Karl Linden
Department Chair • Mortenson Professor in Sustainable Development
Environmental Engineering • Mortenson Center in Global Engineering • Civil Systems

Office: SEEC S291A, ECOT 444


  • Ph.D., Civil and Environmental Engineering, University of California, Davis. March 1997. Advisor: Jeannie L. Darby.
  • Master of Science, Civil and Environmental Engineering, University of California, Davis. March 1993. Advisor: Jeannie L. Darby.
  • Bachelor of Science, Agricultural and Biological Engineering, Cornell University, Ithaca, NY, May 1989. Advisor: William J. Jewell

Honors and Distinctions:

  • International Ultraviolet Association's Lifetime Achievement Award, 2023
  • Mortenson Professor in Sustainable Development, 2015-present
  • President-Elect Association of Environmental Engineering and Science Professors (AEESP), 2018-19 
  • WHO Water Quality Technical Advisory Group and WHO Guidelines for Drinking Water Quality revision committee
  • Helen and Huber Croft Endowed Professorship, 2011 – 2015
  • AEESP/Paul V. Roberts Outstanding Dissertation Award to student Sara Beck (2016)
  • Nirit and Michael Shaoul Fellow 2015-6, Tel Aviv University
  • August-Wilhelm Scheer Professor, Technical University of Munich 2016
  • Peter Wall International Visiting Scholar, University of British Columbia, 2016
  • Japan Society for the Promotion of Science Fellow, University of Tokyo 2015-16
  • WateReuse Person of the Year Award, 2014
  • Australian Water Recycling Center of Excellence Fellow 2013-2014
  • Pioneer Award in Disinfection and Public Health, Water Environment Federation, 2013
  • University Research Award, Boulder Faculty Assembly, Univ. of Colorado Boulder 2013
  • Best Research Paper Award, International UV Association, 2013
  • Best Classic UV Paper Award, International UV Association, 2013
  • Faculty Research Award, College of Engineering and Applied Science, 2012
  • First Place, Best Student Paper Award to PhD Advisee Austa Parker, International UV Association North American Regional Congress, Washington, DC 2012
  • Best Student Paper Award to M.S. advisee Sarah Bounty, International UV Association North American Congress, Toronto, Ontario Canada 2011
  • Distinguished Faculty Award, CEAE Department, College of Engineering, 2011
  • Best Paper of the Year, Journal of the American Water Works Association, 2010
  • Research Development Award, CEAE Department, College of Engineering, 2009
  • Liebman Faculty Fellow, College of Engineering and Applied Science, 2008-2010
  • RMIT International Fellow – Royal Melbourne Institute of Technology, Australia, 2007-2008
  • Klein/Stansell Family Distinguished Research Award, Pratt School of Engineering, 2004
  • John-Kelly C. Warren Faculty Scholar, Pratt School of Eng., Duke University, 2001-2005
  • Switzer Environmental Foundation Leadership Fellow, 2001-2003
  • National Science Foundation New Century Scholar, 1998
  • UNC-Charlotte Junior Faculty Fellowship, 1998

Professional Affiliations:

  • American Society of Civil Engineers
  • American Water Works Association
  • Association of Environmental Engineering and Science Professors
  • International Water Association
  • International UV Association



I teach undergraduate courses on Water and Wastewater Treatment and Water and Sanitation in Developing Countries and graduate courses in Water Reuse, UV processes in environmental systems, and Water Sanitation and Hygiene. Other interests include water and wastewater treatment processes (physical, chemical, and biological), environmental aquatic chemistry, ecological environmental engineering, water treatment process laboratory.


Research focuses on investigation of alternative disinfectants and advanced oxidation for water and wastewater treatment. Specifically, efficacy of UV irradiation for inactivation of persistent and emerging pathogens; and the investigation of advanced oxidation processes for the degradation of environmental pollutants of concern in clean and reclaimed water for reuse. Specific focus on small systems, point of use and sustainability of water and sanitation infrastructure in developing communities. 

Recent Publications:

  1. Succession of toxicity and microbiota in hydraulic fracturing flowback and produced water in the Denver–Julesburg Basin (2018) NM Hull, JS Rosenblum, CE Robertson, JK Harris, KG Linden, Science of The Total Environment 644, 183-192
  2. Removal of trace organic chemicals in wastewater effluent by UV/H2O2 and UV/PDS (2018) M Nihemaiti, DB Miklos, U Hübner, KG Linden, JE Drewes, JP Croué Water research 145, 487-497
  3. Pyrolysis of human feces: Gas yield analysis and kinetic modeling (2018) TW Yacob, KG Linden, AW Weimer, Waste Management 79, 214-222
  4. Synergy of MS2 disinfection by sequential exposure to tailored UV wavelengths (2018) NM Hull, KG Linden, Water Research 143, 292-300 
  5. UV/H2O2 process stability and pilot-scale validation for trace organic chemical removal from wastewater treatment plant effluents (2018) DB Miklos, R Hartl, P Michel, KG Linden, JE Drewes, U Hübner, Water research 136, 169-179
  6. Evaluation of advanced oxidation processes for water and wastewater treatment–A critical review (2018) DB Miklos, C Remy, M Jekel, KG Linden, JE Drewes, U Hübner, Water research (in press)
  7. Low levels of iron enhance UV/H2O2 efficiency at neutral pH (2018) SL Ulliman, G McKay, FL Rosario-Ortiz, KG Linden, Water research 130, 234-242
  8. Life Cycle Environmental Impacts of Disinfection Technologies Used in Small Drinking Water Systems (2018) CH Jones, EG Shilling, KG Linden, SM Cook, Environmental science & technology 52 (5), 2998-3007
  9. Critical review of the science and sustainability of persulphate advanced oxidation processes (2018) IA Ike, K Linden, JD Orbell, M Duke, Chemical Engineering Journal (in press)
  10. Improving UV/H2O2 performance following tertiary treatment of municipal wastewater (2018) SL Ulliman, DB Miklos, U Hübner, JE Drewes, KG Linden, Environmental Science: Water Research & Technology 4 (9), 1321-1330
  11. Sunlight-mediated inactivation of health-relevant microorganisms in water: a review of mechanisms and modeling approaches (2018) KL Nelson, AB Boehm, RJ Davies-Colley, MC Dodd, T Kohn, KG Linden, ….Environmental Science: Processes & Impacts 20 (8), 1089-1122