Document Detail


Analysis of methanogenic activity in a thermophilic-dry anaerobic reactor: use of fluorescent in situ hybridization.
MedLine Citation:
PMID:  18951008     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Methanogenic activity in a thermophilic-dry anaerobic reactor was determined by comparing the amount of methane generated for each of the organic loading rates with the size of the total and specific methanogenic population, as determined by fluorescent in situ hybridization. A high correlation was evident between the total methanogenic activity and retention time [-0.6988Ln(x)+2.667] (R(2) 0.8866). The total methanogenic activity increased from 0.04x10(-8) mLCH(4) cell(-1)day(-1) to 0.38x10(-8) mLCH(4) cell(-1)day(-1) while the retention time decreased, augmenting the organic loading rates. The specific methanogenic activities of H(2)-utilizing methanogens and acetate-utilizing methanogens increased until they stabilised at 0.64x10(-8) mLCH(4) cell(-1)day(-1) and 0.33x10(-8) mLCH(4) cell(-1)day(-1), respectively. The methanogenic activity of H(2)-utilizing methanogens was higher than acetate-utilizing methanogens, indicating that maintaining a low partial pressure of hydrogen does not inhibit the acetoclastic methanogenesis or the anaerobic process.
Authors:
B Montero; J L García-Morales; D Sales; R Solera
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2008-10-23
Journal Detail:
Title:  Waste management (New York, N.Y.)     Volume:  29     ISSN:  0956-053X     ISO Abbreviation:  Waste Manag     Publication Date:  2009 Mar 
Date Detail:
Created Date:  2009-01-14     Completed Date:  2009-04-06     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9884362     Medline TA:  Waste Manag     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1144-51     Citation Subset:  IM    
Affiliation:
Department of Chemical Engineering, Food and Environmental Technologies, Faculty of Marine and Environmental Sciences, University of Cadiz, Campus Río San Pedro s/n, 11510-Puerto Real, Cadiz, Spain.
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MeSH Terms
Descriptor/Qualifier:
Acetates / chemistry,  metabolism
Anaerobiosis
Bioreactors*
Hydrogen / chemistry,  metabolism
In Situ Hybridization, Fluorescence*
Methane / analysis*,  chemistry,  metabolism
Thermoanaerobacter*
Time Factors
Chemical
Reg. No./Substance:
0/Acetates; 1333-74-0/Hydrogen; 74-82-8/Methane

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


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