Now, wineries can also produce bio-fuel

Melbourne, Aug 21 (IANS) The solid grape waste left over from wine-making could be used to prepare bio-fuel, researchers say.

Global wine production leaves an estimated 13 million tonnes of grape marc (the leftover skins, stalks and seeds from wine-making) waste each year, and it is generally disposed of at a cost to the winery.

Researchers from the University of Adelaide showed that up to 400 litres of bio-ethanol could be produced by fermentation of a tonne of grape marc.

“This is a potentially economic use for what is largely a waste product,” said Rachel Burton.

Researchers analysed the composition of grape marc from two grape varieties – cabernet sauvignon and sauvignon blanc.

She also investigated pre-treatment of the grape marc with acid and enzymes.

They found that the majority of the carbohydrates found in grape marc could be converted directly to ethanol through fermentation with a yield of up to 270 litres per tonne of grape marc.

The leftover product was suitable for use as an animal feed or fertiliser.

Ethanol yields could be increased by pre-treatment with acid and enzymes up to 400 litres a tonne.

“Using plant biomass for the production of liquid bio-fuels can be difficult because of it structurally complex nature that is not always easily broken down,” said co-researcher Kendall Corbin.

“Grape marc is readily available, can be sourced cheaply and is rich in the type of carbohydrates that are easily fermented,” Corbin said.

The findings were published in the journal Bioresource Technology.

Leave a Reply

Please enter your comment!

The opinions, views, and thoughts expressed by the readers and those providing comments are theirs alone and do not reflect the opinions of www.mangalorean.com or any employee thereof. www.mangalorean.com is not responsible for the accuracy of any of the information supplied by the readers. Responsibility for the content of comments belongs to the commenter alone.  

We request the readers to refrain from posting defamatory, inflammatory comments and not indulge in personal attacks. However, it is obligatory on the part of www.mangalorean.com to provide the IP address and other details of senders of such comments to the concerned authorities upon their request.

Hence we request all our readers to help us to delete comments that do not follow these guidelines by informing us at  info@mangalorean.com. Lets work together to keep the comments clean and worthful, thereby make a difference in the community.

Please enter your name here