| 纳米Fe3O4负载的浮游球衣菌去除Cr(Ⅵ)的研究 |
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| 引用本文： | 关晓辉,秦玉春,秦玉华,尹荣,孙墨杰.纳米Fe3O4负载的浮游球衣菌去除Cr(Ⅵ)的研究[J].环境科学,2007,28(9):2096-2100. |
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| 作者姓名： | 关晓辉 秦玉春 秦玉华 尹荣 孙墨杰 |
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| 作者单位： | 东北电力大学化学工程学院, 吉林132012;东北电力大学化学工程学院, 吉林132012;东北电力大学化学工程学院, 吉林132012;北华大学公共基础部, 吉林132013;东北电力大学化学工程学院, 吉林132012 |
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| 基金项目： | 吉林省科技发展计划资助项目（20050505）;吉林市科技发展计划资助项目（2005-03） |
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| 摘 要： | 以纳米Fe3O4负载浮游球衣菌（Sphaerotilus natans）为复合生物吸附剂,考察了其对Cr(Ⅵ)的吸附性能,并对生物吸附机理进行了初步研究.结果表明,pH值是影响复合生物吸附剂吸附Cr(Ⅵ)的主要因素,吸附的最佳pH为2～3;用此复合生物吸附剂对Cr(Ⅵ)进行吸附,其单位吸附量为0.0217 mmol/g.用HCl对其进行再生,再生率在90％以上;—CONH2和—NH—是菌体吸附Cr(Ⅵ)的主要活性基团,静电吸引是复合生物吸附剂吸附Cr(Ⅵ)的主要机理之一.
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| 关 键 词： | 浮游球衣菌 纳米Fe3O4粒子 复合生物吸附剂 Cr(Ⅵ) 废水处理 |
| 文章编号： | 0250-3301（2007）09-2096-05 |
| 收稿时间： | 2006/10/8 0:00:00 |
| 修稿时间： | 2006-10-082006-12-13 |
Removing Cr(VI) by composite biosorbent of nano FeO4/Sphaerotilus natans |
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| GUAN Xiao-hui,QIN Yu-chun,QIN Yu-hu,YIN Rong and SUN Mo-jie.Removing Cr(VI) by composite biosorbent of nano FeO4/Sphaerotilus natans[J].Chinese Journal of Environmental Science,2007,28(9):2096-2100. |
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| Authors: | GUAN Xiao-hui QIN Yu-chun QIN Yu-hu YIN Rong and SUN Mo-jie |
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| Institution: | 1. School of Chemistry Engineering, Northeast Dianli University, Jilin 132012, China; 2. Department of Common Courses, Beihua University, Jilin 132013, China |
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| Abstract: | The process of biosorption and the adsorbing mechanisms of Fe3 O4/Sphaerotilus natans to Cr(VI) were studied. The experiment results showed that pH value was main influencing factors on adsorption to Cr(VI). In the range of pH 2 to 3, the adsorbance of the composite biosorbent to Cr(VI) is 0.0217 mmol/g. The regeneration efficiency is 90% when the composite biosorbent was regenerated by HCl solution. --CONH2-- and --NH-- were principal activated groups of composite biosorbent. Cr(VI) can primarily combine with the surface of Fe3O4/Sphaerotilus natans by electrostatic attraction. |
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