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Chethan S.G., M. H. Moinuddin Khan, H. B. Suresh
Bioethanol is a green fuel for transportation, environmentally sustainable resource. Nowadays, many countries use 10% ethanol with conventional petrol. The current bioethanol supply is insufficient to meet the fuel demand and thus it is necessary to seek different new resources for bioethanol production. Numerous lignocellulosic biomasses such as fruits, vegetables and agricultural residues have been identified and analyzed a sustainable resource for the production of bioethanol. This work explores the use ofvarious pulpresidues from different kinds of fruits separately, such as Ananas comosus (pineapple), Manilkara zapota (Chikoo), Citrus sinensis (orange), Vitis vinifera (grapes), Punica granatum (pomegranate), Citrus limetta (Mousami) and Mixed Fruit Extract (MFR) for bioethanol production. The collected fruitwaste is allowed for the fermentation process in the presence of yeast (Saccharomyces Cerevisiae) separately, resulting in the production of bioethanol. The ethanol yield during the fermentation process is monitored by an Abbs refractive instrument for every 24 hours, 48 hours, and 144 hours. It is observed that, after 144 hours (one week). The ethanol production is found to bemaximum, when Vitis vinifera (grape) pulp residue is used as raw material and it’s yield is highest (67%)in comparison with the other fruit wastes. Further, it has been observed that, the bioethanol production is 65% , 57% in Punica granatum (pomegranate), Mixed Fruit Extract (MFR) respectively. Bioethanol quality is characterized by Fourier transform infrared spectroscopy (FTIR) and gas chromatography techniques.
Fruit waste; total sugar content; bioethanol; refractive index; FTIR; gas chromatography