Bioconversion of agriculture wastes for obtaining of bioethanol

  • S. Garmash
Keywords: potato peel waste, wheat straw, apple and grape pomace, yeast H. polymorpha, saccharification and fermentation

Abstract

Ethanol is one of the bio-energy sources with high efficiency and low environmental impact. Various raw materials have been used as carbon source for ethanol production. The aim of our work was to study investigation of bio-ethanol production from potato peel waste, wheat straw, apple and grape pomace. It is suggested to use yeasts Hansenula polymorpha for the process of simultaneous saccharification and fermentation. The industrial use of these yeasts is conditioned by their capacity for the accumulation of considerable biomas in a fermenter, that provides the high exit of foods. The main stages of this process are: thermal treatment of raw material, hydrolysis of starch, fermentation, separation of liquid, cooling, distillation of solution. In industry from 100000 tons of wastes it is possible to get from 13 to 21 million l of bioethanol that contains 65–72 % of ethanol. The offered technology will allow to receive an alternative energy source (bioethanol), and also will allow to utilize wastes. Introduction of the offered technology of bioutilization of wastes will allow to improve an ecological situation on territories of an enterprise. A bioethanol is a perspective and an alternative energy source. It is expedient to produce a bioethanol from wastes of cellulose. Power potential ofUkraine for the production of bioethanol is the 370 thousand tons of conditional fuel. Wastes of production of bioethanol can be used as a fertilizer and forage additions for animals, birds etc. Offered technology is economically and ecologically advantageous for agricultural enterprises.

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Section
Agricultural sciences (agronomics, agricultural ecology, land reclamation, ecology, crops husbandry, farming)