Perbandingan Pengaruh Lampu UV dan Sinar Matahari Pada Degradasi Zat Warna Congo Red Menggunakan Metode Fotolisis Dengan Bantuan Katalis TiO2

Abstract

Research conducted by photolysis method to degrade Congo Red dye produced from textile industry waste that has a negative impact on the environment using a TiO₂ catalyst aims to determine the optimal degradation percentage on the effect of radiation time and the effect of UV lamp power on the degradation of Congo Red. UV-VIS spectrophotometer measurement results obtained a wavelength of 497nm. The results showed that the percentage of degradation of the optimum radiation time was 92% at 180 minutes, and under the influence of UV lamp power the highest percentage of degradation was 95.21% at 20 watt UV lamp. This study showed that the hydroxyl radical (∙OH) was the main control in degrading Congo Red.