酵母菌对Cr(Ⅵ)的生物吸附作用的二苯卡巴肼光度法研究  

On Yeast Biosorption of Chromium(Ⅵ) by Spectrophotometry

作　　者：石杰[1] 张宗培[1] 韩润平[1] 

机构地区：[1]郑州大学化学化工学院,河南郑州450052

出　　处：《分析测试学报》2001年第4期22-25,共4页Journal of Instrumental Analysis

基　　金：河南省科技攻关资助项目(981160416)

摘　　要：用二苯卡巴肼显色 -光度法研究了啤酒酵母对Cr(Ⅵ)吸附作用。当pH=2时吸附效果最好 ,振荡30min吸附基本可达平衡。常见离子Na +、Ca2 +、Mg2 +、C1 -等对吸附影响不大。在一定浓度范围酵母菌对Cr(Ⅵ)吸附符合Freundlich和Langmuir等温吸附模型。随酵母菌和Cr(Ⅵ)接触时间的增加 ,Cr(Ⅵ)被还原为Cr(Ⅲ)。The biosorption of Cr(Ⅵ) on brewers' yeast was studied by spectrophotometry with diphenyl_carbazide. The adsorption quantity of Cr(Ⅵ) in solution on the yeast maximizes at pH=2, and the adsorption equilibrium is achieved under vibration in 30 min. Common ions, such as Na+, Ca2+, Mg2+, Cl- have little effect on the biosorption. Freundlich and Langmuir isothermal adsorption models are obeyed for the biosorption. Experiments showed that Cr(Ⅵ) could be reduced to Cr(Ⅲ) by brewers' yeast as contact time of Cr(Ⅵ) with the yeast increased.

关 键 词：二苯卡巴肼 分光光度法 酵母菌 生物吸附 铬离子 电镀行业 电镀废水 废水处理 

分 类 号：X781.101[环境科学与工程—环境工程] X132