Removal of Cd2+ from aqueous solution with carbon modified aluminum-pillared montmorillonite

被引：31

作者：

Yu, Ranbo ^{[2
]}

Wang, Shengdong ^{[2
]}

Wang, Dan ^{[1
]}

Ke, Jiajun ^{[1
]}

Xing, Xianran ^{[2
]}

Kumada, Nobuhiro ^{[3
]}

Kinomura, Nobukazu ^{[3
]}

机构：

[1] Chinese Acad Sci, Inst Proc Engn, State Key Lab Multi Phase & Complex Syst, Beijing 100190, Peoples R China

[2] Univ Sci & Technol, Dept Phys Chem, Beijing 100083, Peoples R China

[3] Yamanashi Univ, Fac Engn, Ctr Crystal Sci & Technol, Yamanashi 4008511, Japan

来源：

CATALYSIS TODAY | 2008年 / 139卷 / 1-2期

基金：

中国国家自然科学基金;

关键词：

Pillared montmorillonite; Carbon modification; Cd2+ removal; Kinetics;

D O I：

10.1016/j.cattod.2008.08.015

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

To clarify the effect and mechanism of pillared montmorillonite on Cd2+ adsorption in aqueous solution, carbon modified alumina-pillared montmorillonite has been prepared by incorporating hydroxyl-aluminum cations into the lamellar spaces of montmorillonite via ion-exchanging together with polyvinyl alcohol (PVA), followed by calcining in N-2 atmosphere. The pillared montmorillonites were characterized by XRD, FT-IR, TG-DTA and sorption isotherms. Uptake of Cd2+ from aqueous solution was analyzed by means of atomic absorption spectroscopy. The experimental results indicated that the pillared montmorillonites show better properties on both Cd2+ adsorption and desorption than the unpillared, which made them the promising recycling Cd2+ adsorbents. Moreover, adjusting the pH value of the solution could control the adsorbed amount of Cd2+. The adsorption process fitted the second-order kinetics well, and the two isotherm equations due to Freundlich and Langmuir showed good fits with the experimental data. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：135 / 139

页数：5

共 30 条

[1] Adsorption of heavy metals on Na-montmorillonite. Effect of pH and organic substances [J].

Abollino, O ;

Aceto, M ;

Malandrino, M ;

Sarzanini, C ;

Mentasti, E .

WATER RESEARCH, 2003, 37 (07) :1619-1627

[2] The adsorption of Cu(II) ions on bentonite - a kinetic study [J].

Al-Qunaibit, MH ;

Mekhemer, WK ;

Zaghloul, AA .

JOURNAL OF COLLOID AND INTERFACE SCIENCE, 2005, 283 (02) :316-321

[3]

Altin O, 1999, J CHEM TECHNOL BIOT, V74, P1131, DOI 10.1002/(SICI)1097-4660(199912)74:12&lt

[4]

1131::AID-JCTB158&gt

[5]

3.0.CO

[6]

2-0

[7] Removal of heavy metals from waste waters by natural and Na-exchanged bentonites [J].

Alvarez-Ayuso, E ;

García-Sánchez, A .

CLAYS AND CLAY MINERALS, 2003, 51 (05) :475-480

[8] The influence of temperature on the adsorption of cadmium(II) and cobalt(II) on kaolinite [J].

Angove, MJ ;

Johnson, BB ;

Wells, JD .

JOURNAL OF COLLOID AND INTERFACE SCIENCE, 1998, 204 (01) :93-103

[9] Low-cost adsorbents for heavy metals uptake from contaminated water: a review [J].

Babel, S ;

Kurniawan, TA .

JOURNAL OF HAZARDOUS MATERIALS, 2003, 97 (1-3) :219-243

[10] A review of potentially low-cost sorbents for heavy metals [J].

Bailey, SE ;

Olin, TJ ;

Bricka, RM ;

Adrian, DD .

WATER RESEARCH, 1999, 33 (11) :2469-2479

← 1 2 3 →