Adsorption of Methylene Blue from Aqueous Solution by Crosslinked Chitosan/Bentonite Composite

被引：105

作者：

Bulut, Yasemin ^{[1
]}

Karaer, Hatice ^{[1
]}

机构：

[1] Dicle Univ, Fac Sci, Dept Chem, TR-21280 Diyarbakir, Turkey

来源：

JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY | 2015年 / 36卷 / 01期

关键词：

Adsorption; clay; composite; methylene blue; super absorbent; HEAVY-METAL IONS; DYE REMOVAL; CATIONIC DYES; CONGO-RED; CHITOSAN; KINETICS; EQUILIBRIUM; ADSORBENT; MECHANISM; DESIGN;

D O I：

10.1080/01932691.2014.888004

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

This article reports the application of a crosslinked chitosan/bentonite composite as adsorbent for the removal of a cationic dye, methylene blue (MB), from aqueous solution. Batch experiments were conducted to study the effects of contact time, initial concentration of adsorbate (50-200 mgL(-1)), temperature (298-313 K), agitation speed (90-150 rpm), and pH (2-10) on adsorption. The equilibrium experimental data were analyzed by the Freundlich and Langmuir models. The kinetic data obtained with different initial concentration and temperature were analyzed using a pseudo-first-order, pseudo-second-order, and intraparticle diffusion equations. Maximum adsorption capacity (Q(m)) was calculated at different temperatures (298, 308, and 313 K) as 95.24, 97.09, and 142.86 mg g(-1), respectively. The results showed that this novel adsorbent had a high adsorption capacity, making it suitable for use in the treatment MB-enriched wastewater.

引用

页码：61 / 67

页数：7

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