REMOVAL OF CD(II) FROM WASTE-WATER BY ADSORPTION ON WASTE FE(III)/CR(III) HYDROXIDE

被引：289

作者：

NAMASIVAYAM, C

RANGANATHAN, K

机构：

[1] Environmental Chemistry Division, Department of Environmental Sciences, Bharathiar University, Coimbatore

来源：

WATER RESEARCH | 1995年 / 29卷 / 07期

关键词：

CADMIUM(II); WASTE FE(III)/CR(III) HYDROXIDE; ADSORPTION ISOTHERMS; ADSORPTION DYNAMICS; DESORPTION; THERMODYNAMICAL PARAMETERS; WASTE-WATER;

D O I：

10.1016/0043-1354(94)00320-7

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Effect of initial metal ion concentration, agitation time, temperature and pH on Cd(II) adsorption by ''waste'' Fe(III)/Cr(III) hydroxide was investigated in batch mode studies. The equilibrium data could be described well by the Langmuir and Freundlich isotherm equations. The Lagergren rate constants of adsorption are reported. The intraparticle diffusion of Cd(II) through pores in the adsorbent was shown to be the main rate limiting step. Desorption of Cd(II) was 70% at pH 3.80. The studies showed that the ''waste'' Fe(III)/Cr(III) hydroxide can be used as an efficient adsorbent material for Cd(II) removal from wastewater.

引用

页码：1737 / 1744

页数：8

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