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Abstract

BIOETHANOL PRODUCTION FROM AGRICULTURAL WASTE MATERIALS

M. Saranya, M.Phil and *Dr. J. Thirumagal

ABSTRACT

Bioethanol is the alcohol made by Fermentation which is extremely environmental friendly, cheap, pollution free that can be obtained by the use of microorganism using Sweet sorghum, Sweet potato and Grasses as substrates. The fermentation was carried out maintaining the substrate inoculated with the Saccharomyces cerevisiae in the specific medium at various pH and with/without salt content such as pH 5, 5.5, 6 and with and without NH4Cl and (NH4)2SO4. Sweet potato as substrate was inoculated with Trichoderma and Saccharomyces cerevisiae as the sources for the production of Bioethanol. The fermentation was maintained at 37°C which was found to be optimum for the effective production of Bioethanol. Distillation process was done followed by the titration after the Fermentation. The Bioethanol produced was collected in a beaker in the form of vapors which was then titrated against the Sodium thiosulphate using starch as indicator. Finally, the Bioethanol produced using Sweet sorghum as substrate was found to be maximum at 22.5 ml as titre value at pH 5 and found to be minimum at pH 6. The bioethanol produced using Sweet potato as substrate was found to be maximum at 26.5 ml at pH 5 using Trichoderma as microorganism and 23 ml at pH 5.5 using Saccharomyces cerevisiae as microorganism.

Keywords: Bioethanol, Sweet sorghum, Sweet potato, Grasses, Saccharomyces cerevisiae. Trichodermaviridae.


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