Detlef Knappe

Hopkins, Z. R., & Knappe, D. R. U. (2024). Predicting per- and polyfluoroalkyl substances removal in pilot-scale granular activated carbon adsorbers from rapid small-scale column tests. AWWA WATER SCIENCE, 6(2). https://doi.org/10.1002/aws2.1369

Cheng, L., & Knappe, D. R. U. (2024). Removal of Per- and Polyfluoroalkyl substances by anion exchange resins: Scale-up of rapid small-scale column test data. WATER RESEARCH, 249. https://doi.org/10.1016/j.watres.2023.120956

Weaver, L. M. M., Alexander, N. L., Cubeta, M. A., Knappe, D. R. U., & Aziz, T. N. (2023). Degradation of imidacloprid by Phanerodontia chrysosporium on wood chips for stormwater treatment. ENVIRONMENTAL SCIENCE-WATER RESEARCH & TECHNOLOGY, 9(12), 3333–3343. https://doi.org/10.1039/d3ew00545c

Wallis, D. J., Kotlarz, N., Knappe, D. R. U., Collier, D. N., Lea, C. S., Reif, D., … Hoppin, J. A. (2023). Estimation of the Half-Lives of Recently Detected Per- and Polyfluorinated Alkyl Ethers in an Exposed Community. ENVIRONMENTAL SCIENCE & TECHNOLOGY, 57(41), 15348–15355. https://doi.org/10.1021/acs.est.2c08241

Cuffney, M., Wilkie, A. A., Kotlarz, N., Knappe, D., Lea, C. S., Collier, D. N., … Hoppin, J. A. (2023). Factors associated with per- and polyfluoroalkyl substances (PFAS) serum concentrations in residents of New Hanover County, North Carolina: The GenX exposure study. ENVIRONMENTAL RESEARCH, 237. https://doi.org/10.1016/j.envres.2023.117020

Nickels, J. L., Genereux, D. P., & Knappe, D. R. U. (2023). Improved Darcian streambed measurements to quantify flux and mass discharge of volatile organic compounds from a contaminated aquifer to an urban stream. JOURNAL OF CONTAMINANT HYDROLOGY, 253. https://doi.org/10.1016/j.jconhyd.2022.104124

Ruyle, B. J., Pickard, H. M., Schultes, L., Fredriksson, F., Heffernan, A. L., Knappe, D. R. U., … Sunderland, E. M. (2023). Interlaboratory Comparison of Extractable Organofluorine Measurements in Groundwater and Eel (<i>Anguilla rostrata</i>): Recommendations for Methods Standardization. ENVIRONMENTAL SCIENCE & TECHNOLOGY, 57(48), 20159–20168. https://doi.org/10.1021/acs.est.3c04560

Zhang, C., Tang, T., & Knappe, D. R. U. (2023, May 24). Oxidation of Per- and Polyfluoroalkyl Ether Acids and Other Per- and Polyfluoroalkyl Substances by Sulfate and Hydroxyl Radicals: Kinetic Insights from Experiments and Models. ENVIRONMENTAL SCIENCE & TECHNOLOGY, Vol. 5. https://doi.org/10.1021/acs.est.3c00947

McElroy, A. C., Ogles, M. E., Hyman, M. R., & Knappe, D. R. U. (2023). Pilot-scale biofiltration of 1,4-dioxane at drinking water-relevant concentrations. WATER RESEARCH, 231. https://doi.org/10.1016/j.watres.2023.119652

Stults, J. F., Choi, Y. J., Rockwell, C., Schaefer, C. E., Nguyen, D. D., Knappe, D. R. U., … Higgins, C. P. (2023, March 24). Predicting Concentration- and Ionic-Strength-Dependent Air-Water Interfacial Partitioning Parameters of PFASs Using Quantitative Structure-Property Relationships (QSPRs). ENVIRONMENTAL SCIENCE & TECHNOLOGY, Vol. 3. https://doi.org/10.1021/acs.est.2c07316

Fang, Y., Meng, P., Schaefer, C., & Knappe, D. R. U. (2023). Removal and destruction of perfluoroalkyl ether carboxylic acids (PFECAs) in an anion exchange resin and electrochemical oxidation treatment train. WATER RESEARCH, 230. https://doi.org/10.1016/j.watres.2022.119522

Wallis, D. J., Barton, K. E., Knappe, D. R. U., Kotlarz, N., McDonough, C. A., Higgins, C. P., … Adgate, J. L. (2023). Source apportionment of serum PFASs in two highly exposed communities. SCIENCE OF THE TOTAL ENVIRONMENT, 855. https://doi.org/10.1016/j.scitotenv.2022.158842

Guelfo, J., Ferguson, P., Beck, J., Chernick, M., Doria-Manzur, A., Faught, P., … Shojaei, M. (2023, August 1). The dirty side of clean energy: Lithium ion batteries as a source of PFAS in the environment. https://doi.org/10.21203/rs.3.rs-3150504/v1

Pétré, M.-A., Genereux, D. P., Koropeckyj-Cox, L., Knappe, D. R. U., Duboscq, S., Gilmore, T. E., & Hopkins, Z. R. (2022). Correction to “Per- and Polyfluoroalkyl Substance (PFAS) Transport from Groundwater to Streams near a PFAS Manufacturing Facility in North Carolina, USA.” Environmental Science & Technology, 56(12), 9145–9145. https://doi.org/10.1021/acs.est.2c03111

Hosseini, P., McElroy, A., Knappe, D. R. U., Gabr, M., & Pour-Ghaz, M. (2022). Diffusion of benzene and tetrachloroethylene through saturated cement paste. Construction and Building Materials, 329, 127196. https://doi.org/10.1016/j.conbuildmat.2022.127196

Rosen, E. M., Kotlarz, N., Knappe, D. R. U., Lea, C. S., Collier, D. N., Richardson, D. B., & Hoppin, J. A. (2022). Drinking Water-Associated PFAS and Fluoroethers and Lipid Outcomes in the GenX Exposure Study. ENVIRONMENTAL HEALTH PERSPECTIVES, 130(9). https://doi.org/10.1289/EHP11033

Meng, P., DeStefano, N. J., & Knappe, D. R. U. (2022). Extraction and Matrix Cleanup Method for Analyzing Novel Per- and Polyfluoroalkyl Ether Acids and Other Per- and Polyfluoroalkyl Substances in Fruits and Vegetables. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY, 70(16), 4792–4804. https://doi.org/10.1021/acs.jafc.1c07665

