Malachite green adsorption by rattan sawdust: Isotherm, kinetic and mechanism modeling

被引：358

作者：

Hameed, B. H. ^{[1
]}

El-Khaiary, M. I. ^{[2
]}

机构：

[1] Univ Sains Malaysia, Sch Chem Engn, Nibong Tebal 14300, Penang, Malaysia

[2] Univ Alexandria, Fac Engn, Dept Chem Engn, Alexandria 21544, Egypt

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2008年 / 159卷 / 2-3期

关键词：

Adsorption; Batch processing; Modeling; Malachite green; Rattan sawdust;

D O I：

10.1016/j.jhazmat.2008.02.054

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 work, the adsorption of malachite green (MG) on rattan sawdust (RSD) was studied at 30 degrees C. The results indicated that RSD can be used as a low-cost adsorbent for the removal of MG dye from aqueous solutions. Equilibrium data were analyzed by two isotherms, namely the Freundlich isotherm and the Langmuir isotherm. The best fit to the data was obtained with the Langmuir isotherm. The monolayer adsorption capacity of RSD was found to be 62.71 mg/g. The adsorption kinetics can be predicted by the pseudo-first-order model. The mechanism of adsorption was also studied. It was found that for a short time period the rate of adsorption is controlled by film diffusion. However, at longer adsorption times, pore-diffusion controls the rate of adsorption. The amount adsorbed on the outer surface was estimated from the time where film-diffusion stops controlling the adsorption rate. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：574 / 579

页数：6

共 28 条

[1] Adsorption of direct dye on palm ash: Kinetic and equilibrium modeling [J].

Ahmad, A. A. ;

Hameed, B. H. ;

Aziz, N. .

JOURNAL OF HAZARDOUS MATERIALS, 2007, 141 (01) :70-76

[2] Mass transfer processes in the adsorption of basic dyes by peanut hulls [J].

Allen, SJ ;

Gan, Q ;

Matthews, R ;

Johnson, PA .

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 2005, 44 (06) :1942-1949

[3] INTRAPARTICLE DIFFUSION OF A BASIC DYE DURING ADSORPTION ONTO SPHAGNUM PEAT [J].

ALLEN, SJ ;

MCKAY, G ;

KHADER, KYH .

ENVIRONMENTAL POLLUTION, 1989, 56 (01) :39-50

[4] THE EXCHANGE ADSORPTION OF IONS FROM AQUEOUS SOLUTIONS BY ORGANIC ZEOLITES .2. [J].

BOYD, GE ;

ADAMSON, AW ;

MYERS, LS .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1947, 69 (11) :2836-2848

[5] Non-conventional low-cost adsorbents for dye removal: A review [J].

Crini, G .

BIORESOURCE TECHNOLOGY, 2006, 97 (09) :1061-1085

[6] Kinetics and mechanism of adsorption of methylene blue from aqueous solution by nitric-acid treated water-hyacinth [J].

El-Khaiary, Mohammad I. .

JOURNAL OF HAZARDOUS MATERIALS, 2007, 147 (1-2) :28-36

[7] Biosorption of Astrazone Blue basic dye from an aqueous solution using dried biomass of Baker's yeast [J].

Farah, Joseph Y. ;

El-Gendy, Nour Sh. ;

Farahat, Laila A. .

JOURNAL OF HAZARDOUS MATERIALS, 2007, 148 (1-2) :402-408

[8]

Freundlich H. M., 1906, J PHYS CHEM, V57, P385

[9] Equilibrium and kinetic studies of methyl violet sorption by agricultural waste [J].

Hameed, B. H. .

JOURNAL OF HAZARDOUS MATERIALS, 2008, 154 (1-3) :204-212

[10] Utilization of durian (Durio zibethinus Murray) peel as low cost sorbent for the removal of acid dye from aqueous solutions [J].

Hameed, B. H. ;

Hakimi, H. .

BIOCHEMICAL ENGINEERING JOURNAL, 2008, 39 (02) :338-343

← 1 2 3 →