient and economic process for biohydrogen production. Nevertheless, a number of parameters that govern the process need to be optimized in order to achieve maximum process efficiency. The review briefly discusses the mechanism of hydrogen production in MECs, followed by a detailed review of the major MEC design and process related factors that have been studied and optimized to enhance the economics and energy efficiency of the hydrogen production by electrohydrogenesis.

Keywords: Biohydrogen; Electrohydrogenesis; Microbial fuel cell; Microbial electrolytic cell; Process efficiency (search for similar items in EconPapers)
Date: 2017
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