Kempisty, D. M., Arevalo, E., Spinelli, A. M., Edeback, V., Dickenson, E. R. V., Husted, C., … Knappe, D. R. U. (2022). Granular activated carbon adsorption of perfluoroalkyl acids from ground and surface water. AWWA Water Science. https://doi.org/10.1002/aws2.1269

Vatankhah, H., Tajdini, B., Milstead, R. P., Clevenger, E., Murray, C., Knappe, D., … Bellona, C. (2022). Impact of ozone-biologically active filtration on the breakthrough of Perfluoroalkyl acids during granular activated carbon treatment of municipal wastewater effluent. WATER RESEARCH, 223. https://doi.org/10.1016/j.watres.2022.118988

Zhi, Y., Paterson, A. R., Call, D. F., Jones, J. L., Hesterberg, D., Duckworth, O. W., … Knappe, D. R. U. (2022). Mechanisms of orthophosphate removal from water by lanthanum carbonate and other lanthanum-containing materials. SCIENCE OF THE TOTAL ENVIRONMENT, 820. https://doi.org/10.1016/j.scitotenv.2022.153153

Crimi, M., Speth, T. F., Chowdhury, Z. K., Dickenson, E. R. V., Knappe, D. R. U., & Liu, J. (2022, September). PFAS Challenges and Novel Research A Conversation With the Editorial Board of the AWWA Water Science Topical Collection on PFAS Analytics and Treatment. JOURNAL AWWA, Vol. 114, pp. 13–22. https://doi.org/10.1002/awwa.1956

Speth, T., Crimi, M., Chowdhury, Z., Dickenson, E., Guelfo, J., Knappe, D., … Leeson, A. (2022). PFAS are forever? The state of the science and research needs for analyzing and treating PFAS‐laden water. AWWA Water Science. https://doi.org/10.1002/aws2.1276

Petre, M.-A., Salk, K. R., Stapleton, H. M., Ferguson, P. L., Tait, G., Obenour, D. R., … Genereux, D. P. (2022). Per- and polyfluoroalkyl substances (PFAS) in river discharge: Modeling loads upstream and downstream of a PFAS manufacturing plant in the Cape Fear watershed, North Carolina. SCIENCE OF THE TOTAL ENVIRONMENT, 831. https://doi.org/10.1016/j.scitotenv.2022.154763

Evich, M. G., Davis, M. J. B., McCord, J. P., Acrey, B., Awkerman, J. A., Knappe, D. R. U., … Washington, J. W. (2022). [Review of Per- and polyfluoroalkyl substances in the environment]. SCIENCE, 375(6580), 512-+. https://doi.org/10.1126/science.abg9065

Zhang, C., McElroy, A. C., Liberatore, H. K., Alexander, N. L. M., & Knappe, D. R. U. (2022). Stability of Per- and Polyfluoroalkyl Substances in Solvents Relevant to Environmental and Toxicological Analysis br. ENVIRONMENTAL SCIENCE & TECHNOLOGY, 56(10), 6103–6112. https://doi.org/10.1021/acs.est.1c03979

Parker, B. A., Knappe, D. R. U., Titaley, I. A., Wanzek, T. A., & Field, J. A. (2022). Tools for Understanding and Predicting the Affinity of Per- and Polyfluoroalkyl Substances for Anion-Exchange Sorbents br. ENVIRONMENTAL SCIENCE & TECHNOLOGY, 56(22), 15470–15477. https://doi.org/10.1021/acs.est.1c08345

Kearns, J., Dickenson, E., Aung, M. T., Joseph, S. M., Summers, S. R., & Knappe, D. (2021). Biochar Water Treatment for Control of Organic Micropollutants with Ultraviolet A Surrogate Monitoring. ENVIRONMENTAL ENGINEERING SCIENCE, 38(5), 298–309. https://doi.org/10.1089/ees.2020.0173

Dodds, J. N., Alexander, N. L. M., Kirkwood, K. I., Foster, M. K. R., Hopkins, Z. R., Knappe, D. R. U., & Baker, E. S. (2021). [Review of From Pesticides to Per- and Polyfluoroalkyl Substances: An Evaluation of Recent Targeted and Untargeted Mass Spectrometry Methods for Xenobiotics]. ANALYTICAL CHEMISTRY, 93(1), 641–656. https://doi.org/10.1021/acs.analchem.0c04359

Zhi, Y., Call, D. F., Grieger, K. D., Duckworth, O. W., Jones, J. L., & Knappe, D. R. U. (2021). Influence of natural organic matter and pH on phosphate removal by and filterable lanthanum release from lanthanum-modified bentonite. Water Research, 202, 117399. https://doi.org/10.1016/j.watres.2021.117399

Mulhern, R., Bynum, N., Liyanapatirana, C., DeStefano, N. J., Knappe, D. R. U., & Gibson, J. M. D. (2021). Longitudinal assessment of point‐of‐use carbon filters for removal of per‐ and polyfluoroalkyl substances from private well water. AWWA Water Science, 3(6). https://doi.org/10.1002/aws2.1262

Petre, M.-A., Genereux, D. P., Koropeckyj-Cox, L., Knappe, D. R. U., Duboscq, S., Gilmore, T. E., & Hopkins, Z. R. (2021). Per- and Polyfluoroalkyl Substance (PFAS) Transport from Groundwater to Streams near a PFAS Manufacturing Facility in North Carolina, USA. ENVIRONMENTAL SCIENCE & TECHNOLOGY, 55(9), 5848–5856. https://doi.org/10.1021/acs.est.0c07978

Baker, E. S., & Knappe, D. R. U. (2021, December 2). Per- and polyfluoroalkyl substances (PFAS)-contaminants of emerging concern. ANALYTICAL AND BIOANALYTICAL CHEMISTRY, Vol. 12. https://doi.org/10.1007/s00216-021-03811-9

Kwiatkowski, C. F., Andrews, D. Q., Birnbaum, L. S., Bruton, T. A., DeWitt, J. C., Knappe, D. R. U., … Blum, A. (2021). Response to “Comment on Scientific Basis for Managing PFAS as a Chemical Class.” Environmental Science & Technology Letters, 8(2), 195–197. https://doi.org/10.1021/acs.estlett.1c00049

