Spent tea leaves: A new non-conventional and low-cost adsorbent for removal of basic dye from aqueous solutions

被引：414

作者：

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

机构：

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

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2009年 / 161卷 / 2-3期

关键词：

Spent tea leaves; Adsorption; Isotherm; Methylene blue; Kinetics; GRANULAR ACTIVATED CARBON; BAGASSE-FLY-ASH; METHYLENE-BLUE; MALACHITE GREEN; CATIONIC DYE; REACTIVE DYE; ACID DYE; ADSORPTION-KINETICS; AGRICULTURAL WASTE; PALM ASH;

D O I：

10.1016/j.jhazmat.2008.04.019

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

In the present study, spent tea leaves (STL) were used as a new non-conventional and low-cost adsorbent for the cationic dye (methylene blue) adsorption in a batch process at 30 degrees C. Equilibrium sorption isotherms and kinetics were investigated. The experimental data were analyzed by the Langmuir, Freundlich and Temkin models of adsorption. The adsorption isotherm data were fitted well to the Langmuir isotherm and the monolayer adsorption capacity was found to be 300.052 mg/g at 30 degrees C. The kinetic data obtained at different initial concentrations were analyzed using pseud-first-order, pseudo-second-order and intraparticle diffusion equations. The results revealed that the spent tea leaves, being waste, have the potential to be used as a low-cost adsorbent for the removal of methylene blue from aqueous Solutions. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：753 / 759

页数：7

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