Linked Life Data

18025729

Source:http://linkedlifedata.com/resource/pubmed/id/18025729

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
9
pubmed:dateCreated
2007-11-20
pubmed:abstractText
Kinetic models in activated sludge, anaerobic digestion and other environmental modeling fields rely on the proper formulation of stoichiometric coefficients. Elemental balancing provides a simple and rigorous way to establish the stoichiometric coefficients of reactions represented in the Gujer matrix. The deduction of these coefficients is frequently trivial, from basic mass balancing considerations. In more complex cases, such as the Anammox growth reaction, rigorous elemental balancing is required to establish the proper formulation. This paper demonstrates the methodology based on a simple aerobic heterotrophic growth reaction where stoichiometry coefficients (such as the (1-Y(H))/Y(H) term for oxygen) are well known. In the second step the methodology is applied for the Anammox growth reaction. The fraction of N(2) gas in current models originates from the NH(4)+ and the NO(2)- electron donor/acceptor pair in equal proportion. This paper demonstrates that this stoichiometry is a simplification leading to elemental balance errors. The proper stoichiometric coefficients are derived.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
0273-1223
pubmed:author
pubmed:issnType
Print
pubmed:volume
56
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
37-41
pubmed:meshHeading
pubmed:year
2007
pubmed:articleTitle
Elemental balance based methodology to establish reaction stoichiometry in environmental modeling.
pubmed:affiliation
EnviroSim Associates Ltd., 7 Innovation Drive, Suite 205, Flamborough, Ontario L9H 7H9, Canada. imre@envirosim.com
pubmed:publicationType
Journal Article