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
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
Journal title :
Analytical and Bioanalytical Chemistry Research
