Because of rising corn costs, alternative feed sources, such as glycerin, have become a major focus for the livestock industry. Rapid expansion of the biodiesel in- dustry has created affordable supplies of crude glycerin. Catalyzed reactions between alcohol and triacylglycer- ides in vegetable oils and animal fats yield biodiesel and the coproduct, crude glycerin (Van Gerpen, 2005). Ap- proximately 10% of the weight of oil or fat used to pro- duce biodiesel becomes glycerin (Dasari et al., 2005), and the US biodiesel industry anticipates that glycerin output will be 635 million kg between 2006 and 2015.