| 絮凝酵母吸附Cr(VI)的机理 |
| |
| 引用本文： | 陈丽杰,王志存,葛旭萌,白凤武. 絮凝酵母吸附Cr(VI)的机理[J]. 生物工程学报, 2011, 0(1) |
| |
| 作者姓名： | 陈丽杰 王志存 葛旭萌 白凤武 |
| |
| 作者单位： | 大连理工大学生命科学与技术学院; |
| |
| 基金项目： | 国家自然科学基金(No.20806014)资助~~ |
| |
| 摘 要： | 絮凝酵母SPSC01为酿酒酵母Saccharomyces cerevisiae和粟酒裂殖酵母Schizosaccharomyces pombe的融合菌株,用其吸附水溶液中的重金属Cr(VI),可以大大降低生物吸附的固液分离成本。为了探讨SPSC01菌体絮凝蛋白对Cr(VI)还原吸附的影响,对SPSC01与其亲本菌株的吸附行为进行了比较。结果表明,SPSC01和其具有絮凝性状的亲本S.pombe的Cr(VI)去除速率基本同步,远优于无絮凝性状的亲本S.cerevisiae;达到吸附平衡时,S.pombe、SPSC01和S.cerevisiae对总Cr去除率分别达68.8%、48.6%和37.5%;从而证明了絮凝有利于Cr(VI)的还原、吸附,絮凝蛋白在Cr(VI)的还原吸附过程中起促进作用。通过化学屏蔽方法和傅立叶变换红外光谱(FTIR)分析,对SPSC01菌体表面吸附Cr(VI)的机理进行了研究,结果表明SPSC01菌体表面吸附Cr(VI)起主要作用的基团是氨基、羧基和酰胺基。
|
| 关 键 词： | 絮凝酵母 生物吸附 Cr(VI) 吸附机理 |
Mechanism of Cr(VI) biosorption by flocculating yeast |
| |
| Lijie Chen,Zhicun Wang,Xumeng Ge, Fengwu Bai School of Life Science , Biotechnology,Dalian University of Technology,Dalian ,China. Mechanism of Cr(VI) biosorption by flocculating yeast[J]. Chinese journal of biotechnology, 2011, 0(1) |
| |
| Authors: | Lijie Chen Zhicun Wang Xumeng Ge Fengwu Bai School of Life Science Biotechnology Dalian University of Technology Dalian China |
| |
| Affiliation: | Lijie Chen,Zhicun Wang,Xumeng Ge,and Fengwu Bai School of Life Science and Biotechnology,Dalian University of Technology,Dalian 116024,China |
| |
| Abstract: | The flocculating yeast strain SPSC01 is a fusant strain of Saccharomyces cerevisiae and Schizosaccharomyces pombe.The use of SPSC01 to absorb Cr(VI) from Cr(VI) containing aqueous solution would greatly reduce the cost of post-adsorption separation,since the superior flocculating property of SPSC01 would allow easy separation of the Cr(VI)-biomass from the solution.In order to investigate the effects of flocculating proteins on Cr(VI) reduction and absorption by SPSC01,the absorption behaviors of SPSC01 and... |
| |
| Keywords: | flocculating yeasts biosorption Cr(VI) mechanisms of adsorption |
| 本文献已被 CNKI 等数据库收录！ |
|
