removal of dibenzothiophene using activated carbon/γ-fe2o3 nano-composite: kinetic and thermodynamic investigation of the removal process
نویسندگان
چکیده
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.
منابع مشابه
Removal of Dibenzothiophene Using Activated Carbon/γ-Fe2O3 Nano-Composite: Kinetic and Thermodynamic Investigation of the Removal Process
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...
متن کاملRemoval of Dibenzothiophene Using Activated Carbon/γ-Fe2O3 Nano-Composite: Kinetic and Thermodynamic Investigation of the Removal Process
M. Fayazi*, M.A. Taher, D. Afzali and A. Mostafavi Mineral Industries Research Center, Shahid Bahonar University of Kerman, Kerman, Iran Young Researchers Society, Shahid Bahonar University, Kerman, Iran Department of Chemistry, Faculty of Sciences, Shahid Bahonar University, Kerman, Iran Department of Environment, Institute of Science and High Technology and Environmental Sciences, Graduate Un...
متن کاملKinetic and thermodynamic studies of the removal of murexide from aqueous solutions on to activated carbon
The objective of this study was to assess the adsorption potential of activated carbon (AC) asan adsorbent for the removal of Murexide (Mu) from aqueous solutions. The influence of variablesparameters including pH, amount of adsorbent, sieve size of adsorbent, temperature and contact timeon Mu removal was studied. Following optimization of variables, the relation between concentrations ofdye re...
متن کاملRemoval of Nitrate Using Synthetic Nano Composite ZnO/Organoclay: Kinetic and Isotherm Studies
This study was conducted to investigate organoclay prepared using montmorillonite clay with zinc oxide (ZnO) nanoparticles and a long-chain organic surfactant hexadecyltrimethylammonium bromide for the removal of nitrate ion from aqueous solutions. Adsorbents were evaluated by X-Ray Diffraction (XRD), Fourier Transform Infra-Red (FT-IR),...
متن کاملAcid Dyes Removal from textile wastewater using waste cotton activated carbon: Kinetic, isotherm, and thermodynamic studies
The present study aims at investigating the potential of activated carbon AC prepared from waste cotton fiber for the removal of Acid Dyes from aqueous solutions. The prepared activated carbon was characterized by pore structure analysis, Fourier transforms infrared spectroscopy FTIR. Batch adsorption studies were carried out and the effect of experimental parameters such as pH, initial dye con...
متن کاملPhysical Chemistry Studies of Acid Dye Removal from Aqueous Media by Mesoporous Nano Composite: Adsorption Isotherm, Kinetic and Thermodynamic Studies
In this research, SBA-15/Polypyrrole (SBA-15/PPy) mesoporous nanocomposite was synthesized, characterized and applied for Acid Blue 62 (AB62) adsorption as a textile dye from aqueous solution. In order to evaluate the structural properties of synthesized adsorbent, FT-IR, FESEM and TEM images, XRD, and BET techniques were applied. Some parameters such as pH, dosage, and time which affect the ba...
متن کاملمنابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
analytical and bioanalytical chemistry researchناشر: iranian chemical society
ISSN
دوره 2
شماره 2 2015
کلمات کلیدی
میزبانی شده توسط پلتفرم ابری doprax.com
copyright © 2015-2023