Linked Life Data

17336364

Source:http://linkedlifedata.com/resource/pubmed/id/17336364

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
9
pubmed:dateCreated
2007-4-10
pubmed:abstractText
Thermophilic hydrogenogenic carbon monoxide (CO) converting microorganisms present in anaerobic sludge play a crucial role in the application of CO as electron donor for sulfate reduction. Hydrogenogenic CO conversion was investigated in a gas lift reactor (55 degrees C) at different hydraulic retention times (HRT). Operation at a HRT>9h resulted in predominant consumption of CO-derived H2 by methanogens (up to 90%) and thus in a poor sulfate reduction efficiency of less than 15%. At HRTs<4 h, consumption of the CO-derived H2 was dominated by sulfate-reducers, i.e. up to 95% of H2 was used for sulfate reduction. Sulfate reduction rates of 17 mmol L(-1)d(-1) were achieved at a HRT of 3h, with over 87% of the H2 produced used for sulfate reduction. Methane production, however, persisted when operating under these conditions and increasing the HRT by returning it to values >5.5h resulted in a dominance of methanogenesis over sulfate reduction. The sulfate reduction rates were limited by the amount of CO supplied and its conversion efficiency (about 85%) at higher CO loads likely resulting from a low biomass retention.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
May
pubmed:issn
0043-1354
pubmed:author
pubmed:issnType
Print
pubmed:volume
41
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1995-2003
pubmed:meshHeading
pubmed:year
2007
pubmed:articleTitle
Effect of hydraulic retention time on sulfate reduction in a carbon monoxide fed thermophilic gas lift reactor.
pubmed:affiliation
Sub-Department of Environmental Technology, Wageningen University, Bomenweg 2, P.O. Box 8129, 6700 EV Wageningen, The Netherlands.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't