Dept of Chemical & Environmental Engineering
University of Arizona
PO Box 210011
Tuscon, AZ  85721-0011  USA
Tel:  (520) 621-6044  |  Fax: (520) 621-6048
Email:  rga@engr.arizona.edu

Dr. Arnold has been a member of the University of Arizona Environmental Engineering Faculty since 1986.  He has served the profession as editor-in-chief and associate editor of the ASCE Journal of Environmental Engineering and as a member of the technical boards for the Water Environment Research Federation and the Water Reuse Foundation. He has been on the Board of Directors for the Association of Environmental Engineering and Science Professors (AEESP) and the AEESP Foundation.

Research interests

Dr. Arnold has research interests in the chemical and biochemical bases of water, wastewater and hazardous waste treatments. He has published extensively in areas of wastewater reclamation and reuse for non-potable and indirect potable reuse. In this area, his work has been directed toward soil-aquifer treatment, destruction of chlorinated solvents and fire retardants, pressure and distillation membrane separations and advanced oxidation processes. He is interested in systems approaches to infrastructure design based on cost and security considerations.

 Education and Training 

  • Bachelor of Science in Mechanical Engineering: US Naval Academy, 1969
  • Masters of Science in Environmental Engineering: University of North Carolina at Chapel Hill, 1976
  • Doctorate in Environmental Engineering: California Institute of Technology, 1986
  • Professional Engineer in California, Civil Engineering, 1990.