Several methods to cleanse and polish biodiesel are utilized, but the story on how well these work begins upstream. Therefore, the cost-effectiveness of biodiesel purification methods should be evaluated based on composition of upstream product.
The uses of glycerin - crude, USP-grade or otherwise - and other byproducts from biodiesel production are virtually limitless. Profiled here is the glycerin and coproduct research of three Next Generation Scientists for Biodiesel.
Whole Energy became interested in glycerin in 2006 while planning development of a vertically integrated, regional biodiesel company. Although it decided to narrow focus on marketing and distribution, the company has kept glycerin top of mind.