Recovery of butanol from fermentation broth by gas stripping

N Qureshi and H.p Blaschek

Renewable Energy, 2001, vol. 22, issue 4, 557-564

Abstract: This is an overview of the butanol (usually called acetone butanol ethanol, ABE) fermentation in various types of reactor systems and recovery by gas stripping. Gas stripping is a simple technique which does not require expensive apparatus, does not harm the culture, does not remove nutrients and reaction intermediates and reduces butanol toxicity (inhibition). As a result of butanol removal by gas stripping, concentrated sugar solutions can be used to produce butanol/ABE. Compared to sugar utilization of 30 gl−1 in a control batch reactor, sugar utilization of 199 gl−1 has been reported with 69.7 gl−1 solvent production. In fed-batch reactors concentrated sugar solutions (350 gl−1) have been used. Additionally, the process of ABE production results in concentrated product streams containing 9.1–120 gl−1 butanol/ABE. In the integrated ABE production and recovery systems, selectivities of 4–30.5 have been reported.

Date: 2001
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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:22:y:2001:i:4:p:557-564

DOI: 10.1016/S0960-1481(00)00108-7

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