Artículos de revistas
Semi-permanent hair dyes degradation at W/WO3 photoanode under controlled current density assisted by visible light
Fecha
2017-01-01Registro en:
Journal of Advanced Oxidation Technologies, v. 20, n. 2, 2017.
2371-1175
1203-8407
10.1515/jaots-2016-0168
2-s2.0-85027410715
Autor
Unidade Acadêmica de Serra Talhada
Universidade Estadual Paulista (Unesp)
Institución
Resumen
The indiscriminate use of hair dyes has attracted great deal of attention due to its toxicological and mutagenic aspects demonstrated by some of these substances. Thus, the effluent from beauty salons and domestic sewages if not properly treated can reach water treatment plants and water sources, enhancing human health and environmental protection concern. This work explores the application of photoelectrocatalytic process on Basic Brown 16 and Basic Blue 99 degradation as model of basic hair dyes pollutants. W/WO3 electrode was used as photoanode under optimized conditions of 0.10 mol L-1 Na2SO4 as electrolytic solution, pH 2.0, under 1.25 mA cm-2 of controlled current density application and visible light irradiation. The process leads to complete color removal, and up to 59% and 44% mineralization of Basic Brown 16 and Basic Blue 99, respectively. The use of W/WO3 photoanodes under visible irradiation could assist on development of wastewater treatment technology.