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 456624
Title Theory of ion transport with fast acid-base equilibrations in bioelectrochemical systems
Author(s) Dykstra, J.E.; Biesheuvel, P.M.; Bruning, H.; Heijne, A. ter
Source Physical Review. E, Statistical nonlinear, and soft matter physics 90 (2014). - ISSN 1539-3755 - 10 p.
DOI https://doi.org/10.1103/PhysRevE.90.013302
Department(s) Environmental Technology
WIMEK
Publication type Refereed Article in a scientific journal
Publication year 2014
Keyword(s) microbial electrolysis cell - hydrogen-production - fuel-cells - quantitative approach - mathematical-model - ammonium recovery - chemical-reaction - inorganic carbon - urine - absorption
Abstract Bioelectrochemical systems recover valuable components and energy in the form of hydrogen or electricity from aqueous organic streams. We derive a one-dimensional steady-state model for ion transport in a bioelectrochemical system, with the ions subject to diffusional and electrical forces. Since most of the ionic species can undergo acid-base reactions, ion transport is combined in our model with infinitely fast ion acid-base equilibrations. The model describes the current-induced ammonia evaporation and recovery at the cathode side of a bioelectrochemical system that runs on an organic stream containing ammonium ions. We identify that the rate of ammonia evaporation depends not only on the current but also on the flow rate of gas in the cathode chamber, the diffusion of ammonia from the cathode back into the anode chamber, through the ion exchange membrane placed in between, and the membrane charge density.
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