Document Detail

Study on the inhibition of methane production from anaerobic digestion of biodegradable solid waste.
MedLine Citation:
PMID:  19854815     Owner:  NLM     Status:  MEDLINE    
The inhibition effects and mechanisms of chlorinated methane, anthraquinone and acetylene on methanogenesis in the anaerobic digestion process of biodegradable solid wastes were investigated. It was found that both chloroform and acetylene could effectively inhibit methanogens. Acetylene inhibited the activity of methanogens, while chloroform inhibited metabolic process of methanogenesis. A central composite design (CCD) and response surface regression analysis (RSREG) were employed to determine the optimum conditions and interaction effects of chloroform and acetylene in terms of methane and hydrogen production. Acetylene promoted the inhibition efficiency (F = 31.14; P < 0.01) more effectively than chloroform (F = 2.46; P > 0.05). In addition, a maximum hydrogen production of 1.6 ml was estimated under the optimum conditions of chloroform concentration of 6.69 mg kg(-1) and acetylene concentration of 3.08 x 10(-3) (v/v). Chloroform had a significant effect on enhancing the production of propionic acid and a minimum molar ratio of acetic acid to propionic acid of 0.707 was reached with the chloroform concentration of 9.24 mg kg(-1) and acetylene concentration of 4.0 x 10(-3) (v/v). Hence, methanogens can be inhibited while the stabilization process of solid wastes can still work well. Moreover, co-inhibition technology practice at landfills was feasible and the environmental damage was negligible, according to the analysis and experimental results.
Tiantao Zhao; Lijie Zhang; Youcai Zhao
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2009-10-23
Journal Detail:
Title:  Waste management & research : the journal of the International Solid Wastes and Public Cleansing Association, ISWA     Volume:  28     ISSN:  1399-3070     ISO Abbreviation:  Waste Manag Res     Publication Date:  2010 Apr 
Date Detail:
Created Date:  2010-04-13     Completed Date:  2010-05-27     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9881064     Medline TA:  Waste Manag Res     Country:  England    
Other Details:
Languages:  eng     Pagination:  347-54     Citation Subset:  IM    
Department of Chemical and Biological Engineering, Chongqing Institute of Technology, Chongqing, PR China.
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MeSH Terms
Acetylene / metabolism
Anthraquinones / metabolism
Bacteria, Anaerobic
Biodegradation, Environmental
Methane / metabolism*
Refuse Disposal*
Reg. No./Substance:
0/Anthraquinones; 74-82-8/Methane; 74-86-2/Acetylene

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

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