Abstract
The aim of this study is to determine the effect of supplementation of nitrogen and sulfur in Bioethanol solid waste fermentation by a consortium of Trichoderma viride and Saccharomyces cerevisiae to dry matter, organic matter, crude protein and non-protein nitrogen. Experimental design used was a complete-random design factorial 3x3 patterns. The treatment consists of; first factor (N1 = 0%, N2 = 1.5%, N3 = 3%) and the second factor (S1 = 0%, S2 = 0.02%, S3 = 0.04%) in which each treatment was repeated three times. The results showed that there was an interaction in the Bioethanol solid waste which was fermented by a mixture of Trichoderma viride and Saccharomyces cerevisiae on dry matter and organic matter. The addition of nitrogen at a dose of 3% produced dry matter and organic matter within the average value of 65.56% and 63.81%. The addition of sulfur at a dose of 0.04% produced dry matter and organic matter within the average value of 59.67 and 57.58%. The addition of 1.50% nitrogen without giving sulfur can increase the crude protein content of the substrate (P <0.05) significantly, whereas the non-protein nitrogen content of each treatment have different effects and not real. The results showed 1.5% urea to provide optimal results.