Bioethanol production from agro wastes of Paddy

Author(s): Sabitri Nahak, Gayatri Nahak, Tapoja Priyadarshani Nayak, R.K.Sahu

Biomassmaterials are used sincemillennia formeetingmyriad human needs including energy. Main sources of biomass energy are trees, crops and animal waste. Bioethanol produced from renewable biomass has received considerable attention in current years. There has been an increasing interest in utilizing alternative sources of energy. Paddy straw and Paddy husk are the two basic rawmaterials chosen for boiethanol production in present study because of their abundant availability and representative sample of crops stovers and unutilizable agro wastes. Each one of this biomass having more than 60-70% cellulose appeared to be very suitable for presence study in collection with bioethanol production. The pretreatment method followed in the present investigation as review fromthe literature available with other cellulosic biomass are also applicable to this chosen biomass as the percentage of available cellulose free fromlignin seal constitute crystalline cellulose and hemicellulose 68%percentage. The subsequent hydrolysis by both chemical and enzymatic methods following the standard method reported by many workers shows significant result in producing fermentable sugar within reasonable incubation period. However for standardization of the protocols use of model sources of cellulase in view of commercial enzyme needs further investigation.With the limitation of time the procedure follow in the present investigation shows encouraging result ranging from0.583mg/gmto1.919mg/gmof fermentable sugar produced after 4 days incubation of reaction mixture in standard reaction, in enzymatic cellulolysis.

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