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Process stability and microbial community structure in anaerobic hydrogen-producing microflora from food waste containing kimchi

Paper ID Volume ID Publish Year Pages File Format Full-Text
25177 43558 2007 9 PDF Available
Title
Process stability and microbial community structure in anaerobic hydrogen-producing microflora from food waste containing kimchi
Abstract

Hydrogen production by the dark fermentation of food wastes is an economic and environmentally friendly technology to produce the clean energy source as well as to treat the problematic wastes. However, the long-term operations of the continuous anaerobic reactor for fermentative hydrogen production were frequently unstable. In this study, the structure of microbial community within the anaerobic reactor during unstable hydrogen production was examined by denaturing gradient gel electrophoresis (DGGE) and terminal restriction fragment length polymorphism (T-RFLP) techniques. The changes in microbial community from H2-producing Clostridium spp. to lactic acid-producing Lactobacillus spp. were well coincident with the unexpected process failures and the changes of metabolites concentrations in the effluent of the anaerobic reactor. As the rate of hydrogen production decreased, effluent lactic acid concentration increased. Low rate of hydrogen production and changes in microbial community were related to the ‘kimchi’ content and storage temperature of food waste feed solution. After low temperature control of the storage tank of the feed solution, any significant change in microbial community within the anaerobic reactor did not occur and the hydrogen production was very stably maintained for a long time.

Keywords
Biological hydrogen production; Microbial community; Food wastes; System stability
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Process stability and microbial community structure in anaerobic hydrogen-producing microflora from food waste containing kimchi
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Biotechnology - Volume 131, Issue 3, 15 September 2007, Pages 300–308
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