| 新型生物吸附剂去除水中六价铬的研究 |
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| 引用本文： | 陶颖,王竞,周集体. 新型生物吸附剂去除水中六价铬的研究[J]. 上海环境科学, 2000, 19(12): 572-574 |
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| 作者姓名： | 陶颖 王竞 周集体 |
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| 作者单位： | 大连理工大学环境科学与工程系,大连 |
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| 基金项目： | 教育部跨世纪人才培养计划基金(1998)资助。 |
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| 摘 要： | 以Ｐｓｅｕｄｏｍｏｎａｓ ｓｐ．Ｇｘ４－１发酵培养得到的细菌胞外聚合物作吸附剂，研究其对水中重金属Ｃｒ（ＶＩ）的吸附，吸附剂对Ｃｒ（ＶＩ）吸附的最佳ｐＨ初值为０．５～２．０。Ｃｒ（ＶＩ）的吸附分三个阶段：５ｍｉｎ达７５％的快速吸附阶段；１０～４０ｍｉｎ达表现一级反应动力学吸附阶段；５０ｍｉｎ以的趋于平衡，吸附过程符合Ｆｒｅｕｎｄｌｉｃｈ和Ｌａｎｇｍｕｉｒ吸附等温方程。
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| 关 键 词： | 生物吸附剂 六价铬 细菌胞外聚合物 废水处理 |
| 修稿时间： | 2000-06-09 |
Study on a Novel Biosorbent for Removal of Chromium (VI)Ionsfrom Aqueous Solution |
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| Tao Ying,Wang Jing,Zhou Jiti. Study on a Novel Biosorbent for Removal of Chromium (VI)Ionsfrom Aqueous Solution[J]. Shanghai Environmental Science, 2000, 19(12): 572-574 |
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| Authors: | Tao Ying Wang Jing Zhou Jiti |
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| Abstract: | Chromium(VI) biosorption by biosorbent from pseudomonas sp. GX4-1 has been studied. The optimum initial pH of Cr(VI) ion solution was found as 0.5 ~ 2.0. The biosorption process may be divided into the following phases from C,(VI) kinetics data:1) fast biosorption phase with 75% metal ions uptaken within 5 min; 2)biosorption from 10min to 40min in accordance with first-order kinetics model; and3) followed by equilibrium. Biosorption process was corresponding with Freundlich and Langmuir model. |
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| Keywords: | Biosorption Chromium(VI) Exopolymer |
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