ethanol

The qualitative and quantitative composition of volatile substances of distillates obtained by bioconversion of wheat and rye under the conditions of using different enzyme preparations complexes were studied. It is shown that the content of higher alcohols in rye and wheat distillates increases by 33 and 39%, respectively, for which Laminex BG2 was additionally used as a source of cellulase, and the concentration of furfural increases by 2.2-3.5 times.

The process of fermentation of beet molasses to ethanol using dry alcohol yeast Deltaferm AL-18, reactivated in wort with different dry matter content was studied. It is shown that the fermentative activity of these yeasts is higher than the generative one. The concentration of ethanol in the brew is maximum under the condition of reactivation of yeast in the wort (22 % CF). The density of yeast after fermentation decreases proportionally if the yeast is activated in the wort with a higher concentration.

In this article the extraction of chloride from a mixture of sulfate-chloride salts by aqueous organic extractant with ethanol was investigated. It is found that using of the ratio of T:P = 1:2 and the concentration of ethanol in the extractant 50 wt. % сan get a satisfactory yield chlorine-free product that meets to potassium-magnesium. 

The results of comparative studies of the chloride extraction from a mixture of sulfate salts of chloride by aqueous and organic extractants based on ethanol, isopropanol and acetone are given. It was found that the most effective reagent for obtaining chlorine free product is ethanol. 
Наведені  результати  порівняльних  досліджень  екстрагування  хлоридів  із  суміші сульфатно-хлоридних  солей  водно-органічними  екстрагентами  на  основі  етанолу, ізопропанолу  та  ацетону.  З'ясовано,  що  найефективнішим  реагентом  для  одержання безхлоридного продукту є етанол. 

Reciprocal solubility of gasoline and gasoline fractions in ethanol depending upon the aromatic hydrocarbon content in them has been investigated. Conditionally the ternary system “paraffin-naphthenic hydrocarbons–aromatic hydrocarbon–ethanol” demonstrates a bounded solubility with two pairs of the components. Ethanol solubility in hydrocarbons is only 1–3 %. The hydrocarbons solubility in ethanol depends upon water content in it and the temperature.

Power-ecological characteristics of diesel engine work on ethyl esters of rapeseed and sunflower oils and their blends with mineral diesel have been studied. Acceptable power and high environmental performance of the engine work on the studied fuels have been established. It is shown that fuels on the basis of sunflower oil are slightly inferior to fuel on the basis of rapeseed oil in energy performance but surpasses them in environmental performance.