Pengaruh Volume Starter Dan Agitasi Dalam Pembuatan Bioetanol Dari Nira Aren (Arenga Pinnata Merr)

Abstract

The purpose of this study was to determine the effect of agitation and volume of starter on yield and concentration of bioethanol produced from Nira Aren (Arenga pinnata Merr). Biocatalyst used was Saccharomyces cerevisiae. Observed variables was starter’s volume and agitation speed in anaerobic fermentation condition. It was started by preparing the starter and then followed by anaerobic fermentation process. Then the fermented result was distillated at temperature of 88 oC. The results showed that the higher starter volume and agitation speed, the higher concentration and yield of bioethanol produced until it reached its highest point. Adding starter’s volume and increasing the agitation speed beyond its highest point did not increase levels and yield of bioethanol produced. The highest concentration and yield of bioethanol produced in this study amounted to 47.618% (v/v) and 48.1411% was obtained at 35% starter volume with agitation speed of 100 rpm.