STUDI FOTODEGRADASI CONGO RED MENGGUNAKAN UV/ZnO/REAGEN FENTON

Abstract

The study of photodegradation of Congo Red using UV light, with addition ZnO catalyst, H₂O₂ and Fe²⁺ has been carried out. This study included the determination of optimum amount of ZnO, H₂O₂, Fe²⁺, pH optimum and the determination of system which shows the most effective in Congo Red photodegradation. The results showed that the optimum conditions to degradate 100 ppm of Congo Red solution were 60 mg of ZnO, 4 ml of H₂O₂ (0,0392 mol), 20 mg FeSO₄ (0,0013 mol)  and pH 5. The highest percentage of degradation was 93,6093 + 0,12 % reached using UV/ZnO/H₂O₂/ Fe²⁺ system at 5 hour photodegradation time. In this processes addition of ZnO, H₂O₂, and FeSO₄, and pH were important parameters to increase the percentage of photodegradation.