Pengaruh Pengadukan Pada Degradasi Methylene Blue Menggunakan Katalis ZnO Terdoping Cu

— Methylene blue is one of the heterocyclic synthetic dyes used in textile industry, but has a negative impact on water quality and the surrounding environment. This study aims to degrade methylene blue using the photocatalytic method. The catalyst used for degradation is nano ZnO doped Cu 10%. In this study, the degradation process applies sunlight using a hexagonal mobile reactor and the light intensity is a measured used a luxmeter. The degradation process was carried out with variation of stirring at 1500 rpm and without stirring at 1,2,3, and 4 hours. Degradation results were measured using UV-Vis spectrophotometer to see adsorption before and after degradation. Results of this study obtained that the degradation using stirring has a higher percentage of degradation than without stirring. The maximum percentage of degradation obtained in study was 64,4% with a stirring speed of 1500 rpm for 4 hours irradiation.