Kinetika Reaksi Fermentasi Alkohol dari Buah Salak

Abstract

Liquid waste industrial of wheys contain of many complex organic compounds such as proteins, carbohydrates, fats and oils. Based on the results of field studies on Industry Hall of liquid waste industrial characteristics of whey in Medan, it is known that liquid waste industrial of wheys contain average BOD (4583 mg/l), COD (7050 mg/l), TSS (4743 mg/l ) and oil or fat (26 mg/l ) at pH 6.1. Therefore, the whey waste water must be treated before it is discharged into the environment to reduce the contaminants that accompany the waste. One alternative that can be used as a coagulant is moringa seed powder. This study used of moringa seed powder with a water content of 9 %. Variations of coagulant dosage which are used 2000, 3000, 4000, 5000 mg/200 ml liquid waste industrial of whey, coagulant particle size 50 and 70 mesh with the initial pH about 4. The optimum deposition time is obtained 60 minutes with 81.71 % reduction in turbidity, TSS 77.42 %, and 64.10 % COD in 5000 mg/200 ml dosage of coagulant and coagulant particle size of 70 mesh with the final pH about 4, the reductions of turbidity, TSS and COD were obtained over 50 %.it can be concluded that moringa seeds can be used as an effective coagulant as an whey waste alternative treatment.