Professor Summers is the co-author of four books, over 100 peer-reviewed publications, over 200 conference proceeding articles or book chapters and over 300 presentations.

Recent peer-reviewed publications

*undergraduate student


Peterson E , Shiokari ST, Johnson S, Yu Y, Cook S., Summers RS, “Impacts of carbon-based advanced treatment processes on disinfection byproduct formation and speciation for potable reuse,” Water Research, 199, 117180 (2022).

Bentley MJ, Kearns, JP, Murphy BM, Summers RS, “Pre-pyrolysis metal and base addition catalyzes pore development and improves organic micropollutant adsorption to pine biochar,” Chemosphere 286, 131949 (2022)

Kempisty DM, E Arevalo, AM Spinelli, V Edeback, ERV Dickenson, C Husted, CP Higgins, RS Summers, DRU Knappe, “Granular activated carbon adsorption of perfluoroalkyl acids from ground and surface waterAWWA Water Science, 4(1)e1269, (2022).

Shimabuku, KK, RS Summers, “Simple modeling approaches to monitor and predict organic contaminant adsorption by biochar,” Sustainable Biochar for Water and Wastewater Treatment,  D Mohan, CU Pittman, and TE Mlsna, editors 597-610 (2022)

Bentley, MJ AM Kennedy, RS Summers, “Optimizing biochar adsorption relative to activated carbon in water treatment,” Sustainable Biochar for Water and Wastewater Treatment, D Mohan, CU Pittman, and TE Mlsna, editors 737-773 (2022)


Peterson, E, Summers, RS, “Removal of effluent organic matter with biofiltration for potable reuse: A review and meta-analysis,” Water Research, 199, 117180(2021).

Kennedy AM, Arias-Paic M, Bentley MJ, Summers RS. "Experimental and Modeling Comparisons of Ash-Treated Pine Biochar and Activated Carbon for the Adsorption of Dissolved Organic Matter and Organic Micropollutants." Journal of Environmental Engineering, 147 (9) (2021).

Fisher RP, Lewandowski A, Yacob TW, Ward BJ, Hafford LM, Mahoney RB, Oversby CJ, Mejic D, Hauschulz DH, Summers RS, Linden KG, Weimer AW. "Solar Thermal Processing to Disinfect Human Waste." Sustainability, 13 (9) (2021).

Kennedy AM, Hausmann J, Corwin C, Summers RS. "DOM removal is more important than the specific DOM removal pretreatment process for GAC adsorption of TrOCs." Environmental Science: Water Research & Technology, 7, 1707 (2021).

Kearns J, Dickenson E, Aung MT, Joseph SM, Summers SR, Knappe D. "Biochar Water Treatment for Control of Organic Micropollutants with UVA Surrogate Monitoring." Environmental Engineering Science, 38 (5) (2021).

Khan AL, Sokol ER, McKnight DM, Saunders JF, Hohner AK, Summers RS. "Phytoplankton Drivers of Dissolved Organic Material Production in Colorado Reservoirs and the Formation of Disinfection By-Products." Frontiers in Environmental Science, 9, 259 (2021).


Meyer, J., Seidel, C., Summers, R.S., Evaluation of Population-Weighted Risk Reduction for Several Disinfection By-product Control Strategies, ASCE Journal Environmental Engineering, 146 (3) ARTN 04019131(2020).

Raseman WJ, Kasprzyk JR, Summers RS, Hohner AK, Rosario-Ortiz FL. "Multi-objective optimization of water treatment operations for disinfection byproduct control." Environmental Science: Water Research & Technology, 6 (3): 702-714 (2020).

Cuthbertson AA, Kimura SY, Liberatore HK, Knappe DRU, Stanford B, Summers RS, Dickenson ER, Maness JC, Glover C, Selbes M, "GAC to BAC: Does it make chloraminated drinking water safer?" Water Research, 172: ARTN 115432. (2020). 

Bentley MJ, Summers RS. "Ash pretreatment of pine and biosolids produces biochars with enhanced capacity for organic micropollutant removal from surface water, wastewater, and stormwater." Environmental Science: Water Research & Technology, 6 (3): 635-644 (2020).

