Mechanism of Pb(II) biosorption by Saccharomyces Cerevisiae

被引：6

作者：

Dong Limin ^{[1
]}

Du Juan ^{[1
]}

Bai Xin ^{[2
]}

Yu Naili ^{[3
]}

Fan Chunhui ^{[1
]}

Zhang Ying ^{[1
]}

机构：

[1] Northeast Agr Univ, Sch Resource & Environm, Harbin, Peoples R China

[2] Harbin Environm Monitoring Cent Stn, Harbin 150076, Heilongjiang, Peoples R China

[3] Harbin Environm Protect Bur, Harbin 150076, Heilongjiang, Peoples R China

来源：

2009 INTERNATIONAL CONFERENCE ON ENVIRONMENTAL SCIENCE AND INFORMATION APPLICATION TECHNOLOGY,VOL I, PROCEEDINGS | 2009年

关键词：

biosorption mechanism; saccharomyces cerevisiae; Pb(II); SEM-EDX; FTIR; XPS;

D O I：

10.1109/ESIAT.2009.450

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

The mechanism of Ph (II) biosorption by Saccharmyces Cerevisiae is investigated by scanning electron microscopy-energy dispersive x-ray (SEM-EDX) sepectroscopy,fourier transform infrared(FTIR) spectroscopy and x-ray photoelectron spectroscopy(XPS). The SEM figures show that the shapes of Saccharomyces Cerevisiae cells doesn't obviously change after the adsorption,but there are many "spots" on the cell walls,which indicates the cell walls of Saccharomyces Cerevisiae play an important role in adsorption process. The EDX spectrum analysis helps to substantiate the interactive adsorption between Ph (II) and K (I) on the cell surfaces.FTIR analysis indicates that COOH, C = O, C-O and N-H are the main active binding sites for the process of adsorption. XPS analysis further reveals that Ph (II) combines with some active functional groups containing the elements of C,N,O and P. Therefore, the mechanism of saccharomyces cerevisiae adsorption on Pb(II) has mainly resulted from both the ion exchange and the surface complexation.

引用

页码：712 / +

页数：2

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