Paper Details

The effects of catalyst to increase hydrolysis yield of sugar from sugarcane bagasse

Preeya Kaewnaree

DOI: https://dx.doi.org/10.12692/ijb/6.8.71-76

Int. J. Biosci. 6(8), 71-76. April, 2015. (PDF)

Abstract:

Increasing sugar yield in chemical hydrolysis of sugarcane bagasse is beneficial for ethanol production. Improved sugar yield in these processes is realized through increased hydrolysis of cellulose. For this reason, a process with a cellulose hydrolysis step was developed in this study. Cellulose of sugarcane bagasse was chemically hydrolyzed using potassium sulphate as a catalyst. Maximum total sugar and reducing sugar yields of 49.95 and 21.33 g/L, respectively, were obtained by hydrolysis with 5 % (v/v) H2SO4 at 121 ºC for 5 hours. When using 18.8 g/L of potassium sulphate as a catalyst, maximum total and reducing sugar yields of 87.86 and 43.84 g/L were observed, respectively. Potassium sulphate catalyst led to a 78% increase in total sugar yield and a 51% increase in reducing sugar yield. These results suggest process improvements to enhance sugar production from cellulosic materials thereby increasing subsequent ethanol yield.