THE SORPTIVE PERFORMANCE OF MICROORGANISMS-ZEOLITE SYSTEMS TO REMOVE Cu2+, Zn2+, Cd2+, Fe2+ AND Pb2+

被引：0

作者：

Peter, Anca ^{[1
]}

Marian, Monica ^{[1
]}

Nicula, Camelia ^{[1
]}

Mihaly-Cozmuta, Leonard ^{[1
]}

Mihaly-Cozmuta, Anca ^{[1
]}

Indrea, Emil ^{[2
]}

机构：

[1] N Univ Baia Mare, Fac Sci, Dept Biol Chem, RO-430083 Baia Mare, Romania

[2] Natl Inst Res & Dev Isotop & Mol Technol, RO-400293 Cluj Napoca, Romania

来源：

REVUE ROUMAINE DE CHIMIE | 2011年 / 56卷 / 09期

关键词：

metal ions; sorption kinetics modeling; microorganisms and microorganisms-zeolite systems; HEAVY-METAL REMOVAL; BIOSORPTION; CLINOPTILOLITE; POPULATIONS; SUPPORTS; CARBON; WATER; IONS;

D O I：

暂无

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The adsorption of Cu2+, Zn2+, Cd2+, Fe2+ and Pb2+ on three types of systems (microorganisms, microorganisms-zeolite, and zeolite) has been investigated. Experimental data have been analyzed by kinetic models including the pseudo-first order, the pseudo-second order and Elovich equations. The film and pore diffusion coefficients were also calculated. The studied ions are desorbed from the microorganisms-systems, after 72 hours, excepting Pb2+ which remains adsorbed on bacteria and yeasts systems. The pseudo-second-order equation provides a good fitting to the experimental data points obtained from metal ions adsorption on microorganisms-zeolite and zeolite systems. The zeolite modified with fungi is a more efficient adsorbent than bacteria-zeolite, yeast-zeolite or zeolite for Cd2+. Cu2+, Zn2+ and Fe2+ were adsorbed with the highest rate by the yeast-zeolite system and Pb2+ was adsorbed more efficiently by the bacteria-zeolite system. The adsorption of Cu2+, Cd2+ and Pb2+ onto microorganism-zeolite systems occurs by chemisorption.

引用

页码：847 / 852

页数：6

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