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 440716
Title Selective carboxylate production by controlling hydrogen, carbon dioxide and substrate concentrations in mixed culture fermentation
Author(s) Arslan, D.; Steinbusch, K.J.J.; Diels, L.; Wever, H. de; Hamelers, H.V.M.; Buisman, C.J.N.
Source Bioresource Technology 136 (2013). - ISSN 0960-8524 - p. 452 - 460.
DOI https://doi.org/10.1016/j.biortech.2013.03.063
Department(s) Environmental Technology
WIMEK
Publication type Refereed Article in a scientific journal
Publication year 2013
Keyword(s) sequencing batch reactor - biohydrogen production - biological production - waste-water - bacteria - glucose - acid - bioconversion - butyrate - caproate
Abstract This research demonstrated the selective production of n-butyrate from mixed culture by applying 2 bar carbon dioxide into the headspace of batch fermenters or by increasing the initial substrate concentration. The effect of increasing initial substrate concentration was investigated at 8, 13.5 and 23 g COD/L with potato processing waste stream. Within 1 week of incubation, n-butyrate fraction selectively increased up to 83% by applying 2 bar hydrogen or 78% by applying carbon dioxide into the headspace whereas it was only 59% in the control reactor. Although the fraction of n-butyrate was elevated, the concentration remained lower than in the control. Both the highest concentration and fraction of n-butyrate were observed under the highest initial substrate concentration without headspace addition. The concentration was 10 g COD/L with 73% fraction. The operational conditions obtained from batch experiments for selective n-butyrate production were validated in a continuous process.
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