Ecological and resource-saving technology for obtaining bioethanol from vegetable raw materials

Abstract

The burning of agro-industrial and agricultural waste, or, as they are called by fire fighting specialists, agricultural waste, oddly enough, is associated with climate change, which is noticed not only by climate scientists, but also by ordinary citizens. The bioconversion of ordinary cane waste into processed sugars for the production of bioethanol is an urgent and dynamically developing area of research. The purpose of this work was to study two types of pretreatment with alkali and steam of waste cane. Pretreatment with alkali revealed superiority in relation to the rate of enzymatic hydrolysis and, as a consequence, an increase in the productivity of bi-ethanol. In a pretreatment medium with a 6% alkali solution in an autoclave, a high content of total reducing sugar was shown. Fermentation of cane hydrolysates with Saccharomyces cerevisiae Y-1693 contributing to the yield of the product in the amount of 17.5 g/l of bioethanol. The results of the conducted studies show that the biomass used is extremely relevant for the production of bioethanol. In this regard, the waste ordinary cane can be used for the production of second-generation bioethanol, and becomes a potential candidate for future production of bioethanol based on the results of the conducted research.