Effect of Vinasse Recycling on Effluent Reduction from Distilleries: Case of Metehara Distillery, Ethiopia

This study was conducted at the ethanol plant of Metehara sugar factory, a laboratory scale, to assess effect recycling vinasse into fermentation process on effluent reduction. Vinasse is an produced from distilleries. The experimental design included concentrations 4 dilution rates (0 (control), 20, 35, 50, and 65% water) with 2 replicates 6 responses, as follows: yield, efficiency, residual concentration, cell count, viability, calcium oxide content. In this study, actual operational parameters were maintained during experiment. result experiment indicates that, up 20% recycling, there no influential impact or content, attributable compared control. Above yield efficiency decreased sharply those addition, put practice, amount generated will be reduced by about 19.5% 114.2 tons water saved per day. Moreover, excess distillery, which beyond handling capacity bio-compost reduce 105 36.8 Therefore, it possible recycle fermenter without causing any impacts distillery’s performance.