| dc.description.abstract | Bioethanol is one kind of renewable energy which promises in this world. The
energy source of bioethanol can be got from plantation wastes which are scarecely
useful such as husk cacao waste. The purpose of this research is knowing the ratio
effect of solid : water and the concentration of catalyst about the gain of the degree of
reducter sugar from husk cacao powder. The main substances used in this research are
husk cacao wastes from cacao plantation and sulphate acid. The variables used in this
research are the ratio of solid : water and the concentration of catalyst in hydrolysis
process. The husk cacao which had been dried by sun light were milled in a ball mill,
filtered by strainer 100 mesh, added with sulphate acid catalyst which had
concentration 2 M, 3 M, and 4 M, and afterwards done hydrolysis process by using hot
plate. The hydrolysis process took at 100 oC degree and two hours and then the
hydrolysates were analyzed in quantitative and qualitative. The result of this research
indicated that the hydrolysate of husk cacao contented reducted sugar.which can be
used as the main substance to produce bioethanol. The quantitative analysis about
reduction sugar degree indicated the reducted sugar degree increased as many as the
catalyst concentrations and had reverse proportion with the main substance ratio. The
best reducted sugar is 30,67% which was produced at at 100 oC degree in 120 minutes
by using ratio between solid : water was 1 : 5 and catalyst concentration was 4 M. | en_US |
