Adsorptions of high concentration malachite green by two activated carbons having different porous structures

被引：76
作者：
Akmil-Basar, C
Önal, Y
Kiliçer, T
Eren, D
机构：
[1] Inonu Univ, Fac Engn, Dept Chem Engn, TR-44280 Malatya, Turkey
[2] Inonu Univ, Fac Engn, Dept Min Engn, TR-44280 Malatya, Turkey
来源：
JOURNAL OF HAZARDOUS MATERIALS | 2005年 / 127卷 / 1-3期
关键词：
adsorption; activated carbon; chemical activation; malachite green; kinetics;
D O I：
10.1016/j.jhazmat.2005.06.025
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
The adsorption of malachite green (MG) from aqueous solution by two different adsorbents (CZn5, PETNa8) were studied. Adsorbents were prepared from pine sawdust and polyethyleneterephatalate (PET) by chemical activation with ZnCl2 and NaOH, respectively. The adsorption was carried out in a batch system as a function of dye concentration, pH and contact time. Both adsorbents were found to be very effective in removing the dye at high concentration with adsorption percentage in the order of CZn5 > PETNa8. The pH of dye solution in the range of 6-10, was found favorable for the removal of malachite green by using the two adsorbents at high concentrations. Equilibrium times were 120 and 90 min for CZN5 and PETNa8, respectively. Kinetics of removal MG was studied using Lagergren equation and diffusion phenomena was analyzed using Weber and Morris intraparticle diffusion plots. It was also showed that the adsorption isotherm followed Langmuir model. (c) 2005 Elsevier B.V. All rights reserved.
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页码：73 / 80
页数：8
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