Investigation of Sonoelectrochemistry Process on Discoloration of Basic Yellow 28 in Presence of Titanium Dioxide Nanoparticles

Abstract

In this work, discoloration of basic yellow 28 using sonoelectrochemical method in presence of titanium dioxide nanoparticles was investigated. The respond surface methodology (RSM) was applied for optimization of discoloration. The influence of different factors such as applied potential, amount of titanium dioxide nanoparticles, time and solution pH was evaluated on discoloration. A mathematical model was presented to prediction of discoloration with RSM. The results shown that time has highest effect on discoloration efficiency, pH, applied potential and amount of titanium dioxide nanoparticles has also effective factors. The sonoelectrochemical route in presence of TiO2 nanoparticles has better performance on discoloration comparing with other methods including sonoelectrochemistry, sonochemistry in presence of hydrogen peroxide, sonochemistry in presence of hydrogen peroxide/TiO2 nanoparticles and electrochemistry in presence of TiO2 nanoparticles at optimum condition, i.e. pH= 8.0, 1.1 V applied potential, 0.96 g/L TiO2 nanoparticles and 119 min.

Keywords

• discoloration
• sonoelectrochemistry
• advanced oxidation process
• titanium dioxide nanoparticle