Thompson KA, Valencia EW*, Summers RS, Cook SM. "Sorption, coagulation, and biodegradation for graywater treatment." Water Science & Technology, 81 (10): 2152-2162 (2020).

Verdugo EM, Gifford M, Glover C, Cuthbertson AA, Trenholm RA, Kimura SY, Liberatore HK, Richardson SD, Stanford BD, Summers RS, "Controlling disinfection byproducts from treated wastewater using adsorption with granular activated carbon: Impact of pre-ozonation and pre-chlorination." Water Research X, 9 (2020).

Summers RS, Shiokari ST, Johnson S, Peterson E, Yu Y, Cook S. "Reuse treatment with ozonation, biofiltration, and activated carbon adsorption for total organic carbon control and disinfection byproduct regulation compliance." AWWA Water Science. 2 (5) e1190 (2020).

Tolofari DL, Masters SV, Bartrand T, Hamilton KA, Haas CN, Olson M, Summers RS, Rasheduzzaman M, Young A, Singh R, et. al. "Full factorial study of pipe characteristics, stagnation times, and water quality." AWWA Water Science. 2 (5) e1204 (2020). 


Terry, L.G., P. Pruisner, E. Peterson, E. Dickenson, J. Wang and R.S. Summers, Scale-Up Methodology for Biological Filtration Removal of Dissolved Organic Matter, Environmental Engineering Science,(2019).

Kempisty DM, Summers RS, Abulikemu G, Niranjan V. Deshpande N, Rebholz JA, Roberts K,  Pressman J., Granular activated carbon adsorption of carcinogenic volatile organic compounds at low influent concentrations. AWWA Wat Sci. 1(2) 2019 e1128 (2019).

Shimbaku, K., Zearley, T., Dowdell, K., Summers, R.S.; Biodegradation and attenuation of MIB and 2,4-D in drinking water biologically active sand and activated carbon filters, Environmental Science: Water Research & Technology, EW-ART-01-2019-000054.R1(2019).

Kearns, J.P., K.K. Shimabuku, D.R.U. Knappe, R.S. Summers, High temperature co-pyrolysis/thermal air activation enhances biochar capacity for uptake of herbicides from surface water, Environmental Engineering Science, EES-2018-0476.R1 (2019).

Hohner AK, Summers RS, Rosario‐Ortiz FL  Laboratory simulation of postfire effects on conventional drinking water treatment and disinfection byproduct formation AWWA Water Science 1 (5), e1155 (2019).

Cuthbertson AA, Kimura SY, Liberatore HK, Summers RS, Knappe DRU, Stanford BD, Maness JC, Mulhern RE, Selbes M, Richardson SD. "Does Granular Activated Carbon with Chlorination Produce Safer Drinking Water? From Disinfection Byproducts and Total Organic Halogen to Calculated Toxicity." Environ. Sci. Technol., 53 (10) : 5987-5999 (2019)


Terry, L.G., and Summers R.S. "Biodegradable organic matter and rapid-rate biofilter performance: A review," Water Research no. 128:234-245 (2018.)

Greiner, B.G, Shimabuku, K.K., Summers, R.S. Influence of Biochar Thermal Regeneration on Sulfamethoxazole and Dissolved Organic Matter Adsorption. Environmental Science: Water Research & Technology, 4, 169 – 174 (2018).

Jones, C.H., L.G. Terry, R.S. Summers, S.M. Cook, Environmental life cycle comparison of conventional and biological filtration alternatives for drinking water treatment, Environ. Sci.: Water Res. Technol., 4, 1464-1479 (2018).

