Discoloration of Soy Sauce Using Photo-Fenton Process Utilizing Rust and Nano TiO2

Abstract

The availability of Wastewater treatment for soy sauce is confine to several treatments such as nano filtration, adsorption and advance oxidation process. This work utilize the photo-fenton process, one method in advance oxidation process that utilize the radicals for pollutant degradation in treating the stubborn color from soy sauce. The results reveals a color removal efficiency of 100 percent for 1000 ppm and 6000 ppm for 6 hours sun’s exposure and 80 % removal for 10000 ppm sample concentration. The amount of rust-TiO₂ catalyst is 2 g reacted with a 20 % H₂O₂ solutions. TiO₂ use is in nanoparticles form while rust was obtained from an oxidized metal.