EFFECTS OF GRAPHITE AND COPPER PLATES ON THE PERFORMANCE OF ELECTROLYSIS METHOD PROCESSING TO BATIK INDUSTRY'S WASTEWATER CONTAINED ZINC

• Main Author: Hermawan, Robby
• Format: Theses
• Language: Indonesia
• Subjects: Manajemen & ilmu- ilmu bantu lainnya
• Online Access: https://digilib.itb.ac.id/gdl/view/32040
• Institution: Institut Teknologi Bandung

Batik is a world cultural heritage that has been established by UNESCO. Following the establishment, the demand for batik production is increasing. In this research, batik's wastewater will be processed using a physical-chemical method. The electrolysis process will break down the wastewater molecules by means of electrical direct current and with the help of electrolyte compound such as NaCl so that a redox reaction is achieved. Wastewater originates from the batik home industry within the area of Lembang. The waste is processed using two types of electrolysis variations, namely voltage and type of electrode. In the first variation, graphite electrodes are used on both anode and cathode sides with voltage supply ranging from 5 Volts, 15 Volts to 48 Volts. The second variation includes the use of graphite on the anode and copper on the cathode with voltage supply of 5 Volts, 15 Volts and 48 Volts. In the initial characteristic test, Zn of 340.76 mg/l is found. The first variation of electrolysis process using graphite-graphite electrodes results in an optimum Zn isolation of 89.74% at the voltage of 48 Volts during 8 hours and the variation using graphite-copper electrodes generates an optimum of 98.26% at the voltage of 48 Volts during 48 hours. The variation using pH and NaCl on graphite-graphite electrodes generates 92.73% isolation for pH of 10 and NaCl of 0 gr/l; while on graphite-copper electrodes, the isolation is 94.7% for pH of 10 and NaCl of 5 gr/l.