An old person told my father , the money is in the junk end of the business . Glycerine may be a burden to deal with , except glycerine has its' uses . In fuel technology glycerine may be made into glycerine triacetate . It's used as a fuel additive , an anti-knock additive . So there maybe a factory that buys glycerine to purify , then make a saleable product . The Fischer Esterification of glycerine with acetic acid using concentrated sulfuric acid as catalyst makes glyceryl triacetate plus water .