#TITLE_ALTERNATIVE#

• Main Author: ALVERNIA ARUAN (NIM : 15312002), INDAH
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/28018
• Institution: Institut Teknologi Bandung

<p align="justify"> The textile industry keep developing to fulfill human needs. Textile wastewater containing color components and inorganic salts are very dangerous and disturbing aesthetics if dumped into water bodies without treatment. Conventional technologies such as coagulation, filtration, adsorption, membrane and biological treatment can treat textile wastewater but not really effective to degrade color from the waste so photocatalytic, one of Advanced Oxidation Processes (AOPs) method, was used with combination of ZnO nanoparticle and UV. UV and ZnO catalyst reaction will generate hydroxyl radical (OH•) that capable to oxidize everything. This study used an artificial wastewater (Reactive Black 5 dye) and textile waste from PT. X. There were three components that varied in this research, those were the initial concentration of dye, concentrations of ZnO nanoparticles, and the rotating disc speed. The catalyst was immobilized by attaching it to the zinc plate and made in nanoparticles size to speed up and simplify the process. The process used batch system. For all variations of experiments obtained color removal efficiency of 100%, but with a different detention time. From this experiment obtained optimum condition happened when the initial concentration was 10 ppm, the concentration of ZnO nanoparticles was 0.71 mg/cm2, and the rotating disc speed was 25 rpm. The optimum variation used to process the artificial waste in continuous system and obtained removal efficiency of 89.76%. Optimum concentration of ZnO and rotating disc speed was also used to treat textile waste from PT. X. Photocatalytic process was able to lower the concentration of COD, BOD5, color, ammonia, sulfide, oil and grease, and phenols, while pH and TSS increased. Color removal efficiency derived from secondary effluent PT. X was 60% and the color removal efficiency of waste derived from ozone-UV reactor was 20,71%. <p align="justify">