Metal speciation and pH effect on Pb, Cu, Zn and Cd biosorption onto Sphaerotilus natans:: Langmuir-type empirical model

被引：198

作者：

Pagnanelli, F

Esposito, A

Toro, L

Vegliò, F ^{[1
]}

机构：

[1] Univ Aquila, Dipartimento Chim Ingn Chim & Mat, I-67040 Laquila, Italy

[2] Univ Roma La Sapienza, Fac SMFN, Dipartimento Chim, I-00185 Rome, Italy

来源：

WATER RESEARCH | 2003年 / 37卷 / 03期

关键词：

heavy metal; biosorption; speciation; modelling; Langmuir;

D O I：

10.1016/S0043-1354(02)00358-5

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Biosorption data of lead, copper, zinc and cadmium onto Sphaerotilus natans at different equilibrium pH (3-5 units) were here reported and analysed. Experimental results outlined the positive effect of pH increase on pollutant uptake and also the biomass affinity series (Pb > Cu > Zn > Cd) reflecting the hydrolytic properties of metals. An original empirical model was proposed to represent the effect of pH on heavy metal biosorption inserting q(max) vs. pH empirical functions into the classical Langmuir isotherm. (C) 2002 Elsevier Science Ltd. All rights reserved.

引用

页码：627 / 633

页数：7

共 26 条

[1] A comparative study of copper(II) biosorption on Ca-alginate, agarose and immobilized C-vulgaris in a packed-bed column [J].