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 510183
Title In-situ carboxylate recovery and simultaneous pH control with tailor-configured bipolar membrane electrodialysis during continuous mixed culture fermentation
Author(s) Arslan, D.; Zhang, Y.; Steinbusch, K.J.J.; Diels, L.; Hamelers, Hubertus V.M.; Buisman, C.J.N.; Wever, H. de
Source Separation and Purification Technology 175 (2017). - ISSN 1383-5866 - p. 27 - 35.
DOI https://doi.org/10.1016/j.seppur.2016.11.032
Department(s) Resource Ecology
Sub-department of Environmental Technology
WIMEK
Publication type Refereed Article in a scientific journal
Publication year 2017
Keyword(s) Bipolar membrane - Electrodialysis - Fermentation - ISPR - Short chain carboxylates
Abstract

Anaerobic fermentation of organic waste streams by mixed culture generates a mixture of short chain carboxylic acids. To avoid inhibitory effects of the acids or their consumption in internal conversion reactions in the mixed culture environment, in-situ recovery of acids can be beneficial. In this study, electrodialysis with bipolar membranes (EDBM) was applied to a mixed culture fermentation on organic waste streams using a novel EDBM stack with “direct contact” operation mode. We could demonstrate simultaneous recovery of carboxylates from the fermenter by the EDBM stack while in-situ generation and transport of hydroxyl ions to the fermenter allowed direct pH control. Experiments showed productivity increase after EDBM coupling to the fermenter, and complete elimination of external base consumption. It was also observed that EDBM was able to drive the mixed culture fermentation towards acetate and propionate type of carboxylates.

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