Removal of Cd(II) onto Raphanus sativus peels biomass: equilibrium, kinetics, and thermodynamics

被引：42

作者：

Ashraf, Muhammad Aqeel ^{[1
,3
]}

Rehman, Muhammad Abdur ^{[2
]}

Alias, Yatimah ^{[1
]}

Yusoff, Ismail ^{[3
]}

机构：

[1] Univ Malaya, Dept Chem, Kuala Lumpur 50603, Malaysia

[2] Bahauddin Zakariya Univ, Inst Chem Sci, Div Analyt Chem, Multan 60800, Pakistan

[3] Univ Malaya, Dept Geol, Kuala Lumpur 50603, Malaysia

来源：

DESALINATION AND WATER TREATMENT | 2013年 / 51卷 / 22-24期

关键词：

Raphanus sativus; Bioadsorbent; Kinetics; Thermodynamics; Equilibrium; Cadmium (II); AQUEOUS-SOLUTION; ACTIVATED CARBON; BIOSORPTION; ADSORPTION; IONS; CADMIUM(II); SORPTION; PB(II); COPPER(II); ISOTHERMS;

D O I：

10.1080/19443994.2012.752333

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Raphanus sativus peels (RSP) biomass for the adsorptive removal of Cadmium (II) has been studied. The effect of different experimental parameter like pH, temperature, contact time, and initial concentration has been reported. The equilibrium adsorption data were subjected to different adsorption isotherms (Langmuir, Freundlich, Dubinin-Radushkevich, Temkin, Flory-Huggins isotherm, and Brunauer, Emmet and Teller isotherms), for kinetic studies pseudo-first-order, pseudo-second-order, Banghams's model, and intraparticle diffusion kinetic models were applied. The experimental results indicated that the adsorption of Cd(II) followed monolayer adsorption model and pseudo-second-order kinetics. The change in thermodynamic parameters like free energy (G degrees), enthalpy (H degrees), and entropy (S degrees) was also evaluated. It was found that the RSP exhibits good adsorption capacity for Cadmium (II) from aqueous solution.

引用

页码：4402 / 4412

页数：11

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