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Butanol production from thin stillage using Clostridium pasteurianum.
MedLine Citation:
PMID:  21316947     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
The production of butanol from thin stillage by Clostridium pasteurianum DSM 525 was evaluated in the paper. At initial pH values ranging from 5.0 to 7.0 C. pasteurianum DSM 525 produced 6.2-7.2g/L of butanol utilizing glycerol in thin stillage as the main carbon source, with yields of 0.32-0.44g butanol produced/g glycerol consumed, which are higher than previously reported yields (e.g., 0.14-0.31g butanol/g glycerol, Biebl, 2001). Lactic acid in the thin stillage acted as a buffering agent, maintaining the pH of the medium within a range of 5.7-6.1. Lactic acid was also utilized along with glycerol, enhancing butanol production (6.5g/L butanol vs. 8.7g/L butanol with 0 and 16g/L lactic acid, respectively). These results demonstrate the feasibility of cost-effective butanol production using thin stillage as a nutrient-containing medium with a pH buffering capacity.
Authors:
Jae-Hyung Ahn; Byoung-In Sang; Youngsoon Um
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-1-20
Journal Detail:
Title:  Bioresource technology     Volume:  -     ISSN:  1873-2976     ISO Abbreviation:  -     Publication Date:  2011 Jan 
Date Detail:
Created Date:  2011-2-14     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9889523     Medline TA:  Bioresour Technol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2011 Elsevier Ltd. All rights reserved.
Affiliation:
Clean Energy Center, Korea Institute of Science and Technology, 39-1 Hawolgok-dong, Seongbuk-gu, Seoul 136-791, Republic of Korea.
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