Applicability of the various adsorption models of three dyes adsorption onto activated carbon prepared waste apricot
Applicability of the various adsorption models of three dyes adsorption onto activated carbon prepared waste apricot
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DOI：
10.1016/j.jhazmat.2005.11.055
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发表时间：
2006-07-31
影响因子：
13.6
通讯作者：
Basar, Canan Akmil
中科院分区：
文献类型：
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作者：
Basar, Canan Akmil
在这项研究中，通过用ZNCL2化学激活的化学激活，从废物杏子中制备了活性炭（WA11ZN5）。活性炭的BET表面积确定为1060 m（2）/g。活性炭包括微孔和中孔。微孔和中孔面积的百分比确定为36％和74％，微孔和中孔的百分比分别为19％和81％。已经研究了通过吸附的废水溶液去除三种染料，亚甲基蓝（MB），孔雀石绿（Mg）和晶体紫（CV）的WA11ZN5的能力。 WA11ZN5的吸附能力以孔雀石绿色（Mg）>甲基蓝（MB）> Crystal Violet（CV）下降。实验测量了三种染料在活化碳上吸附的平衡等温线。使用线性性相关系数在不同的温度下，通过Langmiur，Freundlich，Freundlich，Dubinin-Redushkevich（D-R），Temkin，Frumkin，Harkins-Jura，Harkins-Jura，Halsey和Henderson方程进行了分析。已经确定了每个等温线的特征参数。根据温度评估模型和等温常数。发现Langmiur和Frumkin方程最能代表三个Dye-Wa11Zn5系统的平衡数据。 （c）2005 Elsevier B.V.保留所有权利。
In this study, activated carbon (WA11Zn5) was prepared from waste apricot, which is waste in apricot plants in Malatya, by chemical activation with ZnCl2. BET surface area of activated carbon is determined as 1060 m(2)/g. Activated carbon includes both micro and mesopores. Percentages of micropores and mesopores area are determined 36% and 74%, percentage of micropores and mesopores volume is 19% and 81%, respectively. The ability of WA11Zn5, to remove three dyes, methylene blue (MB), malachite green (MG), and crystal violet (CV), from effluent solutions by adsorption has been studied. The adsorption capacities of WA11Zn5 decreases in the order malachite green (MG) > methylene blue (MB) > crystal violet (CV). Equilibrium isotherms for the adsorption of three dyes on activated carbon were measured experimentally. Results were analyzed by the Langmiur, Freundlich, Dubinin-Redushkevich (D-R), Temkin, Frumkin, Harkins-Jura, Halsey and Henderson equation using linearized correlation coefficient at different temperature. The characteristic parameters for each isotherm have been determined. Models and the isotherm constant were evaluated depending on temperature. Langmiur and Frumkin equation is found to best represent the equilibrium data for three dye-WA11Zn5 systems. (c) 2005 Elsevier B.V. All rights reserved.