PENGARUH KONSENTRASI KATALIS ASAM DAN KECEPATAN PENGADUKAN PADA HIDROLISIS SELULOSA DARI AMPAS BATANG SORGUM MANIS

Abstract

Sweet sorghum stem residues contains high enough cellulose (36.92%) so it can be hydrolyzed to glucose. In this research, hydrolysis of cellulose is carried out using hydrochloric acid catalyst. This research aims to determine the effect of acid catalyst concentration and agitation speed on the resulting reduction of glucose levels and determine the reaction rate constant of hydrolysis of sweet sorghum stem residues. The observed variables were the concentration of hydrochloric acid catalyst (0.5 N, 1 N, 1.5 N, 2 N) and the agitation speed (150 rpm, 200 rpm, 250 rpm, 300 rpm). Glucose samples were analyzed by using the Lane-Eynon method. Data analysis showed the higher concentration of hydrochloric acid (HCl) and the agitation speed, the levels of reduced glucose that is formed is also higher. In this study by assuming a first order reaction, the reaction rate constants obtained at variable concentrations of hydrochloric acid catalyst ranged from 0.0010 to 0.0033 / minute and at agitation speeds variable ranged from 0.0023 to 0.0030 / minute.