| 六价铬还原菌的筛选及其还原特性研究 |
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| 引用本文： | 陈建春,林玉满,陈祖亮.六价铬还原菌的筛选及其还原特性研究[J].福建师范大学学报(自然科学版),2010,26(2). |
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| 作者姓名： | 陈建春 林玉满 陈祖亮 |
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| 作者单位： | 福建师范大学化学与材料学院,福建,福州,350108 |
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| 基金项目： | 福建师范大学闽江学者人才引进基金项目 |
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| 摘 要： | 从福州污水处理厂的活性污泥中筛选到一菌株,高效抗Cr(Ⅵ),能把水体中高毒的Cr(Ⅵ)还原成低毒的Cr(Ⅲ).研究了该菌的生长条件,探讨了pH值、温度、初始Cr(Ⅵ)质量浓度、接种量及共存金属离子对Cr(Ⅵ)还原的影响.研究结果表明:该菌株为革兰氏阳性杆菌,有较强的还原Cr(Ⅵ)的能力;在有氧、pH8.0、温度30℃及5.0g/L葡萄糖的条件下,20mg/L的Cr(Ⅵ)可完全被还原;且Cr(Ⅵ)的还原不受共存重金属离子的影响.
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| 关 键 词： | 还原菌 筛选 六价铬 生物修复 |
Isolation and Reduction Characteristics of Hexavalent Chromium-reducing Bacteria |
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| CHEN Jian-chun,LIN Yu-man,CHEN Zu-liang.Isolation and Reduction Characteristics of Hexavalent Chromium-reducing Bacteria[J].Journal of Fujian Teachers University(Natural Science),2010,26(2). |
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| Authors: | CHEN Jian-chun LIN Yu-man CHEN Zu-liang |
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| Abstract: | One chromate-reducing strain was isolated from the activated sludge of Fuzhou, and can effectively reduced toxic Cr (Ⅵ) to less toxic Cr (Ⅲ) from wastewater.The optimum conditions of growth of the strain and factors affecting reduction efficiency of Cr (Ⅵ),such as the temperature,the pH value of solution,the concentration of Cr(Ⅵ),inoculation inoculums and the coexistence of metal ions,were studied.The results show that the strain is a gram-positive bacillus and reduction capacity for Cr(Ⅵ) is strong.Cr(Ⅵ) was reduced completely at the concentration of 20 mg/L under the aerobic conditions,pH 8.0,30 ℃ and glucose(5.0 g/L);and reduction efficiency of Cr(Ⅵ) is not affected by coexistence of metal ions. |
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| Keywords: | reducing bacteria isolation hexavalent chromium bioremediation |
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