A comparative study of removal of methyl tertiary-butyl ether (MTBE) from aquatic environments through advanced oxidation methods of H2O2/nZVI, H2O2/nZVI/ultrasound, and H2O2/nZVI/UV

作者：Samaei Mohammad Reza^*; Maleknia Hoshang; Azhdarpoor Abooalfazl

来源：Desalination and Water Treatment, 2016, 57(45): 21417-21427.

DOI：10.1080/19443994.2015.1123193

• MTBE
• nZVI
• H2O2
• UV
• Ultrasound

This study compares the efficiency of oxidation with H2O2 and nanoscale zero-valent iron (nZVI)in the presence of ultrasound and that of oxidation with ultraviolet radiation and H2O2/nZVI in the removal of MTBE from aqueous solutions. The effects of some parameters, such as ultrasound, contact time (2-60min), concentration of hydrogen peroxide (5-20ml/L), concentrations of nZVI (0.15-0.45g/L), pH (2-9), and concentration of MTBE (50-750mg/L) were investigated. In this study, the best MTBE removal efficiency was obtained at a rate of 89.56% in a concentration of 50mg/Lat pH 3.5 with optimal H2O2 concentration of 10ml/L, nZVI concentration of 0.25g/L, and oxidation time of 15min. Comparison of the effects of ultrasound with those of ultraviolet radiation, in similar conditions, showed no significant difference in efficiency between the ultrasound and UV (p?0.05). However, comparing the efficiency of oxidation in the presence of ultrasound and without ultrasound in similar oxidation conditions showed significant differences (p?0.05). In optimum conditions for oxidation, H2O2/nZVI/ultrasonic can be used as a convenient and efficient method to reduce concentration of MTBE in contaminated waters.

• 出版日期2016