Linked Life Data

11064338

Source:http://linkedlifedata.com/resource/pubmed/id/11064338

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
6
pubmed:dateCreated
2000-12-11
pubmed:abstractText
A series of experiments was performed in an aerobic chemostat reactor using a multi-substrate system consisting of acetate, phenol, and 2,4-dichlorophenol (DCP). The phenolic compounds require initial oxygenation reactions, while acetate is oxidized without oxygenations. The biomass completely dechlorinated DCP and utilized all of the substrates simultaneously as electron donors and carbon sources. However, DCP removal was less than for phenol and depended on the solids retention time. A novel substrate-specific yield analysis indicated that true yield values were approximated well by the number of electrons removed in non-oxygenation reactions. Experiments for estimating the kinetic parameters for utilization of the phenolic compounds were designed to eliminate the effects of the key cosubstrates of oxygenation reactions, O2, and the reduced intracellular electron carrier, NADH + H+. The maximum specific rate of substrate utilization, qmax, and the half-maximum rate concentration, K, for phenol and DCP were estimated. The kinetics for DCP were much slower than those for phenol, and the largest effect was a half-maximum rate concentration, which was 19 times larger for DCP. The larger K for DCP explains why DCP removal was low and sensitive to the solids retention time.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Dec
pubmed:issn
0006-3592
pubmed:author
pubmed:issnType
Print
pubmed:day
20
pubmed:volume
70
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
685-92
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
2000
pubmed:articleTitle
Analysis of oxygenation reactions in a multi-substrate system-A new approach for estimating substrate-specific true yields.
pubmed:affiliation
Exponent Failure Analysis Associates, 149 Commonwealth Drive, Menlo Park, California 94025, USA. edahlen@exponent.com
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't