Biological leaching of heavy metals from a contaminated soil by Aspergillus niger
文献类型：期刊论文
| 作者 | Ren, WX; Li, PJ; Geng, Y; Li, XJ; Li, PJ, Chinese Acad Sci, Inst Appl Ecol, 72 Wenhua Rd, Shenyang 110016, Peoples R China |
| 刊名 | JOURNAL OF HAZARDOUS MATERIALS
 |
| 出版日期 | 2009 |
| 卷号 | 167期号:1-3页码:164-169 |
| 关键词 | Aspergillus Niger Bioleaching Contaminated Soil Heavy Metal |
| ISSN号 | 0304-3894 |
| 英文摘要 | Bioleaching of heavy metals from a contaminated soil in an industrial area using metabolites, mainly weak organic acids, produced by a fungus Aspergillus niger was investigated. Batch experiments were performed to compare the leaching efficiencies of one-step and two-step processes and to determine the transformation of heavy metal chemical forms during the bioleaching process. After the one or two-step processes, the metal removals were compared using analysis of variance (ANOVA) and least-significance difference (LSD). A. niger exhibits a good potential in generating a variety of organic acids effective for metal solubilisation. Results showed that after the one-step process, maximum removals of 56%, 100%, 30% and 19% were achieved for copper, cadmium, lead and zinc, respectively. After the two-step process, highest removals of 97.5% Cu, 88.2% Cd, 26% Pb, and 14.5% Zn were obtained. Results of sequential extraction showed that organic acids produced by A. niger were effective in removing the exchangeable, carbonate, and Fe/Mn oxide fractions of Cu, Cd, Pb and Zn; and after both processes the metals remaining in the soil were mainly bound in stable fractions. Such a treatment procedure indicated that leaching of heavy metals from contaminated soil using A. niger has the potential for use in remediation of contaminated soils. (C) 2009 Published by Elsevier B.V. |
| 学科主题 | Engineering ; Environmental ; Civil ; Engineering ; Environmental Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000267267000022 |
| 资助机构 | National Basic Research Program of China [2004CB418506]; Key Program of Knowledge Innovation ; Chinese Academy of Sciences [KZCXI-YW-06-03]; National High Technology Research and Development Program of China (863 Program) [2007AA061101]; Welfare Program for Environmental Protection [200809047]; Chinese Academy of Science's |
| 公开日期 | 2011-09-23 |
| 源URL | [http://210.72.129.5/handle/321005/54111]  |
| 专题 | 沈阳应用生态研究所_沈阳应用生态研究所 |
| 通讯作者 | Li, PJ, Chinese Acad Sci, Inst Appl Ecol, 72 Wenhua Rd, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ren, WX,Li, PJ,Geng, Y,et al. Biological leaching of heavy metals from a contaminated soil by Aspergillus niger[J]. JOURNAL OF HAZARDOUS MATERIALS,2009,167(1-3):164-169. |
| APA | Ren, WX,Li, PJ,Geng, Y,Li, XJ,&Li, PJ, Chinese Acad Sci, Inst Appl Ecol, 72 Wenhua Rd, Shenyang 110016, Peoples R China.(2009).Biological leaching of heavy metals from a contaminated soil by Aspergillus niger.JOURNAL OF HAZARDOUS MATERIALS,167(1-3),164-169. |
| MLA | Ren, WX,et al."Biological leaching of heavy metals from a contaminated soil by Aspergillus niger".JOURNAL OF HAZARDOUS MATERIALS 167.1-3(2009):164-169. |
入库方式： OAI收割
来源：沈阳应用生态研究所
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