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首页> 外文期刊>Journal of Environmental Management >Concomitant rock phosphate dissolution and lead immobilization by phosphate solubilizing bacteria (Enterobacter sp.)
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Concomitant rock phosphate dissolution and lead immobilization by phosphate solubilizing bacteria (Enterobacter sp.)

机译:磷酸盐溶解细菌(肠杆菌属)伴随磷酸盐的溶解和铅的固定

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摘要

This paper examines the potential value of phosphate solubilizing bacteria (Enterobacter cloacae) in the dissolution of rock phosphate (RP) and subsequent immobilization of lead (Pb) in both bacterial growth medium and soils. Enterobacter sp. showed resistance to Pb and the bacterium solubilized 17.5% of RP in the growth medium. Entrobacter sp. did not enhance Pb immobilization in solution because of acidification of bacterial medium, thereby inhibiting the formation of P-induced Pb precipitation. However, in the case of soil, Enterobacter sp. increased Pb immobilization by 6.98,25.6 and 32.0% with the RP level of 200, 800 and 1600 mg P/kg, respectively. The immobilization of Pb in Pb-spiked soils was attributed to pyromorphite formation as indicated by XRD analysis. Inoculation of phosphate solubilizing bacteria with RP in soil can be used as an alternative technique to soluble P compounds which can cause eutrophication of surface water.
机译:本文研究了溶解磷酸盐的细菌(阴沟肠杆菌)在溶解磷酸盐岩(RP)以及随后将铅(Pb)固定在细菌生长培养基和土壤中的潜在价值。肠杆菌表现出对Pb的抗性,细菌在生长培养基中溶解了RP的17.5%。肠杆菌由于细菌培养基的酸化作用,因此不能增强溶液中铅的固定化,从而抑制了P诱导的Pb沉淀的形成。但是,对于土壤而言,肠杆菌属。 RP水平分别为200、800和1600 mg P / kg时,铅的固定率分别提高了6.98、25.6和32.0%。 XRD分析表明,在掺Pb的土壤中固定Pb归因于焦亚铁矿的形成。在土壤中用RP溶解磷酸盐的细菌可作为可溶性P化合物的替代技术,可引起地表水富营养化。

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  • 来源
    《Journal of Environmental Management》 |2011年第4期|p.1115-1120|共6页
  • 作者单位

    Centre for Environmental Risk Assessment and Remediation, University of South Australia, Mawson Lakes, SA 5095, Australia,Cooperative Research Centre for Contamination Assessment and Remediation of the Environment, Adelaide, SA 5095, Australia;

    Centre for Environmental Risk Assessment and Remediation, University of South Australia, Mawson Lakes, SA 5095, Australia,Cooperative Research Centre for Contamination Assessment and Remediation of the Environment, Adelaide, SA 5095, Australia;

    Centre for Environmental Risk Assessment and Remediation, University of South Australia, Mawson Lakes, SA 5095, Australia,Cooperative Research Centre for Contamination Assessment and Remediation of the Environment, Adelaide, SA 5095, Australia;

    Centre for Environmental Risk Assessment and Remediation, University of South Australia, Mawson Lakes, SA 5095, Australia,Cooperative Research Centre for Contamination Assessment and Remediation of the Environment, Adelaide, SA 5095, Australia;

  • 收录信息 美国《科学引文索引》(SCI);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    phosphate solubilizing bacteria; pb resistance; pb immobilization; rock phosphate; pyromorphite;

    机译:磷酸盐增溶细菌;耐铅性铅固定磷矿次晶石;

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