Equilibrium sorption isotherm for lead (Pb) ions on hydrogen peroxide modified rice hulls

被引：0

作者：

Aluyor, E. O. ^{[1
]}

Oboh, I. O. ^{[2
]}

Obahiagbon, K. O. ^{[1
]}

机构：

[1] Univ Benin, Dept Chem Engn, Benin, Nigeria

[2] Univ Uyo, Dept Chem & Petr Engn, Uyo, Nigeria

来源：

INTERNATIONAL JOURNAL OF THE PHYSICAL SCIENCES | 2009年 / 4卷 / 08期

关键词：

Modified; Langmuir; Freundlich; hydrogen peroxide; rice hulls; lead; METAL-IONS; HUSK ASH;

D O I：

暂无

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Modified rice hulls system for removing Pb (II) from aqueous solutions has been investigated. Rice hulls are agricultural waste product. The experimental condition was the modification of the rice hulls (sorbent) with different concentrations of hydrogen peroxide solution. The experimental results were fitted to the Langmuir and Freundlich isotherms to obtain the characteristic parameters of each model. The Langmuir isotherm was found to well represent the results. The maximum sorption capacities of various concentrations of hydrogen peroxide modified rice hulls were 2.57, 3.15, 5.15, 8.57, 10.97 and 11.88 mg/g for 0.1, 0.3, 0.6, 0.9, 1.2 and 1.5 M hydrogen peroxide solution respectively. It was noted that increasing the concentration for modification resulted in a higher metal uptake per unit weight of the modified rice hulls.

引用

页码：423 / 427

页数：5

共 14 条

[1]

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