Removal of insecticide carbofuran from aqueous solutions by banana stalks activated carbon

被引：82

作者：

Salman, J. M. ^{[1
]}

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

机构：

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

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2010年 / 176卷 / 1-3期

关键词：

Carbofuran; Adsorption; Activated carbon; Banana stalks; Regeneration; DESORPTION CHARACTERISTICS; ADSORPTION-KINETICS; PESTICIDES; 2,4-D; EQUILIBRIUM; ISOTHERMS; HERBICIDE; CARBAMATE; SORPTION; DYE;

D O I：

10.1016/j.jhazmat.2009.11.107

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, activated carbon was prepared from banana stalks (BSAC) waste to remove the insecticide carbofuran from aqueous solutions. The effects of contact time, initial carbofuran concentration, solution pH and temperature (30, 40 and 50 degrees C) were investigated. Adsorption isotherm, kinetics and thermodynamics of carbofuran on BSAC were studied. Equilibrium data were fitted to the Langmuir, Freundlich and Temkin isotherm models and the data best represented by the Langmuir isotherm. Thermodynamic parameters such as standard enthalpy (Delta H degrees), standard entropy (Delta S-degrees) and standard free energy (Delta G degrees) were evaluated. Regeneration efficiency of spent BSAC was studied using ethanol as a solvent. The efficiency was found to be in the range of 96.97-97.35%. The results indicated that the BSAC has good regeneration and reusability characteristics and can be used as alternative to present commercial activated carbon. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：814 / 819

页数：6

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