Photolysis of methylene blue dye using an advanced oxidation process (ultraviolet light and hydrogen peroxide)‎

Abstract EN

Photolysis of methylene blue was studied by using an advanced UV/H2O2 oxidation process.

This study investigated different initial dye concentrations (I0, 20, 30 ppm) using different concentrations of H2O2 (10 % , 30% , 50 % ) in three additions (5 mL, 10 mL, 15 mL).

The results showed that the degradation efficiencies of this dye at different concentrations were as follows: 99.86 % at 10 ppm using 15 mL of 10 % H2O2 after 60 min, 99.22 % at 20 ppm using 15 mL of 30 % H2O2 for 60 min, and 98.90 % at 30ppm using 15 mL of 50 % H2O2 after 90 min.

An increase in the optimum concentration of H2O2 was observed with an increase in the initial dye concentration.

The de-coloration time also increased with increasing initial dye concentration.