Herkert, N. J., Merrill, J., Peters, C., Bollinger, D., Zhang, S., Hoffman, K., … Stapleton, H. M. (2020). Assessing the Effectiveness of Point-of-Use Residential Drinking Water Filters for Perfluoroalkyl Substances (PFASs). ENVIRONMENTAL SCIENCE & TECHNOLOGY LETTERS, 7(3), 178–184. https://doi.org/10.1021/acs.estlett.0c00004

Merle, T., Knappe, D. R. U., Pronk, W., Vogler, B., Hollender, J., & Gunten, U. (2020). Assessment of the breakthrough of micropollutants in full-scale granular activated carbon adsorbers by rapid small-scale column tests and a novel pilot-scale sampling approach. ENVIRONMENTAL SCIENCE-WATER RESEARCH & TECHNOLOGY, 6(10), 2742–2751. https://doi.org/10.1039/d0ew00405g

Hosseini, P., Alhomair, S., Faeli, Z., Pour-Ghaz, M., Gabr, M., Knappe, D., & Parker, C. (2020). Degradation Model for the Tensile Strength of PVC and Rubber Gasket Materials Exposed to Benzene and PCE-Saturated Aqueous Solutions. TRANSPORTATION RESEARCH RECORD, 2674(2), 274–283. https://doi.org/10.1177/0361198120906126

Guillette, T. C., McCord, J., Guillette, M., Polera, M. E., Rachels, K. T., Morgeson, C., … Belcher, S. M. (2020). Elevated levels of per- and polyfluoroalkyl substances in Cape Fear River Striped Bass (Morone saxatilis) are associated with biomarkers of altered immune and liver function. ENVIRONMENT INTERNATIONAL, 136. https://doi.org/10.1016/j.envint.2019.105358

Zhi, Y., Zhang, C., Hjorth, R., Baun, A., Duckworth, O. W., Call, D. F., … Grieger, K. (2020). [Review of Emerging lanthanum (III)-containing materials for phosphate removal from water: A review towards future developments]. ENVIRONMENT INTERNATIONAL, 145. https://doi.org/10.1016/j.envint.2020.106115

Kearns, J., Dickenson, E., & Knappe, D. (2020). Enabling Organic Micropollutant Removal from Water by Full-Scale Biochar and Activated Carbon Adsorbers Using Predictions from Bench-Scale Column Data. ENVIRONMENTAL ENGINEERING SCIENCE, 37(7), 459–471. https://doi.org/10.1089/ees.2019.0471

Cuthbertson, A. A., Kimura, S. Y., Liberatore, H. K., Knappe, D. R. U., Stanford, B., Summers, R. S., … Richardson, S. D. (2020). GAC to BAC: Does it make chloraminated drinking water safer? WATER RESEARCH, 172. https://doi.org/10.1016/j.watres.2019.115432

Kotlarz, N., McCord, J., Collier, D., Lea, C. S., Strynar, M., Lindstrom, A. B., … Hoppin, J. A. (2020). Measurement of Novel, Drinking Water-Associated PFAS in Blood from Adults and Children in Wilmington, North Carolina. ENVIRONMENTAL HEALTH PERSPECTIVES, 128(7). https://doi.org/10.1289/EHP6837

Rodowa, A. E., Knappe, D. R. U., Chiang, S.-Y. D., Pohlmann, D., Varley, C., Bodour, A., & Field, J. A. (2020). Pilot scale removal of per- and polyfluoroalkyl substances and precursors from AFFF-impacted groundwater by granular activated carbon. ENVIRONMENTAL SCIENCE-WATER RESEARCH & TECHNOLOGY, 6(4), 1083–1094. https://doi.org/10.1039/c9ew00936a

Dodds, J. N., Hopkins, Z. R., Knappe, D. R. U., & Baker, E. S. (2020). Rapid Characterization of Per- and Polyfluoroalkyl Substances (PFAS) by Ion Mobility Spectrometry-Mass Spectrometry (IMS-MS). Analytical Chemistry, 92(6), 4427–4435. https://doi.org/10.1021/acs.analchem.9b05364

Kwiatkowski, C. F., Andrews, D. Q., Birnbaum, L. S., Bruton, T. A., DeWitt, J. C., Knappe, D. R. U., … Blum, A. (2020). Scientific Basis for Managing PFAS as a Chemical Class. ENVIRONMENTAL SCIENCE & TECHNOLOGY LETTERS, 7(8), 532–543. https://doi.org/10.1021/acs.estlett.0c00255

Zhang, C., Maness, J. C., Cuthbertson, A. A., Kimura, S. Y., Liberatore, H. K., Richardson, S. D., … Knappe, D. R. U. (2020). Treating water containing elevated bromide and iodide levels with granular activated carbon and free chlorine: impacts on disinfection byproduct formation and calculated toxicity. ENVIRONMENTAL SCIENCE-WATER RESEARCH & TECHNOLOGY, 6(12), 3460–3475. https://doi.org/10.1039/d0ew00523a

McElroy, A. C., Hyman, M. R., & Knappe, D. R. U. (2019). 1,4-Dioxane in drinking water: emerging for 40 years and still unregulated. Current Opinion in Environmental Science & Health, 7, 117–125. https://doi.org/10.1016/j.coesh.2019.01.003

Cuthbertson, A. A., Kimura, S. Y., Liberatore, H. K., Summers, R. S., Knappe, D. R. U., Stanford, B. D., … Richardson, S. D. (2019). Does Granular Activated Carbon with Chlorination Produce Safer Drinking Water? From Disinfection Byproducts and Total Organic Halogen to Calculated Toxicity. ENVIRONMENTAL SCIENCE & TECHNOLOGY, 53(10), 5987–5999. https://doi.org/10.1021/acs.est.9600023

Cuthbertson, A. A., Kimura, S. Y., Liberatore, H. K., Summers, R. S., Knappe, D. R. U., Stanford, B. D., … Richardson, S. D. (2019). Does Granular Activated Carbon with Chlorination Produce Safer Drinking Water? From Disinfection Byproducts and Total Organic Halogen to Calculated Toxicity. ENVIRONMENTAL SCIENCE & TECHNOLOGY, 53(10), 5987–5999. https://doi.org/10.1021/acs.est.9b00023

Hess, B. J., Kolar, P., Classen, J. J., Knappe, D., & Cheng, J. J. (2019). Effects of Co-occurring Species Present in Swine Lagoons on Adsorption of Copper on Eggshell. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH, 13(4), 613–622. https://doi.org/10.1007/s41742-019-00203-x

