Hans van Leeuwen
Johannes "
Hans"
van Leeuwen (born 1946 in
Gouda, South Holland) is educator, engineer, inventor, researcher, and
entrepreneur. He is an
emeritus professor of Civil, Construction and Environmental Engineering at
Iowa State University and an entrepreneur in ethanol co-product development. His research and innovations have worked to solve various problems including, new water purification methods, a way of creating food and animal feed from waste, and a process in making the purest alcohol ever made.
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