Seong Hoon Yoon is a Senior Staff Scientist of Nalco, an Ecolab Company, located in Naperville, Illinois, where he has served since 2001. He received B.S., M.S., and Ph.D. degrees in chemical technology from Seoul National University in 1991, 1994, and 1998, respectively. Dr. Yoon was a research engineer at the LG group in Seoul, Korea, before joining Nalco. Throughout his carrier, Dr. Yoon has been dedicated to advancing various water treatment processes with an emphasis on membrane separation. His research interest includes water reuse and recycle, gas transfer membranes, chemical, biological, and physical water treatment, information communication technologies (ICT) for remote monitoring and control, etc. Dr. Yoon has published more than 50 research papers and reports and holds more than 10 US patents. He has professional engineer’s licenses in chemical engineering (USA) and in environmental engineering (Korea).