| 嗜酸硫氧化菌株的分离及其在污泥生物脱毒中的应用 |
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| 引用本文： | 周顺桂,周立祥,王世梅. 嗜酸硫氧化菌株的分离及其在污泥生物脱毒中的应用[J]. 环境科学研究, 2003, 16(5): 41-44 |
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| 作者姓名： | 周顺桂 周立祥 王世梅 |
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| 作者单位： | 南京农业大学,资源与环境学院,江苏,南京,210095 |
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| 基金项目： | 国家自然科学基金资助项目(20177016)，江苏省自然科学基金资助项目(BK2001072) |
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| 摘 要： | 以元素硫为底物,采用选择性液体培养基加富培养继以稀释平板法直接从污泥中分离出一株嗜酸硫氧化菌株SS-3.该菌株能将硫粉或硫代硫酸盐氧化成硫酸或硫酸盐,但不能氧化二价铁.序批式生物淋滤试验结果表明,接种该菌株并添加硫作为底物可有效加速污水污泥中重金属的溶出.经过15 d的生物淋滤,Cr,Cu,Zn的去除率可分别达到66.8%,95.4%,100%.
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| 关 键 词： | 嗜酸硫氧化菌 分离 污泥脱毒 生物淋滤 重金属 |
| 文章编号： | 1001-6929(2003)05-0041-04 |
| 收稿时间： | 2003-01-06 |
Isolation of an Acidophilic Sulfur-Oxidizing Strain SS-3 and Its Application on Heavy Metal Bioleaching from Sewage Sludge |
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| Affiliation: | College of Resources and Environmental Sciences,Nanjing Agricultural University,Nanjing210095,China |
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| Abstract: | An acidophilic sulfur|oxidizing strain SS-3 was isolated from sewage sludge through enrichment in the S0 synthentic salts medium followed by inoculation of the appropriate serial dilutant in synthetic salts|agar plate medium.The isolate metabolized S0 or S2O32- to SO42- during growth but could not oxidize Fe2+ into Fe3+.Results from batch experiments showed that the inoculation of SS-3 and the addition of S 0 could accelerate the solubilization of Cr,Cu,Zn from sewage sludge.After 15 d of bioleaching,the following metal removal efficiencies were obtained:Cr 66.8%,Cu 95.4% and Zn 100%. |
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| Keywords: | sulfur-oxidizing bacterium isolation sludge detoxicating bioleaching heavy metal |
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