Dr Lim gained industrial experience by working for Pfizer for five years in areas of reaction engineering and separation and purification. He taught for twenty-one years at Purdue University and initiated biochemical engineering research in 1970. He was recruited to the University of California, Irvine, where he was founding chair of biochemical engineering and chemical engineering for ten years and taught for twenty-two years. He has extensive consulting experiences with Leeds and Northrup, Novo Enzyme Corporation, Pharmacontrol Inc., Eli Lilly, Merck, Monsanto, LG Biotech Inc., CJ Biotechnology and Zander Renewable Resources. He studied bioreactions and bioreactor engineering, modeling, optimization and control of bioreactors, cellular regulation, recombinant DNA technology and bioremediation. Dr Lim has supervised more than 50 PhD theses and published more than 160 journal articles and 2 books. He received the Food, Pharmaceutical and Bioengineering Division Award of the AIChE for his work on bioreactor and enzyme engineering.