Abstract
The degradation of Toluidine Blue dye in aqueous solution under UV irradiation is investigated by using photo-Fenton oxidation (UV/H2O2/Fe+). The effect of initial dye concentration, initial ferrous ion concentration, pH, initial hydrogen peroxide dosage, and irradiation time are studied. It is found that the removal rate increases as the initial concentration of H2O2 and ferrous ion increase to the optimum value, wherein we get more than 99% removal efficiency of dye at pH = 4 when the [H2O2] = 500 mg/L, [Fe+2] = 150 mg/L. Complete degradation was achieved in the relatively short time of 75 minutes. Faster decolonization is achieved at low pH, with the optimal value at pH 4. The concentrations of degradation dye are detected by spectrophotometer at λmax = 626 nm. The order of photo degradation reaction under UV is first-order kinetics. The photo-Fenton degradation process was monitored by UV-visible spectrophotometer.
Keywords
Photo-Fenton Oxidation, Removal, Toluidine Blue dye, UV-Visible
Article Type
Supplemental Issue
How to Cite this Article
Dhahir, Saadiyah A.; Hussein, Enaas A.; Saleh, Asaad H.; and Samer, Mouna
(2016)
"Removal Color Study of Toluidine Blue dye from Aqueous Solution by using Photo-Fenton Oxidation,"
Baghdad Science Journal: Vol. 13:
Iss.
2, Article 70.
DOI: https://doi.org/10.21123/bsj.2016.13.2.2NCC.0440
