Dr. Hyunshik Chang is currently employed at Höganäs Environment Solutions, LLC as a Manager, Product Development. He earned his Ph.D in Civil & Environmental Engineering from the University of Washington, and working in Pacific Northwest National Laboratory and Savannah River Ecology Laboratory before joining the Höganäs in 2014. His main focus area is soil and groundwater remediation for radioactive waste and heavy metal removal using ZVI based physicochemical treatment method as well as development of new media for industrial wastewater treatment. Dr. Chang has published 50+ peer-reviewed journal papers, book chapter, technical reports, and conference presentations. He is an author of one patent in Höganäs. He was a member of American Chemical Society, Soil Science Society of America, and American Water Works Association.