Document Detail

Methane production from rice straw pretreated by a mixture of acetic-propionic acid.
MedLine Citation:
PMID:  19804968     Owner:  NLM     Status:  MEDLINE    
Rice straw was treated with a mixed solution of acetic acid and propionic acid to enhance its biodegradability. The effect of acid concentration, pretreatment time, and the ratio of solid to liquid on the delignification performance of rice straw were investigated. It was found that the optimal conditions for hydrolysis were 0.75 mol/L acid concentration, 2h pretreatment time and 1:20 solid to liquid ratio. Batch methane fermentation of untreated rice straw, pretreated rice straw, and the hydrolysates (the liquid fraction) of pretreatment were conducted at 35 degrees C for 30 days, and the results indicated that methane production of rice straw can be enhanced by dilute organic acid pretreatment. Moreover, most of the acid in hydrolysates can also be converted into methane gas.
Rui Zhao; Zhenya Zhang; Ruiqin Zhang; Miao Li; Zhongfang Lei; Motoo Utsumi; Norio Sugiura
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2009-10-04
Journal Detail:
Title:  Bioresource technology     Volume:  101     ISSN:  1873-2976     ISO Abbreviation:  Bioresour. Technol.     Publication Date:  2010 Feb 
Date Detail:
Created Date:  2009-10-23     Completed Date:  2010-02-17     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9889523     Medline TA:  Bioresour Technol     Country:  England    
Other Details:
Languages:  eng     Pagination:  990-4     Citation Subset:  IM    
Graduate School of Life and Environmental Sciences, University of Tsukuba, Tsukuba, 305-8577 Ibaraki, Japan.
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MeSH Terms
Acetic Acid / chemistry*
Biodegradation, Environmental
Cellulose / chemistry
Lignin / chemistry
Methane / chemistry*
Microscopy, Electron, Scanning / methods
Oryza sativa / embryology*
Propionic Acids / chemistry*
Time Factors
Reg. No./Substance:
0/Gases; 0/Propionic Acids; 0/Sewage; 64-19-7/Acetic Acid; 74-82-8/Methane; 79-09-4/propionic acid; 9004-34-6/Cellulose; 9005-53-2/Lignin

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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