جستجوی مقالات مرتبط با کلیدواژه "نانوذرات آهن صفر" در نشریات گروه "پزشکی"

Background and Stability and sustainable [s1] of emerging synthetic compounds such as Dimethyl phthalate lead to increasing their concentrations in environment and food chain and health risks. Therefore, researchers are concern to achieve effective and efficient methods for removal these pollutions. This aim of this study was to evaluation of the efficiency of heterognous Fenton using Zero-valent iron nanoparticles in dimethylphthalate removal from aqueous solutions.
This experimental study was conducted in laboratory scale in batch reactor. The effects of operational parameters such as reaction time (15 to 120 min), pH (2 to10), H2O2 concentrations (0.01 to 1 mmol/L), nZVI dose (0.01 to 0.5 mg/L) and initial concentrations of Dimethyl phthalate (2 – 50 mg /L) determined by one at a time method. Then effect of each heterogeneous Fenton regent was determined in dimethyl phthalate removal.
The results showed that maximum efficiency of heterognous Fenton process in dimethylphthalate removal occur at pH=4. Also at H2O2 concentration 0.1 mmol/L, nZVI dose 0.05 g/L, Dimethyl phthalate concentration 2 mg/L and reaction time 120 minute, amount of Dimethyl phthalate removal was 92.8%.
According to the results, nZVI- heterognous Fenton process has appropriate efficiency in Dimethyl phthalate removal from aquatic solutions and can be assumed as an effective and applied method for removal similar compounds from industrial wastewater.

Background and Stability of new synthetic compounds such as Dimethyl phthalate increased their concentration in the environment and food chain and caused health risks. Therefore, achieve effective and efficient methods to removal of pollutants are one of the environmental researchers concern. This study investigates efficiency of heterognous Fenton process using nZVI in dimethylphthalate removal from aqueous solutions.
This experimental study was conducted in batch reactor in laboratory scale and the efficiency of heterognous Fenton process was analyzed in a batch system with the effect of changes in operating parameters such as reaction time (15 to 120 min), pH (2 to10), H2O2 concentration (0.01 to 1 mmol/L), nZVI dose (0.01 to 0.5 mg/L) and initial concentration of Dimethyl phthalate (2 – 50 mg /L). Then the effect of each heterogeneous Fenton regent in dimethyl phthalateremoval was determined.
The results showed that the maximum efficiency of heterognous Fenton process in removal of Dimethyl phthalate is at pH=4. Also in optimal conditions, the parameters affecting reaction was determined as H2O2 concentration 0.1 mmol/L, nZVI dose 0.05 gr/L, Dimethyl phthalate concentration 2 mg/L and 120 minute, amount of Dimethyl phthalate removal was 92.8%.
According to the results, heterognous Fenton process using nZVI has an optimal efficiency in removal of Dimethyl phthalate from aquatic solutions and can be considered as an acceptable and low Cost method for the removal of similar compounds.