| 微波预处理面包酵母对锶的吸附研究 |
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| 引用本文： | 黄小军,胡文远,杨定明,刘勋,邓洪权.微波预处理面包酵母对锶的吸附研究[J].环境科学学报,2011,31(12):2624-2628. |
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| 作者姓名： | 黄小军 胡文远 杨定明 刘勋 邓洪权 |
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| 作者单位： | 1. 西南科技大学生物质材料教育部工程研究中心,绵阳,621010
2. 西南科技大学生物质材料教育部工程研究中心,绵阳621010／西南科技大学材料科学与工程学院,绵阳621010 |
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| 摘 要： | 采用微波预处理的面包酵母作为生物吸附剂吸附处理Sr2＋,研究了其吸附特性、生物吸附动力学、吸附平衡过程和吸附机理.实验结果表明,微波预处理能有效提高酵母的吸附效能.酵母对Sr2＋吸附10min即可达到平衡,吸附过程可以很好地用准二级动力学方程来描述（R2=0.9999）,平衡吸附量qe为4.69mg·g^-1,二级吸附...
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| 关 键 词： | 微波 酵母菌 生物吸附 Sr2+ |
| 收稿时间： | 2011/2/20 0:00:00 |
| 修稿时间： | 6/8/2011 10:43:08 AM |
Biosorption of strontium with baker's yeast pretreated by microwave |
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| HUANG Xiaojun,HU Wenyuan,YANG Dingming,LIU Xun and DENG Hongquan.Biosorption of strontium with baker's yeast pretreated by microwave[J].Acta Scientiae Circumstantiae,2011,31(12):2624-2628. |
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| Authors: | HUANG Xiaojun HU Wenyuan YANG Dingming LIU Xun and DENG Hongquan |
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| Institution: | Engineering Research Center of Biomass Materials, Ministry of Education, Southwest University of Science and Technology, Mianyang 621010,1. Engineering Research Center of Biomass Materials, Ministry of Education, Southwest University of Science and Technology, Mianyang 621010; 2. School of Material Science and Engineering, Southwest University of Science and Technology, Mianyang 621010,Engineering Research Center of Biomass Materials, Ministry of Education, Southwest University of Science and Technology, Mianyang 621010,1. Engineering Research Center of Biomass Materials, Ministry of Education, Southwest University of Science and Technology, Mianyang 621010;2. School of Material Science and Engineering, Southwest University of Science and Technology, Mianyang 621010 and 1. Engineering Research Center of Biomass Materials, Ministry of Education, Southwest University of Science and Technology, Mianyang 621010;2. School of Material Science and Engineering, Southwest University of Science and Technology, Mianyang 621010 |
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| Abstract: | The biosorption of Sr2+ with baker's yeast pretreated by microwave was investigated, including the biosorption characteristics, the biosorption kinetics and the biosorption equilibrium. It was shown that the yeast's biosorption capacity of Sr2+ can be effectively improved by microwave pretreatment. The sorption equilibrium was quickly reached in 10 minutes, and the biosorption kinetics can be well described by the pseudo second-order equation (R2=0.9999). The kinetic parameters qe and k2 were 4.69 mg·g-1 and 0.29 g·mg-1·min-1, respectively. The biosorption equilibrium was in accord with Langmuir models, and the maximum biosorptive capacity was 10.57 mg·g-1. The structure of the yeast remained undestroyed in the processes of microwave pretreatment and biosorption. FTIR analysis indicated that some adsorptive peaks of yeast after biosorption shifted and the intensity changed. |
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| Keywords: | microwave baker's yeast biosorption Sr2+ |
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