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Decanter cake waste as a renewable substrate for biobutanol production by Clostridium beijerinckii

Paper ID Volume ID Publish Year Pages File Format Full-Text
34424 45025 2013 9 PDF Available
Title
Decanter cake waste as a renewable substrate for biobutanol production by Clostridium beijerinckii
Abstract

•Decanter cake waste could be used as a renewable source for biobutanol production.•Decanter cake waste from palm oil mill was acid hydrolyzed and detoxified.•Detoxified hydrolysate was used as a sole carbon source for butanol production.•Detoxified hydrolysate was also used as a co-substrate for direct conversion of butyric acid to butanol.

The aim of this study was to determine if decanter cake waste from a palm oil mill could be used as a renewable substrate for biobutanol production. Decanter cake waste was first hydrolyzed to fermentable sugars by nitric acid and detoxified by activated-charcoal. The detoxified hydrolysate supplemented with whey protein and ammonium sulfate as cheap nitrogen sources, was used for butanol production by growing cells of Clostridium beijerinckii. The detoxified hydrolysate was also used as a co-substrate for direct conversion of butyric acid to butanol in a nitrogen-free medium. By these two steps, C. beijerinckii produced 3.42 g/L of butanol with a yield of 0.28 C-mol butanol/C-mol carbon in the first step and produced 6.94 g/L of butanol with a yield of 0.47 C-mol butanol/C-mol carbon in the second step. This study has showed that decanter cake waste could serve as a low-cost substrate for biobutanol production.

Keywords
Butanol; Butyric acid; Clostridium beijerinckii; Decanter cake
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Decanter cake waste as a renewable substrate for biobutanol production by Clostridium beijerinckii
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Publisher
Database: Elsevier - ScienceDirect
Journal: Process Biochemistry - Volume 48, Issue 12, December 2013, Pages 1933–1941
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us