The feasibility of bioethanol production from rice husk as an important sustainable alternative source of biofuel with a and management of agricultural wastes was undertaken. The content of cellulose and hemicelluloses from the rice husk collected from rice processing site was evaluated followed by ethanol production. The process for bioethanol production involves three basic steps: pretreatment with an alkali, enzymatic hydrolysis using Aspergillus niger and Trichoderma harzianum and sugar fermentation by Saccharomyces cerevisiae, and all carried out in accordance to standard procedures. Results collected revealed that the rice husk contain 38% cellulose and 35% hemicelluloses. difference (p<0.05) in the yields of the reducing sugar obtained from the substrate (5g) usi Aspergillus niger (2.81g\L) and Trichoderma h After fermentation of the substrates at 30 there was significance difference ( niger (6.99%) and Trichoderma harzianum choice in bioethanol production using rice husk substrate when compared to Trichoderma harzianum. Keywords: Bioethanol, Rice husk, Aspergillus niger, Trichoderma harzianum, Saccharomyces cerevisiae . INTRODUCTIONAgricultural wastes are among the ca environmental pollution; their conversion useful products may ameliorate the problem they cause. Ethanol productions from cellulosic agricultural waste materials offer a solution to some of the recent environmental, economic, and energy problems facing worldwide. Nationally, energy costs are on the rise and forecasts of petroleum supply disrupt once again making new (Ajeet et al Rice husk consist on 36-40% cellulose, and 12 19% hemicelluloses (Banerjee et Generally, a large amount of rice husk is dumped as waste which results in waste disposal problem and methane emissions. Moreover, the low density of rice husk can cause it to be air-borne easily resulting in breathing problems if inhaled (Nyachaka 2013). The present study was set up with the aim of using rice husk as a substrate for bioethanol production in view of the present call by government and other organizations for conversion of waste to wealth MATERIALS AND METHODS Collection of Samples Rice husk (fito rice) was collected from rice processer at Dawanau, Dawakin tofa local The feasibility of bioethanol production from rice husk as an important sustainable alternative source of biofuel with a view to minimize both the emission of green house gases and management of agricultural wastes was undertaken. The content of cellulose and hemicelluloses from the rice husk collected from rice processing site was evaluated followed he process for bioethanol production involves three basic steps: pretreatment with an alkali, enzymatic hydrolysis using Aspergillus niger and Trichoderma harzianum and sugar fermentation by Saccharomyces cerevisiae, and all carried out in andard procedures. Results collected revealed that the rice husk contain 38% cellulose and 35% hemicelluloses. The result also revealed that there is significance <0.05) in the yields of the reducing sugar obtained from th...
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