Equilibrium, kinetic and thermodynamic studies for adsorption of BTEX onto Ordered Mesoporous Carbon (OMC)

Journal of Hazardous Materials
Mas Iwan KonggidinataDaniel Dianchen Gang

Abstract

Chemical and petrochemical industries produce substantial amounts of wastewater everyday. This wastewater contains organic pollutants such as benzene, toluene, ethylbenzene and xylenes (BTEX) that are toxic to human and aquatic life. Ordered Mesoporous Carbon (OMC), the adsorbent that possesses the characteristics of an ideal adsorbent was investigated to understand its properties and suitability for BTEX removal. Adsorption isotherms, adsorption kinetics, the effects of initial BTEX concentrations and temperatures on the adsorption process were studied. The OMCs were characterized using surface area and pore size analyzer, transmission electron microscopy (TEM), elemental analysis, thermogravimetric analysis (TGA) and fourier transform infrared spectroscopy (FTIR). The results suggested that the Langmuir Isotherm and Pseudo-Second-Order Models described the experimental data well. The thermodynamic parameters, Gibbs free energy (ΔG°), the enthalpy change (ΔH°) and the entropy change (ΔS°) of adsorption indicated that the adsorption processes were physical, endothermic, and spontaneous. In addition, OMC had 27% higher overall adsorption capacities compared to granular activated carbon (GAC).

Citations

Mar 7, 2019·Environmental Science and Pollution Research International·Fernanda Ribeiro Dos SantosLisbeth Zelayaran Melgar
Jul 19, 2019·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Dan LiuChunrong Wang
Jul 3, 2020·Environmental Science and Pollution Research International·Guiquan CheLaisheng Li
Jun 17, 2020·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Wei ChenXueqin Wang
Aug 3, 2020·Environmental Science and Pollution Research International·Qiong LiuBaozeng Ren
Dec 5, 2019·Frontiers in Chemistry·Helin XuJinli Zhang
Jan 8, 2020·International Journal of Environmental Research and Public Health·Ayad A H FaisalMu Naushad
Nov 18, 2020·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Hao PengBingqing Wang
Dec 15, 2020·Journal of Environmental Health Science & Engineering·Rasool AlaeiAli Behnamfard
Nov 18, 2020·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Huannan WangJiajie He
Apr 3, 2021·Environmental Research·Yohan JayawardhanaMeththika Vithanage

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