Could grape waste purify alcohol?
When wine is produced in South Australia there is a production of waste residue known as grape marc.
This is often processed at Tarac Technologies where ethanol is recovered to produce alcohol that can be sold back to wineries or other distilleries. Of the alcohol produced, quality can vary because some compounds change the tastes and smells of the alcohol.
In the search for more uses for spent grape marc biomass after ethanol removal, this study investigates the use of spent grape marc to produce an alternative to activated carbon to use in alcohol filtration. To increase alcohol purification, ozonation was investigated to observe the effects of oxidation before alcohol was treated with the grape marc.
The combination of treatments produced results that outline a method for the purification of recovered alcohol to increase overall alcohol production, whilst further utilising wastes to increase efficiency of waste processing.
Chemical Engineering and Advanced Materials