Adsorption of Methylene Blue on Chestnut Shell-Based Activated Carbon: Calculation of Thermodynamic Parameters for Solid-Liquid Interface Adsorption

被引：6
作者：
Kong, Lingjian [1 ]
Zhang, Mingyang [1 ]
机构：
[1] Shandong Jianzhu Univ, Sch Thermal Engn, Jinan 250101, Peoples R China
来源：
CATALYSTS | 2022年 / 12卷 / 08期
关键词：
chestnut shell-based activated carbon; thermodynamic parameters; equilibrium constant; adsorption potential; DYE REMOVAL; WASTE; EFFICIENCY; ANILINE;
D O I：
10.3390/catal12080813
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：
Chestnut shell-based activated carbon was prepared with chestnut shell as the raw material and ZnCl2 as the activating agent. Based on thermodynamic parameters, the adsorption behavior of methylene blue (MB) on chestnut shell-based activated carbon was studied, and the effect of temperature on the thermodynamic parameters and adsorption behavior was investigated. The Langmuir equilibrium constant (K-L) and the standard equilibrium constant (K-0) were used to calculate the thermodynamic parameters, respectively. Comparative analysis showed that spontaneous adsorption (Delta G(0) < 0) was more compatible with the standard equilibrium constant (K-0). Furthermore, the thermodynamic parameters at 30, 40 and 50 degrees C were measured, and the adsorption potential was investigated and calculated. Eventually, the mechanism of the adsorption process was determined. It was concluded that the adsorption process mainly involved chemical adsorption, which indicated that MB adsorption was caused by the force of the chemical bond.
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页数：10
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