Linked Life Data

10473419

Source:http://linkedlifedata.com/resource/pubmed/id/10473419

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
9
pubmed:dateCreated
1999-12-23
pubmed:abstractText
To investigate the bacteria that are important to phosphorus (P) removal in activated sludge, microbial populations were analyzed during the operation of a laboratory-scale reactor with various P removal performances. The bacterial population structure, analyzed by fluorescence in situ hybridization (FISH) with oligonucleotides probes complementary to regions of the 16S and 23S rRNAs, was associated with the P removal performance of the reactor. At one stage of the reactor operation, chemical characterization revealed that extremely poor P removal was occurring. However, like in typical P-removing sludges, complete anaerobic uptake of the carbon substrate occurred. Bacteria inhibiting P removal overwhelmed the reactor, and according to FISH, bacteria of the beta subclass of the class Proteobacteria other than beta-1 or beta-2 were dominant in the sludge (58% of the population). Changes made to the operation of the reactor led to the development of a biomass population with an extremely good P removal capacity. The biochemical transformations observed in this sludge were characteristic of typical P-removing activated sludge. The microbial population analysis of the P-removing sludge indicated that bacteria of the beta-2 subclass of the class Proteobacteria and actinobacteria were dominant (55 and 35%, respectively), therefore implicating bacteria from these groups in high-performance P removal. The changes in operation that led to the improved performance of the reactor included allowing the pH to rise during the anaerobic period, which promoted anaerobic phosphate release and possibly caused selection against non-phosphate-removing bacteria.
pubmed:commentsCorrections
http://linkedlifedata.com/resource/pubmed/commentcorrection/10473419-1379029, http://linkedlifedata.com/resource/pubmed/commentcorrection/10473419-1688842, http://linkedlifedata.com/resource/pubmed/commentcorrection/10473419-2200342, http://linkedlifedata.com/resource/pubmed/commentcorrection/10473419-2729989, http://linkedlifedata.com/resource/pubmed/commentcorrection/10473419-4009718, http://linkedlifedata.com/resource/pubmed/commentcorrection/10473419-7028991, http://linkedlifedata.com/resource/pubmed/commentcorrection/10473419-7512807, http://linkedlifedata.com/resource/pubmed/commentcorrection/10473419-7544094, http://linkedlifedata.com/resource/pubmed/commentcorrection/10473419-7857797, http://linkedlifedata.com/resource/pubmed/commentcorrection/10473419-8000548, http://linkedlifedata.com/resource/pubmed/commentcorrection/10473419-8386121, http://linkedlifedata.com/resource/pubmed/commentcorrection/10473419-8517747, http://linkedlifedata.com/resource/pubmed/commentcorrection/10473419-8655546, http://linkedlifedata.com/resource/pubmed/commentcorrection/10473419-9049022, http://linkedlifedata.com/resource/pubmed/commentcorrection/10473419-9212435, http://linkedlifedata.com/resource/pubmed/commentcorrection/10473419-9248083
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Sep
pubmed:issn
0099-2240
pubmed:author
pubmed:issnType
Print
pubmed:volume
65
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
4077-84
pubmed:dateRevised
2010-9-10
pubmed:meshHeading
pubmed:year
1999
pubmed:articleTitle
Identification of some of the major groups of bacteria in efficient and nonefficient biological phosphorus removal activated sludge systems.
pubmed:affiliation
Advanced Wastewater Management Centre, Departments of Chemical Engineering and Microbiology and Parasitology, The University of Queensland, Brisbane, Queensland, 4072, Australia.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't