STUDY OF AZO COLOR REMOVAL USING ADVANCED OXIDATION PROCESS WITH OZONE

• Main Author: Rahmi Suada, Shafia
• Format: Final Project
• Language: Indonesia
• Subjects: Teknik saniter dan perkotaan; teknik perlindungan lingkungan
• Online Access: https://digilib.itb.ac.id/gdl/view/51259
• Institution: Institut Teknologi Bandung

The existence of the textile industry in Bandung has contributed to the pollution of the Citarum River. One of the problems with textile industrial wastewater is the color content that is difficult to degrade so that it can cause aesthetic value problems in receiving water bodies, endanger biodiversity and contain toxic and carcinogenic substances that interfere with human health and other living creatures. Most of the textile industries in the Bandung area dispose of their waste water into the Upper Citarum River containing dyes in the form of azo dyes. One of the advanced processing technologies for color removal is the Advanced Oxidation Process (AOP) with ozone (O3) which is capable of decolorizing textile effluent waste. The ozonation process was carried out in a 16 L reactor by batch in Reactive Black 5 (RB5), Reactive Yellow (RY), Reactive Blue (RB) and Reactive Red (RR) dyes with various concentrations of 5 mg / L, 10 mg / L, 15 mg / L and ozone dosage variations of 7.44 mg / minute and 22.32 mg / minute. Color removal of RB5, RY, RB, and RR at various concentrations of 5 mg / L and 10 mg / L reached 100% at an ozone dose of 22.32 mg / minute. Decolorization at various color concentrations of 15 mg / L with variations in ozone dose of 22.32 mg / minute for RB5 99.77% while RY, RB and RR reached 100%. The results of low dissolved ozone concentrations indicate that the ozone has reacted and oxidized the organic compounds contained in the waste. The largest removal of COD was at an ozone dose of 22.32 mg / minute, reaching 100%. The best decolorization in this research is RR> RB> RY> RB5.