Malachite Green Adsorption onto Chitosan Coated Bentonite Beads: Isotherms, Kinetics and Mechanism

被引：110

作者：

Ngah, Wan Saime Wan ^{[1
]}

Ariff, Noorul Farhana Md ^{[1
]}

Hashim, Azhan ^{[2
]}

Hanafiah, Megat Ahmed Kamal Megat ^{[1
,2
]}

机构：

[1] Univ Sains Malaysia, Sch Chem Sci, Minden 11800, Penang, Malaysia

[2] Univ Teknol MARA Pahang, Fac Sci Appl, Pahang, Malaysia

来源：

CLEAN-SOIL AIR WATER | 2010年 / 38卷 / 04期

关键词：

Adsorption; Chitosan coated bentonite; Kinetics; Isotherm; Malachite green; DIVALENT METAL-IONS; AQUEOUS-SOLUTIONS; ACTIVATED CARBON; WASTE-WATER; EQUILIBRIUM ISOTHERM; METHYLENE-BLUE; INDUSTRY WASTE; REMOVAL; DYE; SORPTION;

D O I：

10.1002/clen.200900251

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The removal of Malachite green (MG) from aqueous solutions by cross-linked chitosan coated bentonite (CCB) beads was investigated and the CCB beads were characterized by Fourier Transform Infrared (FTIR) spectroscopy, scanning electron microscopy (SEM) coupled with energy dispersive spectroscopy (EDS) and X-ray diffraction (XRD) analysis. Solubility and swelling tests were performed in order to determine the stability of the CCB beads in acidic solution, basic solution and distilled water. The amount of MG adsorbed was shown to be influenced by the initial pH of the solution, contact time and the initial MG concentration. A kinetic study indicated that a pseudo-second-order model agreed well with the experimental data. From the Langmuir isotherm model, the maximum adsorption capacity of MG was found to be 435.0 mg g(-1). Desorption tests were carried out at different concentrations of EDTA, H2SO4 and NaOH. However, all desorbing solutions showed zero recovery of MG at all concentrations.

引用

页码：394 / 400

页数：7

共 34 条

[1] Removal of aquaculture therapeutants by carbon adsorption 1. Equilibrium adsorption behaviour of single components [J].

Aitcheson, SJ ;

Arnett, J ;

Murray, KR ;

Zhang, J .

AQUACULTURE, 2000, 183 (3-4) :269-284

[2] Sorption of malachite green on chitosan bead [J].

Bekci, Zehra ;

Oezveri, Cosan ;

Seki, Yoldas ;

Yurdakoc, Kadir .

JOURNAL OF HAZARDOUS MATERIALS, 2008, 154 (1-3) :254-261

[3] Removal of hexavalent chromium from wastewater using a new composite chitosan biosorbent [J].

Boddu, VM ;

Abburi, K ;

Talbott, JL ;

Smith, ED .

ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2003, 37 (19) :4449-4456

[4] Adsorption of malachite green onto bentonite:: Equilibrium and kinetic studies and process design [J].

Bulut, Emrah ;

Oezacar, Mahmut ;

Sengil, I. Ayhan .

MICROPOROUS AND MESOPOROUS MATERIALS, 2008, 115 (03) :234-246

[5] Adsorption of tannic acid, humic acid, and dyes from water using the composite of chitosan and activated clay [J].

Chang, MY ;

Juang, RS .

JOURNAL OF COLLOID AND INTERFACE SCIENCE, 2004, 278 (01) :18-25

[6] Surface modification of a granular activated carbon by citric acid for enhancement of copper adsorption [J].

Chen, JP ;

Wu, SN ;

Chong, KH .

CARBON, 2003, 41 (10) :1979-1986

[7] Removal of CI Basic Green 4 (Malachite Green) from aqueous solutions by adsorption using cyclodextrin-based adsorbent: Kinetic and equilibrium studies [J].

Crini, Gregorio ;

Peindy, Harmel Ndongo ;

Gimbert, Frederic ;

Robert, Capucine .

SEPARATION AND PURIFICATION TECHNOLOGY, 2007, 53 (01) :97-110

[8]

Freundlich H, 1906, Z PHYS CHEM-STOCH VE, V57, P385

[9] Basic dye (methylene blue) removal from simulated wastewater by adsorption sawdust: a timber using Indian Rosewood industry waste [J].

Garg, VK ;

Amita, M ;

Kumar, R ;

Gupta, R .

DYES AND PIGMENTS, 2004, 63 (03) :243-250

[10] Removal of malachite green dye from aqueous solution by adsorption using agro-industry waste:: a case study of Prosopis cineraria [J].

Garg, VK ;

Kumar, R ;

Gupta, R .

DYES AND PIGMENTS, 2004, 62 (01) :1-10

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