Linked Life Data

19569344

Source:http://linkedlifedata.com/resource/pubmed/id/19569344

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
11
pubmed:dateCreated
2009-7-2
pubmed:abstractText
The bioleaching technique with Acidithiobacillus species has been shown to be an efficient and cost-effective means in removing heavy metals from tannery sludge. However, tannery sludge dissolved organic matter (DOM) is toxic to Acidithiobacillus species and results in decreasing the efficiency of Cr removal from sludge. Here we report the role of an acid-tolerant DOM-degrading heterotrophic microorganism P. spartinae D13 successfully isolated from local tannery sludge in improving activities of A. ferrooxidans LX5 and A. thiooxidans TS6. In tannery sludge DOM-rich liquid culture medium coinoculated with P. spartinae D13 and Acidithiobacillus species, the activities of A. ferrooxidans LX5 and A. thiooxidans TS6 are increased by 33- and 12-fold, respectively. In four successive batches of tannery sludge bioleaching trials by circulating 10% of acidified bioleached sludge, the addition of Pichia spartinae D13 could shorten bioleaching time by 3 days in the first batch and obtained more than 90% of Cr removal efficiency within 6 days. However, the effectiveness of P. spartinae D13 in improving bioleaching maintain only four successive recycle or batches until P. spartinae D13 inoculum is replenished in the fifth batches. Therefore, for enhancing the activity of Acidithiobacillus species in bioleaching system, P. spartinae D13 should be added periodically at a given batch interval.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jun
pubmed:issn
0013-936X
pubmed:author
pubmed:issnType
Print
pubmed:day
1
pubmed:volume
43
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
4151-6
pubmed:meshHeading
pubmed:year
2009
pubmed:articleTitle
An acid-tolerant heterotrophic microorganism role in improving tannery sludge bioleaching conducted in successive multibatch reaction systems.
pubmed:affiliation
Department of Environmental Engineering, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't