Characterization of copper bioreduction and biosorption by a highly copper resistant bacterium isolated from copper-contaminated vineyard soil

The Science of the Total Environment
Robson AndreazzaBenedict C Okeke

Abstract

Copper is an essential but toxic heavy metal that negatively impacts living systems at high concentration. This study presents factors affecting copper bioremoval (bioreduction and biosorption) by a highly copper resistant monoculture of Pseudomonas sp. NA and copper bioremoval from soil. Seven bacteria resistant to high concentration of Cu(II) were isolated from enrichment cultures of vineyard soils and mining wastes. Culture parameters influencing copper bioreduction and biosorption by one monoculture isolate were studied. The isolate was identified by 16S rRNA gene sequence analysis as a Pseudomonas sp. NA (98% similarity to Pseudomonas putida, Pseudomonas plecoglossicida and other Pseudomonas sp.). The optimal temperature for growth was 30 degrees C and bioremoval of Cu(II) was maximal at 35 degrees C. Considerable growth of the isolate was observed between pH 5.0 and 8.0 with the highest growth and biosorption recorded at pH 6.0. Maximal bioreduction was observed at pH 5.0. Cu(II) bioremoval was directly proportional to Cu(II) concentration in media. Pseudomonas sp. NA removed more than 110mg L(-1) Cu(II) in water within 24h through bioreduction and biosorption at initial concentration of 300mg L(-1). In cultures amended w...Continue Reading

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Citations

Feb 5, 2013·DNA and Cell Biology·Fatemeh ElahianSeyed Abbas Mirzaei
Dec 3, 2013·Brazilian Journal of Microbiology : [publication of the Brazilian Society for Microbiology]·R F SilvaR Andreazza
Nov 26, 2010·Biological Trace Element Research·Robson AndreazzaFlávio A O Camargo
Sep 29, 2011·Biological Trace Element Research·Robson AndreazzaFlávio A O Camargo
Feb 19, 2013·Biological Trace Element Research·Robson AndreazzaFlávio A O Camargo
Sep 11, 2012·Environmental Science and Pollution Research International·Baoguo ZhangJiping Shi
May 21, 2013·Environmental Science and Pollution Research International·Ting Wang, Hongwen Sun
Oct 13, 2010·Chemosphere·Robson AndreazzaFlávio Anastácio de Oliveira Camargo
May 1, 2012·International Journal of Systematic and Evolutionary Microbiology·Liqiong LiGejiao Wang
Apr 24, 2012·Environmental Pollution·K A MackieE Kandeler
Mar 10, 2015·Comptes rendus biologies·Imen Challougui FatnassiSalwa Harzalli Jebara
Jun 5, 2015·Journal of Applied Microbiology·A M BraudT Lebeau
Jan 11, 2020·Frontiers in Microbiology·Yimeng ZhangBaorong Hou
Jan 20, 2021·Journal of Environmental Management·Alireza FathollahiErnest O Nnadi
Jan 1, 2021·Chemosphere·Alireza FathollahiAlan P Newman

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