Zhang, C., Hopkins, Z. R., McCord, J., Strynar, M. J., & Knappe, D. R. U. (2019). Fate of Per- and Polyfluoroalkyl Ether Acids in the Total Oxidizable Precursor Assay and Implications for the Analysis of Impacted Water. Environmental Science & Technology Letters, 6(11), 662–668. https://doi.org/10.1021/acs.estlett.9b00525

Kearns, J. P., Shimabuku, K. K., Knappe, D. R. U., & Summers, R. S. (2019). High Temperature Co-pyrolysis Thermal Air Activation Enhances Biochar Adsorption of Herbicides from Surface Water. ENVIRONMENTAL ENGINEERING SCIENCE, 36(6), 710–723. https://doi.org/10.1089/ees.2018.0476

Hess, B. J., Kolar, P., Classen, J. J., Knappe, D., & Cheng, J. J. (2018). Evaluation of Waste Eggshells for Adsorption of Copper from Synthetic and Swine Wastewater. Transactions of the ASABE, 61(3), 967–976. https://doi.org/10.13031/trans.12599

Cotton, C., Collins, J., Knappe, D. R. U., Linden, K., Brown, J., Upadhyaya, G., & Ponturo, P. (2018). Evaluation of cVOC Removal Efficiencies by Various Technologies (Executive Summary No. 4492). Denver, Colorado: Water Research Foundation.

Hopkins, Z. R., Sun, M., DeWitt, J. C., & Knappe, D. R. U. (2018). Recently Detected Drinking Water Contaminants: GenX and Other Per- and Polyfluoroalkyl Ether Acids. Journal - American Water Works Association, 110(7), 13–28. https://doi.org/10.1002/awwa.1073

Kennedy, A. M., Reinert, A. M., Knappe, D. R. U., & Summers, R. S. (2017). Prediction of Full-Scale GAC Adsorption of Organic Micropollutants. ENVIRONMENTAL ENGINEERING SCIENCE, 34(7), 496–507. https://doi.org/10.1089/ees.2016.0525

Wu, G., Wu, G., Zhang, Q., & Knappe, D. R. U. (2017). Study on adsorption process and mechanism of p-nitroaniline on bamboo charcoal. Chinese Journal of Environmental Engineering, 11(1), 251–259. https://doi.org/10.12030/j.cjee.201509119

Sun, M., Lopez-Velandia, C., & Knappe, D. R. U. (2016). Determination of 1,4-Dioxane in the Cape Fear River Watershed by Heated Purge-and-Trap Preconcentration and Gas Chromatography-Mass Spectrometry. ENVIRONMENTAL SCIENCE & TECHNOLOGY, 50(5), 2246–2254. https://doi.org/10.1021/acs.est.5b05875

Thompson, K. A., Shimabuku, K. K., Kearns, J. P., Knappe, D. R. U., 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. https://doi.org/10.1021/acs.est.6b03239

Knappe, D. R. U., Ingham, R. S., Moreno-Barbosa, J., Sun, M., Summers, R. S., & Dougherty, T. (2016). Evaluation of Henry’s Law Constants and Freundlich Adsorption Constants for VOCs (Executive Summary No. 4462). Denver, Colorado: Water Research Foundation.

Sun, M., Arevalo, E., Strynar, M., Lindstrom, A., Richardson, M., Kearns, B., … Knappe, D. R. U. (2016). Legacy and Emerging Perfluoroalkyl Substances Are Important Drinking Water Contaminants in the Cape Fear River Watershed of North Carolina. ENVIRONMENTAL SCIENCE & TECHNOLOGY LETTERS, 3(12), 415–419. https://doi.org/10.1021/acs.estlett.6b00398

Chowdhury, Z., Porter, K. L., Collins, J., Francis, C., Sriboonlue, S., Cornwell, D., … Knappe, D. R. U. (2016). Survey of Existing VOC Treatment Installations (Executive Summary No. 4453). Denver, Colorado: Water Research Foundation.

Lindsay, A., Byrns, B., Knappe, D., & Shannon, S. (2015). Characterization of atmospheric pressure rf discharges with aqueous plasma facing surfaces. ICOPS/BEAMS 2014 - 41st IEEE International Conference on Plasma Science and the 20th International Conference on High-Power Particle Beams. https://doi.org/10.1109/PLASMA.2014.7012279

Kearns, J. P., Knappe, D. R. U., & Summers, R. S. (2015). Feasibility of Using Traditional Kiln Charcoals in Low-Cost Water Treatment: Role of Pyrolysis Conditions on 2,4-D Herbicide Adsorption. ENVIRONMENTAL ENGINEERING SCIENCE, 32(11), 912–921. https://doi.org/10.1089/ees.2015.0243

Kennedy, A. M., Reinert, A. M., Knappe, D. R. U., Ferrer, I., & Summers, R. S. (2015). Full- and pilot-scale GAC adsorption of organic micropollutants. WATER RESEARCH, 68, 238–248. https://doi.org/10.1016/j.watres.2014.10.010

Kearns, J. P., Shimabuku, K. K., Mahoney, R. B., Knappe, D. R. U., & Summers, R. S. (2015). Meeting multiple water quality objectives through treatment using locally generated char: improving organoleptic properties and removing synthetic organic contaminants and disinfection by-products. JOURNAL OF WATER SANITATION AND HYGIENE FOR DEVELOPMENT, 5(3), 359–372. https://doi.org/10.2166/washdev.2015.172

Dudley, L. A., Arevalo, E. C., & Knappe, D. R. U. (2015). Removal of perfluoroalkyl substances by PAC adsorption and anion exchange (Executive Summary No. 4344). Denver, Colorado: Water Research Foundation.

Summers, R. S., Kempisty, D., Daugherty, T., & Knappe, D. (2015). Removal of volatile organic contaminants (VOCs) from drinking water via granular activated carbon treatment (Final Report No. 4440). Denver, Colorado: Water Research Foundation.

Kearns, J. P., Wellborn, L. S., Summers, R. S., & Knappe, D. R. U. (2014). 2,4-D adsorption to biochars: Effect of preparation conditions on equilibrium adsorption capacity and comparison with commercial activated carbon literature data. WATER RESEARCH, 62, 20–28. https://doi.org/10.1016/j.watres.2014.05.023

Summers, R. S., Kennedy, A. M., Knappe, D. R. U., Reinert, A. M., Fotta, M. E., Mastropole, A. J., … Roccaro, J. (2014). Evaluation of Available Scale-up Approaches for the Design of GAC Contactors (Final Report No. 4235). Denver, Colorado: Water Research Foundation.

Lindsay, A., Byrns, B., King, W., Andhvarapou, A., Fields, J., Knappe, D., … Shannon, S. (2014). Fertilization of Radishes, Tomatoes, and Marigolds Using a Large-Volume Atmospheric Glow Discharge. Plasma Chemistry and Plasma Processing, 34(6), 1271–1290. https://doi.org/10.1007/s11090-014-9573-x

Kearns, J. P., Bentley, M. J., Mokashi, P., Redmon, J. H., & Levine, K. (2014). Synthetic organic water contaminants in developing communities: an overlooked challenge addressed by adsorption with locally generated char. JOURNAL OF WATER SANITATION AND HYGIENE FOR DEVELOPMENT, 4(3), 422–436. https://doi.org/10.2166/washdev.2014.073

Dunn, S. E., & Knappe, D. R. U. (2013). DBP Precursor and Micropollutant Removal by Powdered Activated Carbon (Executive Summary No. 4294). Denver, Colorado: Water Research Foundation.

Kovalova, L., Knappe, D. R. U., Lehnberg, K., Kazner, C., & Hollender, J. (2013). Removal of highly polar micropollutants from wastewater by powdered activated carbon. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH, 20(6), 3607–3615. https://doi.org/10.1007/s11356-012-1432-9

Chen, Y., Knappe, D. R. U., & Barlaz, M. A. (2013). The effect of aging on the bioavailability of toluene sorbed to municipal solid waste components. CHEMOSPHERE, 90(2), 251–259. https://doi.org/10.1016/j.chemosphere.2012.06.062

Kempisty, D. M., Summers, R. S., & Knappe, D. (2013). The effect of background matrix and competition of GAC Adsorption of Carcinogenic VOCs in Natural Waters. 2013 Water Quality Technology Conference and Exposition, WQTC 2013. Retrieved from http://www.scopus.com/inward/record.url?eid=2-s2.0-84890544639&partnerID=MN8TOARS

Kennedy, A., Reinert, A., Knappe, D., & Summers, R. S. (2013). Understanding and predicting the adsorption of trace organic micropollutants by granular activated carbon. 2013 Water Quality Technology Conference and Exposition, WQTC 2013. Retrieved from http://www.scopus.com/inward/record.url?eid=2-s2.0-84890451391&partnerID=MN8TOARS

Matsui, Y., Yoshida, T., Nakao, S., Knappe, D. R. U., & Matsushita, T. (2012). Characteristics of competitive adsorption between 2-methylisoborneol and natural organic matter on superfine and conventionally sized powdered activated carbons. WATER RESEARCH, 46(15), 4741–4749. https://doi.org/10.1016/j.watres.2012.06.002

Reinert, A. M., Kennedy, A., Scott Summers, R., Ferrer, I., Thurman, M., & Knappe, D. (2012). Comparing scale-up approaches to predict granular activated carbon absorber performance for micropollutant removal. American Water Works Association Annual Conference and Exposition 2012, ACE 2012, 1025–1056. Retrieved from http://www.scopus.com/inward/record.url?eid=2-s2.0-84871574489&partnerID=MN8TOARS

Fotta, M., Roccaro, J., & Knappe, D. R. U. (2012). Effect of activated carbon type on scale-up of adsorbers for volatile organic compound removal from groundwater. American Water Works Association Annual Conference and Exposition 2012, ACE 2012, 3188–3218. Retrieved from http://www.scopus.com/inward/record.url?eid=2-s2.0-84871553369&partnerID=MN8TOARS

Saquing, J. M., Knappe, D. R. U., & Barlaz, M. A. (2012). Fate and transport of phenol in a packed bed reactor containing simulated solid waste. WASTE MANAGEMENT, 32(2), 327–334. https://doi.org/10.1016/j.wasman.2011.09.017

Dudley, L.-A., Lindstrom, A., Strynar, M., Mcmillan, L., & Knappe, D. R. U. (2012). Removal of perfluorinated compounds by powdered activated carbon: Effects of adsorbent and background water characteristics. American Water Works Association Annual Conference and Exposition 2012, ACE 2012, 961–1003. Retrieved from http://www.scopus.com/inward/record.url?eid=2-s2.0-84871533789&partnerID=MN8TOARS

Fotta, M., Roccaro, J., & Knappe, D. R. U. (2012). Scale-up of granular activated carbon adsorbers for volatile organic compound removal from groundwater: Effect of carbon type. Water Quality Technology Conference and Exposition 2012. Retrieved from http://www.scopus.com/inward/record.url?eid=2-s2.0-84890744863&partnerID=MN8TOARS

Kennedy, A., Reinert, A., Summers, R. S., Ferrer, I., Thurman, M., & Knappe, D. R. U. (2012). Scale-up of the GAC adsorption of trace organic compounds. Water Quality Technology Conference and Exposition 2012. Retrieved from http://www.scopus.com/inward/record.url?eid=2-s2.0-84890579082&partnerID=MN8TOARS

Chowdhury, Z., Shaw, J., Knappe, D., Roccaro, J., Randazzo, K., & Roberson, A. (2012). What are the impacts of a cVOC group regulation? Questions answered with a case study at Suffolk County Water Authority. Water Quality Technology Conference and Exposition 2012. Retrieved from http://www.scopus.com/inward/record.url?eid=2-s2.0-84890729349&partnerID=MN8TOARS

Summers, R. S., Knappe, D. R. U., & Snoeyink, V. L. (2011). Adsorption of Organic Compounds by Activated Carbon. In J. K. Edzwald (Ed.), Water quality & treatment : a handbook on drinking water (6th ed.). New York, NY: McGraw-Hill.

Velten, S., Knappe, D. R. U., Traber, J., Kaiser, H.-P., Gunten, U., Boller, M., & Meylan, S. (2011). Characterization of natural organic matter adsorption in granular activated carbon adsorbers. WATER RESEARCH, 45(13), 3951–3959. https://doi.org/10.1016/j.watres.2011.04.047

Dunn, S., Yuncu, B., Ged, E., & Knappe, D. R. U. (2011). Combined disinfectant byproduct precursor and micropollutant removal with superfine powdered activated carbon. Water Quality Technology Conference and Exposition 2011, 2529–2539. Retrieved from http://www.scopus.com/inward/record.url?eid=2-s2.0-84873509681&partnerID=MN8TOARS

Dunn, S., & Knappe, D. R. U. (2011). Effect of powdered activated carbon base material and size on disinfection by-product precursor removal. American Water Works Association Annual Conference and Exposition 2011, ACE 2011, 966–992. Retrieved from http://www.scopus.com/inward/record.url?eid=2-s2.0-84871624478&partnerID=MN8TOARS

Ducoste, J. J., Knappe, D. R. U., & Alpert, S. M. (2011). Evaluation of Computational Fluid Dynamics for Modeling UV-Initiated Advanced Oxidation Processes (Final Report No. 3176). Denver, Colorado: Water Research Foundation.

Corwin, C. J., Kennedy, A., Cardenas, J., Summers, R. S., Mastropole, A., & Knappe, D. (2011). Impact of DOC, EBCT and pretreatment on the GAC adsorption of trace organic contaminants. Water Quality Technology Conference and Exposition 2011, 1038–1043. Retrieved from http://www.scopus.com/inward/record.url?eid=2-s2.0-84873497558&partnerID=MN8TOARS

Dudley, L.-A., Strynar, M., Lindstrom, A., McMillan, L., & Knappe, D. (2011). Removal of perfluorinated compounds by powdered activated carbon: Effect of base material and particle size. Water Quality Technology Conference and Exposition 2011. Retrieved from http://www.scopus.com/inward/record.url?eid=2-s2.0-84873499923&partnerID=MN8TOARS

Baeza, C., & Knappe, D. R. U. (2011). Transformation kinetics of biochemically active compounds in low-pressure UV Photolysis and UV/H2O2 advanced oxidation processes. WATER RESEARCH, 45(15), 4531–4543. https://doi.org/10.1016/j.watres.2011.05.039

Saquing, J. M., Mitchell, L. A., Wu, B., Wagner, T. B., Knappe, D. R. U., & Barlaz, M. A. (2010). Factors Controlling Alkylbenzene and Tetrachloroethene Desorption from Municipal Solid Waste Components. ENVIRONMENTAL SCIENCE & TECHNOLOGY, 44(3), 1123–1129. https://doi.org/10.1021/es9030672

Saquing, J. M., Saquing, C. D., Knappe, D. R. U., & Barlaz, M. A. (2010). Impact of Plastics on Fate and Transport of Organic Contaminants in Landfills. ENVIRONMENTAL SCIENCE & TECHNOLOGY, 44(16), 6396–6402. https://doi.org/10.1021/es101251p

Alpert, S. M., Knappe, D. R. U., & Ducoste, J. J. (2010). Modeling the UV/hydrogen peroxide advanced oxidation process using computational fluid dynamics. WATER RESEARCH, 44(6), 1797–1808. https://doi.org/10.1016/j.watres.2009.12.003

Knappe, D. R. U., Yuncu, B., & Deng, Q. (2010). Removal of 2-Methylisoborneol and Geosmin by High-Silica Zeolites and Zeolite-Enhanced Ozonation (Executive Summary No. Project #3169). Denver, Colorado: Water Research Foundation.

Yuncu, B., & Knappe, D. R. U. (2010). Removal of 2-methylisoborneol and geosmin by zeolite enhanced ozonation. American Water Works Association Annual Conference and Exposition 2010, ACE 2010, Papers. Retrieved from http://www.scopus.com/inward/record.url?eid=2-s2.0-84871413753&partnerID=MN8TOARS

Dunn, S., Deng, Q., Ohno, K., Matsui, Y., & Knappe, D. R. U. (2010). Removal of natural organic matter and trace organic pollutants by superfine powdered activated carbon. Water Quality Technology Conference and Exposition 2010, 2156–2170. Retrieved from http://www.scopus.com/inward/record.url?eid=2-s2.0-84873492183&partnerID=MN8TOARS

Kearns, J. P., Wellborn, L. S., Summers, R. S., & Knappe, D. R. U. (2010). Removal of pesticides from drinking water using indigenous charcoal adsorbents. Water Quality Technology Conference and Exposition 2010, 1401–1408. Retrieved from http://www.scopus.com/inward/record.url?eid=2-s2.0-84873507968&partnerID=MN8TOARS

Deng, Q., Ohno, K., & Knappe, D. (2010). Removal of pharmaceuticals by powdered activated carbon adsorption: Effect of particle size and point of addition. American Water Works Association Annual Conference and Exposition 2010, ACE 2010, Papers. Retrieved from http://www.scopus.com/inward/record.url?eid=2-s2.0-84871451325&partnerID=MN8TOARS

Rosenfeldt, E. J., Baeza, C., & Knappe, D. R. U. (2009). Effect of Free Chlorine Application on Microbial Quality of Drinking Water in Chloraminated Distribution Systems. Journal AWWA, 101(10), 60–70. https://doi.org/10.1002/j.1551-8833.2009.tb09974.x

Rossner, A., Snyder, S. A., & Knappe, D. R. U. (2009). Removal of emerging contaminants of concern by alternative adsorbents. WATER RESEARCH, 43(15), 3787–3796. https://doi.org/10.1016/j.watres.2009.06.009

Teuten, E. L., Saquing, J. M., Knappe, D. R. U., Barlaz, M. A., Jonsson, S., Björn, A., … Takada, H. (2009). Transport and release of chemicals from plastics to the environment and to wildlife. Philosophical Transactions of the Royal Society B: Biological Sciences, 364(1526), 2027–2045. https://doi.org/10.1098/rstb.2008.0284

Teuten, E. L., Saquing, J. M., Knappe, D. R. U., Barlaz, M. A., Jonsson, S., Bjorn, A., … Boonyatumanond, R. (2009). [Review of Transport and release of chemicals from plastics to the environment and to wildlife]. Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences, 364(1526), 2027–2045.

Bartelt-Hunt, S. L., Knappe, D. R. U., & Barlaz, M. A. (2008). A Review of Chemical Warfare Agent Simulants for the Study of Environmental Behavior. Critical Reviews in Environmental Science and Technology, 38(2), 112–136. https://doi.org/10.1080/10643380701643650

Rossner, A., & Knappe, D. R. U. (2008). MTBE adsorption on alternative adsorbents and packed bed adsorber performance. WATER RESEARCH, 42(8-9), 2287–2299. https://doi.org/10.1016/j.watres.2007.12.009

Summers, R. S., Dani, D., Zachman, B., Corwin, C., Blute, N., McGuire, M., & Knappe, D. (2008). MTBE adsorption: Evaluating EBCT, competition and fouling in the microgram/liter range. ACS National Meeting Book of Abstracts, 48(1), 45–49. Retrieved from http://www.scopus.com/inward/record.url?eid=2-s2.0-77955619742&partnerID=MN8TOARS

Knappe, D. R. U., & Yuncu, B. (2008). Use of high-silica zeolites for the targeted removal of taste and odor compounds from drinking water. ACS, Division of Environmental Chemistry - Preprints of Extended Abstracts, 48(1), 65–69. Retrieved from http://www.scopus.com/inward/record.url?eid=2-s2.0-85025618087&partnerID=MN8TOARS

Knappe, D. R. U., Rossner, A., Snyder, S. A., & Strickland, C. (2007). Alternative Adsorbents for the Removal of Polar Organic Contaminants (Executive Summary No. Project #2905). Denver, Colorado: American Water Works Association Research Foundation.

Alpert, S. M., Knappe, D., & Ducoste, J. (2007). Incorporation of micromixing models within CFD simulations describing UV-initiated advanced oxidation processes. American Water Works Association - AWWA Annual Conference and Exposition, ACE 2007, 388–401. Retrieved from http://www.scopus.com/inward/record.url?eid=2-s2.0-84871662252&partnerID=MN8TOARS

Rossner, A., & Knappe, D. R. U. (2007). MTBE adsorption kinetics on alternative adsorbents and packed bed adsorber performance. ACS National Meeting Book of Abstracts. Retrieved from http://www.scopus.com/inward/record.url?eid=2-s2.0-37349024315&partnerID=MN8TOARS

Chen, C., Tayebali, A. A., & Knappe, D. R. U. (2006). A  procedure to quantify organic antistrip additives in asphalt binders and mixes. Journal of Testing and Evaluation, 34(4), 269–274. https://doi.org/10.1520/jte12733

Chun, C., Tayebali, A. A., & Knappe, D. R. U. (2006). A procedure to quantify organic antistrip additives in asphalt binders and mixes. Journal of Testing and Evaluation, 34(4), 269–274. Retrieved from http://www.scopus.com/inward/record.url?eid=2-s2.0-33845239692&partnerID=MN8TOARS

Bartelt-Hunt, S. L., Barlaz, M. A., Knappe, D. R. U., & Kjeldsen, P. (2006). Fate of chemical warfare agents and toxic industrial chemicals in landfills. ENVIRONMENTAL SCIENCE & TECHNOLOGY, 40(13), 4219–4225. https://doi.org/10.1021/es052400y

Chun, C., Tayebali, A. A., & Knappe, D. R. U. (2006). Quantitative Determination of and Effect of Prolonged Heating on Amine-Based Antistrip Additive Contents in Asphalt Binders and Mixes. Journal of the Association of Asphalt Paving Technologists, 75, 1095–1119.

Baeza, C., & Knappe, D. R. U. (2006). Removal of sulfonamides and associated antimicrobial activity by UV photolysis and UV/H2O2 processes. American Water Works Association - AWWA Annual Conference and Exposition, ACE 2006: The World's Water Event, 285–289. Retrieved from http://www.scopus.com/inward/record.url?eid=2-s2.0-84871626879&partnerID=MN8TOARS

Knappe, D. R. U. (2006). Surface chemistry effects in activated carbon adsorption of industrial pollutants. In Interface Science and Technology (Vol. 10, pp. 155–177). https://doi.org/10.1016/s1573-4285(06)80078-5

Knappe, D. R. U., & Campos, A. A. R. (2005). Effectiveness of high-silica zeolites for the adsorption of methyl tertiary-butyl ether from natural water. In Water Science and Technology: Water Supply (Vol. 5, pp. 83–91). Retrieved from http://www.scopus.com/inward/record.url?eid=2-s2.0-31144448170&partnerID=MN8TOARS

Knappe, D. R. U., & Campos, A. A. R. (2005). Effectiveness of high-silica zeolites for the adsorption of methyl tertiaty-butyl ether from natural water. Leading-Edge Technology 2005 - Water Treatment, Vol. 5, pp. 83–91. https://doi.org/10.2166/ws.2005.0042

Quinlivan, P. A., Li, L., & Knappe, D. R. U. (2005). Effects of activated carbon characteristics on the simultaneous adsorption of aqueous organic micropollutants and natural organic matter. WATER RESEARCH, 39(8), 1663–1673. https://doi.org/10.1016/j.watres.2005.01.029

Knappe, D. R. U. (2005). Effects of sorbent structure and chemistry on organic contaminant sorption: Activated carbon perspective. ACS, Division of Environmental Chemistry - Preprints of Extended Abstracts, 45(2), 426–432. Retrieved from http://www.scopus.com/inward/record.url?eid=2-s2.0-32244435339&partnerID=MN8TOARS

Li, L., Quinlivan, P. A., & Knappe, D. R. U. (2005). Predicting adsorption isotherms for aqueous organic micropollutants from activated carbon and pollutant properties. ENVIRONMENTAL SCIENCE & TECHNOLOGY, 39(9), 3393–3400. https://doi.org/10.1021/es048816d

Knappe, D. R. U. (2004). Algae detection and removal strategies for drinking water treatment plants. Denver Colo.: AWWA Research Foundation and American Water Works Association.

Chen, L. X., Nanny, M. A., Knappe, D. R. U., Wagner, T. B., & Ratasuk, N. (2004). Chemical characterization and sorption capacity measurements of degraded newsprint from a landfill. ENVIRONMENTAL SCIENCE & TECHNOLOGY, 38(13), 3542–3550. https://doi.org/10.1021/es0305914

Chen, Y., Knappe, D. R. U., & Barlaz, N. A. (2004). Effect of cellulose/hemicellulose and lignin on the bioavailability of toluene sorbed to waste paper. ENVIRONMENTAL SCIENCE & TECHNOLOGY, 38(13), 3731–3736. https://doi.org/10.1021/es035286x

Badruzzaman, M., Westerhoff, P., & Knappe, D. R. U. (2004). Intraparticle diffusion and adsorption of arsenate onto granular ferric hydroxide (GFH). WATER RESEARCH, 38(18), 4002–4012. https://doi.org/10.1016/j.watres.2004.07.007

Hepplewhite, C., Newcombe, G., & Knappe, D. R. U. (2004). NOM and MIB, who wins in the competition for activated carbon adsorption sites? WATER SCIENCE AND TECHNOLOGY, Vol. 49, pp. 257–265. https://doi.org/10.2166/wst.2004.0584

Hepplewhite, C., Newcombe, G., & Knappe, D. R. U. (2004). NOM and MIB, who wins in the competition for activated carbon adsorption sites? In Water Science and Technology (Vol. 49, pp. 257–265). Retrieved from http://www.scopus.com/inward/record.url?eid=2-s2.0-3042814758&partnerID=MN8TOARS

Knappe, D. R. U., Li, L., Quinlivan, P. A., & Wagner, T. B. (2003). Effects of Activated Carbon Surface Chemistry and Pore Structure on the Adsorption of Trichloroethene and Methyl Tertiary-Butyl Ether from Natural Water [Executive Summary]. Denver, Colorado: American Water Works Association Research Foundation.

