Optimization of Reduction TSS (Total Suspended Solid) Levels on Skin Cracker Industrial Waste Using Chitosan Coagulant

Abstract

Abstract—This study aimed to determine the optimum concentration of natural coagulant from chitosan to reduce the concentration of TSS in the skin cracker industrial liquid waste. The test was carried out by mixing chitosan powder which had been dissolved in 1% acetic acid. The treatment was carried out with variations in coagulant concentrations of: 100, 150, 200 and 250 mg/L added to several samples, namely the initial TSS concentration of liquid waste obtained from the initial measurement of liquid waste taken at 3 positions of waste disposal sites, namely 500, 570 and 650 mg/L. The results showed that the TSS concentration of 500 mg/L and the addition of 100 mg/L coagulant produced a concentration of 110, 150 mg/L coagulant produced 65 mg/L, 200 mg/L coagulant produced 90 mg/L, 250 mg/L coagulant reached 110 mg /l. At a TSS concentration of 570 mg/L, add 100 mg/L to 122 mg/L, coagulant 150 to 68 mg/L, coagulant 200 mg/L to 89 mg/L, coagulant 250 mg/L to 95 mg/L. TSS concentration of 650 mg/L was added 100 mg/L to 130 mg/L, coagulant 150 mg/L to 76 mg/L, coagulant 200 mg/L to 90 mg/L and coagulant 250 mg/L to 111. Conclusions from the study This shows that the most optimum reduction of TSS concentration is the addition of 150 mg/L of chitosan coagulant which can reduce the concentration of TSS in the skin cracker industrial waste water by 88.3%