Vinasse is abyproduct of thesugar orethanol industry.[1]Sugarcane orsugar beet is processed to producecrystallinesugar, pulp andmolasses. The latter are further processed byfermentation toethanol,ascorbic acid or other products. Juice sugarcane can also be processed directly by ethanol fermentation. After the removal of the desiredproduct (alcohol,ascorbic acid, etc.) the remaining material is called vinasse. Vinasse is sold after a partial dehydration and usually has aviscosity comparable tomolasses. Commercially offered vinasse comes either fromsugar cane and is called cane-vinasse or fromsugar beet and is called beet-vinasse. Vinasse produced from sugar cane is also calleddunder.[2]
In the process ofdistillation of the alcohol and as a result of the heating in the distillation process, in the pulp of the beet reactions ofcondensation and predominantly molecular ruptures take place. This causes a highfulvic acid concentration in this byproduct. One use of vinasse is inthermophilic digesters. InBrazil,thermophilic digestion is a source ofbiogas using pure and hot vinasse as the source of production of methane. In the past, vinasse was a problem in production ofethanol, but vinasse is also a goodfertilizer (at least for some time) and a source ofmethane that can be used to generate heat or electricity. Moreover, other uses of vinasse involving also the formulation of nutritive solutions for hydroponics,[3] formulation of culture media for plant tissue culture[4] and culture media for algal growth.[5][6]
dunder.
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