Title of article
Removal of Dibenzothiophene Using Activated Carbon/γ-Fe2O3 Nano-Composite: Kinetic and Thermodynamic Investigation of the Removal Process
Author/Authors
-، - نويسنده Shahid Bahonar University of Kerman Fayazi, Maryam , -، - نويسنده Research Institute of Environmental Sciences Taher, Mohammad Ali , -، - نويسنده Environment Department, Research Institute of Environmental Sciences, International Center for Science, High Technology & Environmental Sciences, Kerman, Iran Afzali, Daryoush , -، - نويسنده Department of Chemistry, Faculty of Sciences, Shahid Bahonar University, Kerman, Iran Mostafavi, Ali
Issue Information
دوفصلنامه با شماره پیاپی 0 سال 2015
Pages
12
From page
73
To page
84
Abstract
-
Abstract
In the present study, removal of dibenzothiophene (DBT) from model oil (n-hexane) was investigated using magnetic activated carbon (MAC) nano-composite adsorbent. The synthesized nano-composite was characterized by FT-IR, FE-SEM, BET and VSM techniques. The MAC nano-composite exhibited a nearly superparamagnetic property with a saturation magnetization (Ms) of 29.2 emu g-1, which made it desirable for separation under an external magnetic field. The magnetic adsorbent afforded a maximum adsorption capacity of 38.0 mg DBT g-1 at the optimized conditions (adsorbent dose, 8 g l-1; contact time, 1 h; temperature, 25 °C). Langmuir, Freundlich and Temkin isotherm models were used to fit equilibrium data for MAC nano-composite. Adsorption process could be well described by the Langmuir model. Kinetic studies were carried out and showed the sorption kinetics of DBT was best described by a pseudo-second-order kinetic model. In addition, the MAC nano-composite exhibited good capability of recycling to adsorb DBT in gasoline deep desulfurization.
Journal title
Analytical and Bioanalytical Chemistry Research
Serial Year
2015
Journal title
Analytical and Bioanalytical Chemistry Research
Record number
2352960
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