Open AccessRemoval of Dibenzothiophene Using Activated Carbon/γ-Fe2O3 Nano-Composite: Kinetic and Thermodynamic Investigation of the Removal Process
Author(s) -
Maryam Fayazi,
Mohammad Ali Taher,
Daryoush Afzali,
Ali Mostafavi
Publication year - 2015
Publication title -
shilap revista de lepidopterología
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.338
H-Index - 12
eISSN - 2340-4078
pISSN - 0300-5267
DOI - 10.22036/abcr.2015.10158
Subject(s) - dibenzothiophene , activated carbon , composite number , nano , chemical engineering , process (computing) , materials science , carbon fibers , chemistry , nanotechnology , adsorption , composite material , organic chemistry , catalysis , engineering , computer science , operating system
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.
Accelerating Research
Robert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom
Address
John Eccles HouseRobert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom