Richard L. Valentine

(319) 335-5653
4118 Seamans Center for the Engineering Arts and Sciences
Joined the College of Engineering: 
Ph.D., Civil and Environmental Engineering, University of California-Berkeley, 1982
M.S., Civil and Environmental Engineering, University of California-Berkeley, 1977
M.S., Chemical Engineering, University of Michigan, 1974
B.S., Chemistry, University of Michigan, 1973
B.S., Chemical Engineering, University of Michigan, 1973
Special Fields of Knowledge: 
Chemistry, Environmental Chemistry, Chemical Engineering.
Present Research Interests: 
Reaction mechanisms and kinetics of disinfectant by-product formation in drinking water; inorganic contaminant accumulation in distribution systems; the role of lead oxide in controlling lead in drinking water; occurrence and removal of radio nuclides in drinking water; nano particulate contaminants in drinking water; advanced oxidation processes.
Selected Publications: 
  • Vikesland, Peter, Ozekin Kenan, and Valentine, R.L.  "Monochloramine Decay in Model and Distribution System Water".  Water Research , Vol. 35, no. 7, pp. 1766-1776, 2001. 
  • Choi, Junghoon, and Valentine, Richard L "N-Nitrosodimethylamine (NDMA) Formation By Free Chlorine Enhanced Nitrosation of Dimethylamine (DMA)", Environmental Science and Technology, Vol. 37, No.21, pp. 4871-4876, 2003. 
  • Duirk, Steve E.,  Gombert, Bertrand, Croue, Jean-Phillipe, and Valentine, Richard L.  “Modeling Monochloramine Loss in the Presence of Natural Organic Matter, Water Research,  39 (14): 3418-3431 Sept. 2005. 
  • Duirk, Steve, E. and Valentine, Richard L. "Modeling dichloroacetic acid formation from the reaction of monochloramine with natural organic matter", Water Research, 40 (14):2667-2674, 2006. 
  • Chen, Z., and R. L. Valentine," Modeling the formation of N-nitrosodimethylamine (NDMA) from the reaction of natural organic matter (NOM) with monochloramine", Environmental Science & Technology, 40, 7290-7297, December 2006.
Active Scientific and Professional Society Memberships: 
American Water Works Association; Water Federation; American Chemical Society; Association of Environmental Engineering Professors; Society for Environmental Toxicology and Chemistry; American Society of Civil Engineers; American Geophysical Union; International Chemical Oxidation Society.