Ecology, Environment and Conservation Paper

Supplement Issue, Dec. 2014; Page No.(293-296)

PRODUCTION OF BIOETHANOL FROM AGRICULTURAL WASTES USING SACCHAROMYCES CEREVISIAE MTCC 170

Robinka Khajuria, Geetanshu Goyal, Vipul S. Bhatnagar, Amandeep Singh and Loveleen Kaur

Abstract

The indispensable reliance on petrochemicals and the realization that these resources will not last for long has led to the development of Bio ethanol as prospective energy resource. Growing food insecurity and increase in the cost of food crops has shifted the focus of bioethanol production from traditionally used food crops to agricultural residues such as wheat straw, rice straw, corn cob, wheat bran etc. The objective of this study was to evaluate the potential of corn cob and wheat husk as substrates for bio ethanol production by Saccharomyces cerevisiae MTCC 170 and to optimize the pre treatment conditions for maximum yield. On varying the concentration of acid and hydrolysis time, it was observed that maximum amount of free sugars (65% and 62%) were released on treatment of corn cob and wheat husk respectively with 1% H2SO4 for 3 hours. A bio ethanol concentration of 2.6% and 2.3 % corn cob and Wheat husk after an incubation of 6 and 9 days. Specific gravity and viscosity for corncob and wheat husk bioethanol was estimated to be 0.969g/g and 0.544 m Pa-s at 25oC and 0.927g/g and 0.544 m Pa-s at 25 oC respectively.

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