| 一种微生物固结污染体系中Cu~(2+)的研究 |
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| 引用本文： | 钱春香,许燕波,胡黎明,陆兆文.一种微生物固结污染体系中Cu~(2+)的研究[J].环境科学与技术,2011(Z2):33-36. |
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| 作者姓名： | 钱春香 许燕波 胡黎明 陆兆文 |
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| 作者单位： | 东南大学材料科学与工程学院;东南大学江苏省土木工程材料重点实验室 |
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| 基金项目： | 江苏省科技支撑计划项目(BK2010062) |
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| 摘 要： | 利用碳酸盐矿化菌在底物诱导下的酶化作用,分解产生碳酸根离子,矿化固结环境(土壤、水体)当中的游离重金属离子,减少其危险。文章以Cu2+溶液模拟重金属离子污染体系,进行微生物矿化试验,研究过程中发现,铜离子并非转化成为单一的碳酸铜沉积固结,而是生成以Cu2(OH)2CO3为主的混合矿化产物。文中对CuCl2、CuSO4体系中产生的矿化产物进行了XRD、SEM、TG分析,并对生成原因和机理进行了研究。并对这种利用微生物矿化原理来修复重金属污染的方法进行了初步探讨。
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| 关 键 词： | 碱式碳酸铜 游离铜离子 微生物修复 碳酸盐矿化菌 |
Study on Cu2+ in Contaminated System Mineralized by Bacteria |
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| QIAN Chun-xiang,XU Yan-bo,HU Li-ming,LU Zhao-wen.Study on Cu2+ in Contaminated System Mineralized by Bacteria[J].Environmental Science and Technology,2011(Z2):33-36. |
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| Authors: | QIAN Chun-xiang XU Yan-bo HU Li-ming LU Zhao-wen |
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| Institution: | 1,2(1.School of Materials Science and Engineering,Southeast University,Nanjing 211189,China; 2.Jiangsu Key Laboratory of Construction Materials,Southeast University,Nanjing 211189,China) |
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| Abstract: | The heavy metalions were mineralized as stable carbonate to reduce the risk by the CO32-decompounded by the enzyme effect of carbonate-mineralization microbe induced by the substrate.The biomineralization experiment was carried by simulating heavy-metal contaminated system with Cu2+.The copper ion was not mineralized as CuCO3,and the main minerals were Cu2(OH)2CO3.The XRD、 SEM and TG analysis were conducted for the products of different contaminated systems and the mechanism was studied.This method of heavy metal pollution remediation according to the theory of biomineralization was preliminarily studied. |
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| Keywords: | Cu2(OH)2CO3 free Cu2+ microbial remediation carbonate-mineralization microbe |
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