سپيده پارسا

Dye pollutants are one of the most important types of pollutants that affect human life and the environment. So water purification has always been one of the most important concerns. Among the new water treatment technologies, metal-organic frameworks are a new generation of porous materials that are widely used in various scientific fields, including water purification, due to their properties such as high contact surface and stability in water. In this study, batch operation was applied for the removal of methyl orange dye by Uio-66 metal organic frameworks (MOFs) from aqueous solution. Characterization of Synthesized adsorbent has been accomplished by XRF, SEM, BET, EDX and FTIR analysis. The effects of sorption parameters such as contact time, solution pH, adsorbent dosage and initial dye concentration were eva‎luated in a batch system. The experimental data were fitted by three isotherm models (Langmuir, Freundlich and Temkin adsorption models), and the results showed that the adsorption isotherm data were fitted well to the Langmuir and the measured maximum adsorption capacity calculated according to the Langmuir isotherm was 588.39 mg/g. Also, in order to investigate the kinetic of the adsorption process, pseudo-first-order, pseudo-second-order, and Elovich models were fitted using the laboratory data, and the pseudo-second-order kinetic equation showed a better description of the laboratory data. Finally, the results indicate that UiO-66 could be employed as adsorbent with high absorption for removal of methyl orange dye.

تصفيه آب , جذب سطحي , چارچوب فلزي-آلي , متيل اورانژ

wastewater treatment , Adsorption , Metal organic frameworks , Methyl orange

Sepide Parsa

Dr. Majid Hosseinzade