Effects of calcium competition on lead sorption by palm kernel fibre

被引：29
作者：
Ho, YS
Ofomaja, AE
机构：
[1] Taipei Med Univ, Sch Publ Hlth, Taipei 11014, Taiwan
[2] Univ Benin, Fac Sci, Dept Chem, Benin, Edo State, Nigeria
来源：
JOURNAL OF HAZARDOUS MATERIALS | 2005年 / 120卷 / 1-3期
关键词：
adsorption; lead; palm kernel fibre; kinetics; intraparticle diffusion;
D O I：
10.1016/j.jhazmat.2004.12.027
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
The kinetics of sorption of a mono-solute of lead ions and of a bi-solute of lead and calcium ions onto palm kernel fibre was investigated in a batch system. The experimental data were analysed based on an intraparticle diffusion equation and a pseudo-second-order mechanism, in both the mono- and bi-solute sorption systems, in order to predict the rate constant of sorption, the equilibrium capacity, and the initial sorption rate. The results indicate that the sorption mechanism is described by a pseudo-second-order equation. Intraparticle diffusion was significant in the lower-concentration systems. In addition, a modified intraparticle diffusion equation was applied to the sorption systems. (c) 2005 Elsevier B.V. All fights reserved.
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收藏
页码：157 / 162
页数：6
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