Chapter title |
Mixed Culture Biocathodes for Production of Hydrogen, Methane, and Carboxylates
|
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Chapter number | 15 |
Book title |
Bioelectrosynthesis
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Published in |
Advances in biochemical engineering biotechnology, January 2017
|
DOI | 10.1007/10_2017_15 |
Pubmed ID | |
Book ISBNs |
978-3-03-003298-2, 978-3-03-003299-9
|
Authors |
Annemiek ter Heijne, Florian Geppert, Tom H. J. A. Sleutels, Pau Batlle-Vilanova, Dandan Liu, Sebastià Puig, ter Heijne, Annemiek, Geppert, Florian, Sleutels, Tom H. J. A., Batlle-Vilanova, Pau, Liu, Dandan, Puig, Sebastià |
Abstract |
Formation of hydrogen, methane, and organics at biocathodes is an attractive new application of bioelectrochemical systems (BESs). Using mixed cultures, these products can be formed at certain cathode potentials using specific operating conditions, of which pH is important. Thermodynamically, the reduction of CO2 to methane is the most favorable reaction, followed by reduction of CO2 to acetate and ethanol, and hydrogen. In practice, however, the cathode potential at which these reactions occur is more negative, meaning that more energy is required to drive the reaction. Therefore, hydrogen is often found as a second product or intermediate in the conversion of CO2 to both methane and carboxylates. In this chapter we summarize the inocula used for biocathode processes and discuss the achieved conversion rates and cathode potentials for formation of hydrogen, methane, and carboxylates. Although this overview reveals that BESs offer new opportunities for the bioproduction of different compounds, there are still challenges that need to be overcome before these systems can be applied on a larger scale. Graphical Abstract. |
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Spain | 6 | 60% |
Unknown | 4 | 40% |
Demographic breakdown
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Scientists | 6 | 60% |
Members of the public | 4 | 40% |
Mendeley readers
Geographical breakdown
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Unknown | 54 | 100% |
Demographic breakdown
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Student > Ph. D. Student | 15 | 28% |
Researcher | 11 | 20% |
Student > Bachelor | 4 | 7% |
Other | 3 | 6% |
Student > Master | 3 | 6% |
Other | 8 | 15% |
Unknown | 10 | 19% |
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Environmental Science | 7 | 13% |
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Chemical Engineering | 4 | 7% |
Other | 5 | 9% |
Unknown | 21 | 39% |