Multi-metallic modelling for biosorption of binary systems

被引：88

作者：

Pagnanelli, F

Esposito, A

Vegliò, F ^{[2
]}

机构：

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

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

[3] Univ Genoa, Dipartimento Ingn Chim Proc GB Bonino, I-16145 Genoa, Italy

来源：

WATER RESEARCH | 2002年 / 36卷 / 16期

关键词：

biosorption; heavy metal; modelling; multi-metal systems; environment;

D O I：

10.1016/S0043-1354(02)00112-4

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

In this paper a specially propagated biomass of Sphaerotilus natans was tested as adsorbent for binary solutions of Cu-Cd. Cu-Pb and Cu-Zn at different equilibrium pH. The experimental results outline the buffering effect of H(+) at low pH. which masks the competition among metals. In each binary system the biomass affinity follows the acidic properties of the heavy metals probably due to an ionic exchange mechanism operating among active sites and metals in solution. The experimental results ere fitted according to an empirical approach with growing complexity that outlines the inadequacy of the predictive models and the non-ideal interactions among metals. (C) 2002 Elsevier Science Ltd. All rights reserved.

引用

页码：4095 / 4105

页数：11

共 31 条

[1] Investigation of simultaneous biosorption of copper(II) and chromium(VI) on dried Chlorella vulgaris from binary metal mixtures:: Application of multicomponent adsorption isotherms [J].