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Ethanol production from C1 compounds, such as carbon monoxide, using acetogenic bacteria is an attractive alternative to produce renewable fuels. However, the process is generally associated with acetic acid accumulation, which is often produced in larger quantities than ethanol itself. This study shows the continuous production of ethanol and complete conversion of produced acetic acid to ethanol,...
A two-level full factorial design was carried out in order to investigate the effect of four factors on the bioconversion of carbon monoxide to ethanol and acetic acid by Clostridium autoethanogenum: initial pH (4.75–5.75), initial total pressure (0.8–1.6bar), cysteine–HCl·H 2 O concentration (0.5–1.2g/L) and yeast extract concentration (0.6–1.6g/L). The maximum ethanol production was enhanced...
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