Characterization of a metal resistant Pseudomonas sp isolated from uranium mine for its potential in heavy metal (Ni2+, Co2+, Cu2+, and Cd2+) sequestration
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作者:
Choudhary, Sangeeta
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Indian Inst Technol, Dept Biotechnol, Kharagpur 721302, W Bengal, IndiaIndian Inst Technol, Dept Biotechnol, Kharagpur 721302, W Bengal, India
Choudhary, Sangeeta
[1
]
Sar, Pinaki
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Indian Inst Technol, Dept Biotechnol, Kharagpur 721302, W Bengal, IndiaIndian Inst Technol, Dept Biotechnol, Kharagpur 721302, W Bengal, India
Sar, Pinaki
[1
]
机构:
[1] Indian Inst Technol, Dept Biotechnol, Kharagpur 721302, W Bengal, India
Heavy metal sequestration by a multimetal resistant Pseudomonas strain isolated from a uranium mine was characterized for its potential application in metal bioremediation. 16S rRNA gene analysis revealed phylogenetic relatedness of this isolate to Pseudomonas fluorescens. Metal uptake by this bacterium was monophasic, fast saturating, concentration and pH dependent with maximum loading of 1048 nmol Ni2+ followed by 845 nmol Co2+, 828 nmol Cu2+ and 700 nmol Cd2+ mg(-1) dry wt. Preferential metal deposition in cell envelope was confirmed by TEM and cell fractionation. FTIR spectroscopy and EDX analysis revealed a major role of carboxyl and phosphoryl groups along with a possible ion exchange mechanism in cation binding. Binary system demonstrated selective metal binding affinity in the order of Cu2+ > Ni2+ > Co2+ > Cd2+. A comparison with similar metal uptake reports considering live bacteria strongly indicated the superiority of this strain in metal sequestration, which could be useful for developing efficient metal removal system. (C) 2008 Elsevier Ltd. All rights reserved.
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S China Univ Technol, Guangzhou Higher Educ Mega Ctr, Sch Environm & Energy, Guangzhou 510006, Guangdong, Peoples R ChinaS China Univ Technol, Guangzhou Higher Educ Mega Ctr, Sch Environm & Energy, Guangzhou 510006, Guangdong, Peoples R China
Tan, Ping
Sun, Jian
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Guangdong Univ Technol, Shcool Environm Sci & Engn, Guangzhou 510006, Guangdong, Peoples R ChinaS China Univ Technol, Guangzhou Higher Educ Mega Ctr, Sch Environm & Energy, Guangzhou 510006, Guangdong, Peoples R China
Sun, Jian
Hu, Yongyou
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S China Univ Technol, Guangzhou Higher Educ Mega Ctr, Sch Environm & Energy, Guangzhou 510006, Guangdong, Peoples R China
S China Univ Technol, Coll Light Ind & Food Sci, State Key Lab Pulp & Paper Engn, Guangzhou 510640, Guangdong, Peoples R ChinaS China Univ Technol, Guangzhou Higher Educ Mega Ctr, Sch Environm & Energy, Guangzhou 510006, Guangdong, Peoples R China
Hu, Yongyou
Fang, Zheng
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S China Univ Technol, Guangzhou Higher Educ Mega Ctr, Sch Environm & Energy, Guangzhou 510006, Guangdong, Peoples R ChinaS China Univ Technol, Guangzhou Higher Educ Mega Ctr, Sch Environm & Energy, Guangzhou 510006, Guangdong, Peoples R China
Fang, Zheng
Bi, Qi
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S China Univ Technol, Guangzhou Higher Educ Mega Ctr, Sch Environm & Energy, Guangzhou 510006, Guangdong, Peoples R ChinaS China Univ Technol, Guangzhou Higher Educ Mega Ctr, Sch Environm & Energy, Guangzhou 510006, Guangdong, Peoples R China
Bi, Qi
Chen, Yuancai
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S China Univ Technol, Guangzhou Higher Educ Mega Ctr, Sch Environm & Energy, Guangzhou 510006, Guangdong, Peoples R China
S China Univ Technol, Coll Light Ind & Food Sci, State Key Lab Pulp & Paper Engn, Guangzhou 510640, Guangdong, Peoples R ChinaS China Univ Technol, Guangzhou Higher Educ Mega Ctr, Sch Environm & Energy, Guangzhou 510006, Guangdong, Peoples R China
Chen, Yuancai
Cheng, Jianhua
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S China Univ Technol, Guangzhou Higher Educ Mega Ctr, Sch Environm & Energy, Guangzhou 510006, Guangdong, Peoples R China
S China Univ Technol, Coll Light Ind & Food Sci, State Key Lab Pulp & Paper Engn, Guangzhou 510640, Guangdong, Peoples R ChinaS China Univ Technol, Guangzhou Higher Educ Mega Ctr, Sch Environm & Energy, Guangzhou 510006, Guangdong, Peoples R China
机构:
Univ Hong Kong, Dept Civil Engn, Pokfulam, Hong Kong, Peoples R China
Jinan Univ, Sch Environm, Guangzhou 510632, Guangdong, Peoples R China
Jinan Univ, Guangzhou Key Lab Environm Exposure & Hlth, Guangzhou 510632, Guangdong, Peoples R ChinaUniv Hong Kong, Dept Civil Engn, Pokfulam, Hong Kong, Peoples R China
Wang, Fei
Lu, Xingwen
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Univ Hong Kong, Dept Civil Engn, Pokfulam, Hong Kong, Peoples R China
Guangdong Univ Technol, Res Ctr Environm Hlth & Pollut Control, Guangzhou 510006, Guangdong, Peoples R China
Guangdong Univ Technol, Sch Environm Sci & Engn, Guangzhou 510006, Guangdong, Peoples R ChinaUniv Hong Kong, Dept Civil Engn, Pokfulam, Hong Kong, Peoples R China
Lu, Xingwen
Li, Xiao-yan
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Univ Hong Kong, Dept Civil Engn, Pokfulam, Hong Kong, Peoples R ChinaUniv Hong Kong, Dept Civil Engn, Pokfulam, Hong Kong, Peoples R China