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 496019
Title Continuous lactose fermentation by Clostridium acetobutylicum - Assessment of solventogenic kinetics
Author(s) Procentese, Alessandra; Raganati, Francesca; Olivieri, Giuseppe; Russo, Maria Elena; Salatino, Piero; Marzocchella, Antonio
Source Bioresource Technology 180 (2015). - ISSN 0960-8524 - p. 330 - 337.
DOI http://dx.doi.org/10.1016/j.biortech.2015.01.008
Department(s) Bioprocess Engineering
Publication type Refereed Article in a scientific journal
Publication year 2015
Keyword(s) Butanol - Clostridium acetobutylicum - Kinetic model - Microfiltration - Solventogenesis
Abstract

This work reports the results of a series of tests on the specific butanol production rate by Clostridium acetobutylicum continuous cultures. The tests were carried out using lactose as carbon source to mimic cheese-whey. A continuous stirred tank reactor equipped with a microfiltration unit was used. The dilution rate (D) ranged between 0.02 and 0.15h-1 and the ratio R of the permeate stream rate to the stream fed to the reactor ranged between 14% and 95%. For each set of D and R values, the continuous cultures were characterized in terms of concentration of cells, acids and solvents. Results were processed to assess the concentration of acidogenic cells, solventogenic cells, spores and the specific butanol production rate. The max butanol productivity was 0.5gL-1h-1 at D=0.1h-1 and R=95%. The butanol productivity referred to solventogenic cells was expressed as a function of concentration of lactose, acids and butanol.

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