Brown, J., Summers, R. S., Dickenson, E., Upadhyaya, G., Biological removal of hazardous pollutants in drinking water. Hazardous Pollutants in Biological Treatment Systems: Fundamentals and a Guide to Experimental Research edited by F. Çeçen and
U. Tezel, IWA  Publishing, London, 2018


  • Shimabuku, K.K., Kennedy, A.M., Mulhern, R.E. & Summers, R.S. “Evaluating activated carbon adsorption of DOM and micropollutants using fluorescence spectroscopy.” Environ. Sci. Technol, 51 (5), 2676-2684 (2017). DOI: 10.1021/acs.est.6b04911
  • Hohner, A., Terry, P.L., Townsend*, E., Summers, R.S. & Rosario-Ortiz, F.L. “Water treatment process evaluation of wildfire-affected sediment leachates. Environmental Science: Water Research & Technology, 3 (2): 352-365 (2017). DOI: 10.1039/C6EW00247A.
  • Kennedy, A.M., Reinert, A.M., Knappe D.R.U. & Summers, R.S. “Prediction of Full-Scale GAC Adsorption of Organic Micropollutants.” Environmental Engineering Science, 34(7): 496-507 (2017).
  • Shimabuku K.K., Paige* J.M., Luna-Aguero* M. & Summers R.S. "Simplified Modeling of Organic Contaminant Adsorption by Activated Carbon and Biochar in the Presence of Dissolved Organic Matter and Other Competing Adsorbates." Environ. Sci. Technol, 51 (17) 10031-10040 (2017).
  • Mulhern, R., Dickenson, E. & Summers, R.S. “Evaluating and modeling the activated carbon adsorption of wastewater-derived N-nitrosodimethylamine precursors” Environmental Science: Water Research & Technology, 3 (5), 844-856 (2017). DOI: 10.1039/C7EW00123A.
  • Thompson, K.A., Summers, R.S. & Cook, S.M. "Development and experimental validation of the composition and treatability of a new synthetic bathroom greywater (SynGrey)." Environmental Science: Water Research & Technology. 3(6), 1120-1131(2017). DOI:10.1039/C7EW00304H..
  • Seidel C.J., Samson C.C., Bartrand T., Ergul A., & Summers R.S. "Disinfection Byproduct Occurrence at Large Water Systems after Stage 2 DBPR." J. Amer. Water Works Assoc. 109 (7), 17-30 (2017).
  • Samson C.C., Seidel C.J., Summers R.S., & Bartrand T. "Assessment of HAA9 Occurrence and THM, HAA Speciation in the United States." J. Amer. Water Works Assoc. 109 (7), 288-301 (2017).
  • Uleau, J., Summers, R.S. (2017), Revised Third year assessment of a student-based mentorship program for first-year environmental engineering students, Proceedings First-Year Engineering Experience (FYEE) Conference, August 6 – August 8, 2017, Daytona FL.


  • Hohner, A. K., Cawley, K., Oropeza, J., Summers, R. S., & Rosario-Ortiz, F. L. (2016). Drinking water treatment response following a Colorado wildfire. Water Research, 105, 187-198.
  • Samson, C. C., Rajagopalan, B., & Summers, R. S. (2016). Modeling Source Water TOC Using Hydroclimate Variables and Local Polynomial Regression. Environmental Science & Technology, 50(8), 4413-4421.
  • Kempisty, D. M., & Summers, R. S. (2016). Effect of Influent Groundwater Quality on Adsorption of Low Concentrations of 1, 2 Dichloroethane by Granular Activated Carbon. Journal of Environmental Engineering, 142(12), 04016064.
  • Shimabuku, K. K., Kearns, J. P., Martinez*, J. E., Mahoney, R. B., Moreno-Vasquez*, L., & Summers, R. S. (2016). Biochar sorbents for sulfamethoxazole removal from surface water, stormwater, and wastewater effluent. Water Research, 96, 236-245.
  • Thompson, K. A., Shimabuku, K. K., Kearns, J. P., Knappe, D. R., Summers, R. S., & Cook, S. M. (2016). Environmental Comparison of Biochar and Activated Carbon for Tertiary Wastewater Treatment. Environmental Science & Technology, 50(20), 11253-11262.
  • Summers, R.S., Finau-Starkey, L. (2016), Work-in-Progress – Development of a student-based mentorship program for first-year environmental engineering students, 2016 Proceedings First-Year Engineering Experience (FYEE) Conference, Columbus, OH.