TY - JOUR AB - It is important to utilize crude glycerol, the main byproduct of biodiesel production, to manufacture high value-added chemicals. Since crude glycerol typically contains less than 65 wt % glycerol, purification is the first step for its utilization. Owing to the wide variety of triglycerides, alcohols, catalysts, and separation processes used in biodiesel production, crude glycerol composition varies widely, leading to different crude glycerol purifications. In the present work, we develop a universal procedure for crude glycerol purification, including as key steps initial microfiltration of the crude glycerol, saponification, acidification, phase separation, and biphasic extraction of upper- and lower-layer products. The procedure was utilized to purify crude glycerol samples from two biodiesel production companies, experimentally upgrading both samples to >94 wt % purity. On an Aspen Plus software platform, the purification procedure was simulated using a process model based on two submodels to obtain a good match with the experiments. The developed procedure is suitable for the purification of crude glycerol obtained from different biodiesel production technologies. AD - Purdue Univ, Sch Chem Engn, W Lafayette, IN 47907 USA AN - WOS:000326300400046 AU - Xiao, Y. AU - Xiao, G. M. AU - Varma, A. DA - Oct 2 DO - 10.1021/ie402003u IS - 39 J2 - Ind Eng Chem Res KW - waste cooking oil LA - English N1 - 243et PY - 2013 SN - 0888-5885 SP - 14291-14296 ST - A Universal Procedure for Crude Glycerol Purification from Different Feedstocks in Biodiesel Production: Experimental and Simulation Study T2 - Industrial & Engineering Chemistry Research TI - A Universal Procedure for Crude Glycerol Purification from Different Feedstocks in Biodiesel Production: Experimental and Simulation Study UR - ://WOS:000326300400046 VL - 52 ID - 9470 ER -