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Open AccessArticle

Adsorption of Phenol on Commercial Activated Carbons: Modelling and Interpretation

Department of Environmental Science and Engineering, Sichuan University, Chengdu 610065, China
Department of Environmental Engineering, Chengdu University, Chengdu 610106, China
Author to whom correspondence should be addressed.
Int. J. Environ. Res. Public Health 2020, 17(3), 789;
Received: 26 December 2019 / Revised: 17 January 2020 / Accepted: 24 January 2020 / Published: 28 January 2020
(This article belongs to the Special Issue Water Quality Improvement and Ecological Restoration)
Adsorption by activated carbons (AC) is an effective option for phenolic wastewater treatment. Three commercial AC, including coal-derived granular activated carbons (GAC950), coal-derived powdered activated carbons (PAC800), and coconut shell-derived powdered activated carbons (PAC1000), were utilized as adsorbent to study its viability and efficiency for phenol removal from wastewater. Pseudo-first order, pseudo-second order, and the Weber–Morris kinetic models were used to find out the kinetic parameters and mechanism of adsorption process. Further, to describe the equilibrium isotherms, the experimental data were analyzed by the Langmuir and Freundlich isotherm models. According to the experimental results, AC presented a micro/mesoporous structure, and the removal of phenol by AC was affected by initial phenol concentration, contact time, pH, temperature, and humic acid (HA) concentration. The pseudo-second order kinetic and Langmuir models were found to fit the experimental data very well, and the maximum adsorption capacity was 169.91, 176.58, and 212.96 mg/g for GAC950, PAC800, and PAC1000, respectively, which was attributed to differences in their precursors and physical appearance. Finally, it was hard for phenol to be desorbed in a natural environment, which confirmed that commercial AC are effective adsorbents for phenol removal from effluent wastewater. View Full-Text
Keywords: activated carbons; adsorbent; phenol; adsorption activated carbons; adsorbent; phenol; adsorption
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MDPI and ACS Style

Xie, B.; Qin, J.; Wang, S.; Li, X.; Sun, H.; Chen, W. Adsorption of Phenol on Commercial Activated Carbons: Modelling and Interpretation. Int. J. Environ. Res. Public Health 2020, 17, 789.

AMA Style

Xie B, Qin J, Wang S, Li X, Sun H, Chen W. Adsorption of Phenol on Commercial Activated Carbons: Modelling and Interpretation. International Journal of Environmental Research and Public Health. 2020; 17(3):789.

Chicago/Turabian Style

Xie, Bingxin; Qin, Jihong; Wang, Shu; Li, Xin; Sun, Hui; Chen, Wenqing. 2020. "Adsorption of Phenol on Commercial Activated Carbons: Modelling and Interpretation" Int. J. Environ. Res. Public Health 17, no. 3: 789.

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