Compound removes free fatty acids

By Ron Kotrba | January 01, 2009
Web exclusive posted Dec. 8, 2008 at 3:55 p.m. CST

Ontario-based Coorga International Trading Ltd. is selling a proprietary compound that removes free fatty acids from feedstocks like waste cooking oils and animal fats. According to Garfield Coore, president of Coorga International Trading, for producers not set up with acid-esterification pretreatment before transesterification of the triglycerides with caustic, free fatty acids will produce soaps, which can rob process performance and yield.

"With our product, the product is refined down so there's no soap being created, which lets the transesterification process proceed without negative feedback from the soaps being created," Coore said. "It's a specialized silicate compound that's all I can say. It's a product that's good at what it does."

The amount of product, called Quik 'n' Free, needed to do its job depends on the free fatty acid content of the feedstock. "You add whatever amount of the product with a certain amount of water and what it does is react with the free fatty acids, which makes a bond with the compound and then you just filter it out using regular filtration it's about 200 microns," Coore said. "Or you could centrifuge it." According to Coore, there are no permitting issues with regard to getting rid of the reacted free fatty acid-silicate compound. "It's not regarded as a hazardous waste, it can be composted."

Coore told Biodiesel Magazine that Coorga International Trading currently sells Quik 'n' Free to a company in Lebanon, which uses it with additional compounds sold by Coore's company to reform waste vegetable oils into rejuvenated oil to be used for cooking.

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