Application of bifunctional Saccharomyces cerevisiae to remove lead(II) and cadmium(II) in aqueous solution

被引：39

作者：

Zhang, Yunsong ^{[1
]}

Liu, Weiguo ^{[2
]}

Zhang, Li ^{[1
]}

Wang, Meng ^{[1
]}

Zhao, Maojun ^{[1
]}

机构：

[1] Sichuan Agr Univ, Coll Life & Sci, Dept Chem, Yaan 625014, Peoples R China

[2] Sichuan Agr Univ, Agron Coll, Wenjiang 611130, Peoples R China

来源：

APPLIED SURFACE SCIENCE | 2011年 / 257卷 / 23期

关键词：

Saccharomyces cerevisiae; Nano-Fe3O4; EDTAD; Adsorption; Functionalization; MODIFIED YEAST; BIOSORPTION; ADSORPTION; BIOMASS; NANOPARTICLES; IONS; EQUILIBRIUM; TITRATION; KINETICS; SAWDUST;

D O I：

10.1016/j.apsusc.2011.06.026

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A magnetic adsorbent, EDTAD-functionalized Saccharomyces cerevisiae, has been synthesized to behave as an adsorbent for heavy metal ions by adjusting the pH value of the aqueous solution to make carboxyl and amino groups protonic or non-protonic. The bifunctional Saccharomyces cerevisiae (EMS) were used to remove lead(II) and cadmium(II) in solution in a batch system. The results showed that the adsorption capacity of the EMS for the heavy metal ions increased with increasing solution pH, and the maximum adsorption capacity (88.16 mg/g for Pb2+, 40.72 mg/g for Cd2+) at 10 degrees C was found to occur at pH 5.5 and 6.0, respectively. The adsorption process followed the Langmuir isotherm model. The regeneration experiments revealed that the EMS could be successfully reused. (C) 2011 Elsevier B. V. All rights reserved.

引用

页码：9809 / 9816

页数：8

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