Sorption of Pentachlorophenol from Aqueous Solution by Acid Activated Bentonite: A comparative study

被引：2
|
作者：
Hadoudi, Nouhaila [1 ]
Charki, Asmae [2 ]
EL Ouarghi, Hossain [2 ]
Mourabit, Fouad [1 ]
Salhi, Amin [1 ]
Amhamdi, Hassan [1 ]
Ahari, M'hamed [1 ]
机构：
[1] Abdelmalek Essaadi Univ, Appl Chem Unit, FSTH, Tetouan, Morocco
[2] Abdelmalek Essaadi Univ, Water & Environm Management Unit, LSA, ENSAH, Tetouan, Morocco
来源：
EGYPTIAN JOURNAL OF CHEMISTRY | 2023年 / 66卷 / 06期
关键词：
Adsorption; Bentonite; Kinetics; Isotherms; Pentachlorophenol; HEALTH-RISK; ADSORPTION; REMOVAL; PHENOL; CHLOROPHENOLS; DEGRADATION; PB(II); WATER; CLAY;
D O I：
10.21608/EJCHEM.2022.143001.6255
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Batch measurements were conducted to assess the adsorption performance of raw and acid-activated bentonite with various operating conditions, including pH (3-11), initial PCP concentration (30-1000 mg/l), contact time (10-180 min), and temperature (25-65 & DEG;C). Fourier Transform Infrared spectroscopy (FT-IR), X-ray diffraction (XRD), and scanning electron microscopy were used to study the structure and morphology of bentonite. The adsorption isotherms in the system were described using the Langmuir and Freundlich models. The system's thermodynamic characteristics were also examined; including Gibbs free energy, enthalpy, and entropy of the adsorption processes. According to the thermodynamic analysis, the adsorption is exothermic. The kinetic of adsorption is best described by a pseudo-second-order expression than a first order model. The experiment results are compatible with the Freundlich equation
引用
收藏
页码：353 / 361
页数：9
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