Isolation of Phosphate-Solubilizing Bacteria and Characterization of Their Effects on Lead Immobilization(<Special Issue>International Symposium: Challenges to Soil Degradation Towards Sustaining Life and Environment, Tokyo Metropolitan University Symposi
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概要
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Phosphate compounds have been used for the immobilization of heavy metals in contaminated environments. In this study, phosphate-solubilizing bacteria (PSB) were isolated from phosphate-amended and lead (Pb)-contaminated soils, and their effects on phosphate-induced immobilization of Pb were examined. Two isolated PSB strains, CS2-B1 and SM1-B1, which were putatively identified as Pantoea sp. and Enterobacter sp., respectively, were able to solubilize phosphorous (P) from insoluble P sources through the release of organic acids. Strains CS2-B1 and SM1-B1 solubilized 479mg/L and 293mg/L, respectively, of P from tricalcium phosphate. The addition of either CS2-B1 or SM1-B1 and various P amendments into Pb-contaminated soil reduced the NH_4NO_3-extractable Pb concentration, with a 51% increase in the immobilization of Pb observed in rock phosphate-amended soil containing SM1-Blover control soil lacking added PSB. This study indicates that PSB increase the solubility of P in soil, thereby leading to effective immobilization of Pb in contaminated soils.
- 日本ペドロジー学会の論文
著者
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Megharaj Mallavarapu
Centre For Environmental Risk Assessment And Remediation (cerar) University Of South Australia
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Bolan Nanthi
Centre For Environmental Risk Assessment And Remediation (cerar) University Of South Australia
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Naidu Ravi
Centre For Environmental Risk Assessment And Remediation (cerar) University Of South Australia
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Park Jinhee
Centre For Environmental Risk Assessment And Remediation (cerar) University Of South Australia
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Bolan Nanthi
Centre For Environmental Risk Assessment And Remediation University Of South Australia:cooperative R
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Naidu Ravi
Centre For Environmental Risk Assessment And Remediation University Of South Australia:cooperative R
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Mora Maria
Centre For Environmental Risk Assessment And Remediation University Of South Australia:cooperative R
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Park Jinhee
Centre For Environmental Risk Assessment And Remediation University Of South Australia:cooperative R
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Megharaj Mallavarapu
Centre For Environmental Risk Assessment And Remediation University Of South Australia:cooperative R
関連論文
- Isolation of Phosphate-Solubilizing Bacteria and Characterization of Their Effects on Lead Immobilization
- Solute Interactions in Soils in Relation to the Bioavailability and Environmental Remediation of Heavy Metals and Metalloids
- Bacterial-Assisted Immobilization of Lead in Soils : Implications for Remediation
- Bacterial-Assisted Immobilization of Lead in Soils : Implications for Remediation(Symposium 3.5.1 Heavy Metal Contaminated Soils,International Symposium: Soil Degradation Control, Remediation, and Reclamation, Tokyo Metropolitan University
- Isolation of Phosphate-Solubilizing Bacteria and Characterization of Their Effects on Lead Immobilization(International Symposium: Challenges to Soil Degradation Towards Sustaining Life and Environment, Tokyo Metropolitan University Symposi
- Solute Interactions in Soils in Relation to the Bioavailability and Environmental Remediation of Heavy Metals and Metalloids(International Symposium: Challenges to Soil Degradation Towards Sustaining Life and Environment, Tokyo Metropolitan