Linked Life Data

14733394

Source:http://linkedlifedata.com/resource/pubmed/id/14733394

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
11
pubmed:dateCreated
2004-1-21
pubmed:abstractText
In this study, the results of the leaching of metal sulphide concentrate using organic wastes as culture media for Acidithiobacillus ferrooxidans are summarized. These results indicate that the liquid fraction of municipal sewage sludge, paper mill sludge and pig manure, containing 10% (w v(-1)) pulp density of a pyritic mine waste concentrate can support the growth of the leaching bacteria and allow metal solubilization. The inhibition by dissolved organic carbon (DOC) appeared when the concentration in pig manure liquid fraction and sewage sludge filtrate is higher than 180 mg l(-1) and 500 mg l(-1), respectively. However, increase in organic concentration up to 650 mg l(-1) using paper mill sludge supernatant had no inhibitory effect on the bacterial growth. An important decrease of the DOC has been measured during all bioleaching tests. The organic matter was probably consumed by heterotrophic microorganisms activity. The growth rate of the iron-oxidizing bacteria varied from 0.05 to 0.07 h(-1). The dissolution of pyrite (FeS2) in organic waste media led to a yield of Fe solubilization of about 35%. Copper and zinc were also solubilized during the bioleaching tests. The yields of Cu and Zn solubilization ranged from 12 to 24%.
pubmed:language
fre
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Nov
pubmed:issn
0959-3330
pubmed:author
pubmed:issnType
Print
pubmed:volume
24
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1413-23
pubmed:dateRevised
2007-3-21
pubmed:meshHeading
pubmed:year
2003
pubmed:articleTitle
[Bioleaching kinetic of a pyrite mining residue using organic wastes as culture media for Acidithiobacillus ferrooxidans].
pubmed:affiliation
Institut National de la Recherche Scientifique (INRS-ETE), Université du Quebec, 2800, rue Einstein, C.P. 7500, Sainte-Foy, Qc, G1V 4C7, Canada.
pubmed:publicationType
Journal Article, English Abstract, Research Support, Non-U.S. Gov't