Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 545750
Title Mixed Culture Biocathodes for Production of Hydrogen, Methane, and Carboxylates
Author(s) Heijne, Annemiek Ter; Geppert, Florian; Sleutels, Tom H.J.A.; Batlle-Vilanova, Pau; Liu, Dandan; Puig, Sebastià
Source In: Bioelectrosynthesis / Scheper, T., Springer Science and Business Media Deutschland GmbH (Advances in Biochemical Engineering/Biotechnology ) - ISBN 9783030032982 - p. 203 - 229.
DOI https://doi.org/10.1007/10_2017_15
Department(s) Biological Recovery & Re-use Technology
WIMEK
Publication type Peer reviewed book chapter
Publication year 2017
Keyword(s) Biocathode - Bioelectrochemical systems - Carboxylate - Hydrogen - Methane
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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