Li, L., Quinlivan, P. A., & Knappe, D. R. U. (2003). Erratum: Effects of activated carbon surface chemistry and pore structure on the adsorption of organic contaminants from aqueous solution (Carbon (2002) 40 (2085-2100) PII: S0008622302000696). Carbon, 41(8), 1693. https://doi.org/10.1016/S0008-6223(03)00121-0

Newcombe, G., Hepplewhite, C., & Knappe, D. (2003). NOM and MIB, who wins in the competition for activated carbon adsorption sites? Water, 30(1), 33–36. Retrieved from http://www.scopus.com/inward/record.url?eid=2-s2.0-0037294576&partnerID=MN8TOARS

Briley, D. S., & Knappe, D. R. U. (2003). Optimizing ferric sulfate coagulation of algae with streaming current measurements. Water Resources Research Institute News of the University of North Carolina, (341). Retrieved from http://www.scopus.com/inward/record.url?eid=2-s2.0-40349083675&partnerID=MN8TOARS

Li, L., Quinlivan, P. A., & Knappe, D. R. U. (2002). Effects of activated carbon surface chemistry and pore structure on the adsorption of organic contaminants from aqueous solution. CARBON, 40(12), 2085–2100. https://doi.org/10.1016/S0008-6223(02)00069-6

Newcombe, G., Morrison, J., Hepplewhite, C., & Knappe, D. R. U. (2002). In the (adsorption) competition between NOM and MIB, who is the winner, and why? Water Science and Technology: Water Supply, 2(2), 59–67. https://doi.org/10.2166/ws.2002.0046

Briley, D. S., & Knappe, D. R. U. (2002). Optimizing ferric sulfate coagulation of algae with streaming current measurements. Journal / American Water Works Association, 94(2), 80–90. https://doi.org/10.1002/j.1551-8833.2002.tb09409.x

Matsui, Y., Knappe, D. R. U., & Takagi, R. (2002). Pesticide adsorption by granular activated carbon adsorbers. 1. Effect of natural organic matter preloading on removal rates and model simplification. ENVIRONMENTAL SCIENCE & TECHNOLOGY, 36(15), 3426–3431. https://doi.org/10.1021/es0113652

Matsui, Y., Knappe, D. R. U., Iwaki, K., & Ohira, H. (2002). Pesticide adsorption by granular activated carbon adsorbers. 2. Effects of pesticide and natural organic matter characteristics on pesticide breakthrough curves. ENVIRONMENTAL SCIENCE & TECHNOLOGY, 36(15), 3432–3438. https://doi.org/10.1021/es011366u

Newcombe, G., Morrison, J., Hepplewhite, C., & Knappe, D. R. U. (2002). Simultaneous adsorption of MIB and NOM onto activated carbon - II. Competitive effects. CARBON, 40(12), 2147–2156. https://doi.org/10.1016/S0008-6223(02)00098-2

Jun, H. B., Lee, Y. L., Lee, B. D., & Knappe, D. R. U. (2001). Effectiveness of coagulants and coagulant aids for the removal of filter-clogging Synedra. JOURNAL OF WATER SUPPLY RESEARCH AND TECHNOLOGY-AQUA, 50(3), 135–148. https://doi.org/10.2166/aqua.2001.0013

Jun, H.-B., Lee, Y.-J., Lee, B.-D., & Knappe, D. R. U. (2001). Effectiveness of coagulants and coagulant aids for the removal of filter-clogging synedra. Journal of Water Supply: Research and Technology - AQUA, 50(3), 135–148. Retrieved from http://www.scopus.com/inward/record.url?eid=2-s2.0-0034986285&partnerID=MN8TOARS

Li, L., Quinlivan, P. A., & Knappe, D. R. U. (2001). Effects of activated carbon surface chemistry and pore structure on the adsorption of MTBE from natural water. ACS Division of Environmental Chemistry, Preprints, 41(2), 448–453. Retrieved from http://www.scopus.com/inward/record.url?eid=2-s2.0-23844487615&partnerID=MN8TOARS

Wu, B. Y., Taylor, C. M., Knappe, D. R. U., Nanny, M. A., & Barlaz, M. A. (2001). Factors controlling alkylbenzene sorption to municipal solid waste. ENVIRONMENTAL SCIENCE & TECHNOLOGY, 35(22), 4569–4576. https://doi.org/10.1021/es010893a

Sanin, F., Knappe, D. R. U., & Barlaz, M. A. (2000). The fate of toluene, acetone and 1,2-dichloroethane in a laboratory-scale simulated landfill. Water Research, 34(12), 3063–3074. https://doi.org/10.1016/S0043-1354(00)00084-1

Knappe, D. R. U., Snoeyink, V. L., Roche, P., Prados, M. J., & Bourbigot, M. M. (1999). Atrazine removal by preloaded GAC. JOURNAL AMERICAN WATER WORKS ASSOCIATION, 91(10), 97–109. https://doi.org/10.1002/j.1551-8833.1999.tb08719.x

Knappe, D. R. U., Snoeyink, V. L., Röche, P., Prados, M. J., & Bourbigot, M.-M. (1999). Atrazine removal by preloaded GAG. Journal / American Water Works Association, 91(10), 97–109. Retrieved from http://www.scopus.com/inward/record.url?eid=2-s2.0-0032620092&partnerID=MN8TOARS

Briley, D. S., & Knappe, D. R. U. (1998). Optimization of coagulation conditions for the removal of algae. Proceedings of the American Water Works Association Annual Conference, Dallas, TX, June 21-25, 1998, 90(1998 June).

Knappe, D. R. U., Matsui, Y., Snoeyink, V. L., Roche, P., Prados, M. J., & Bourbigot, M. M. (1998). Predicting the capacity of powdered activated carbon for trace organic compounds in natural waters. ENVIRONMENTAL SCIENCE & TECHNOLOGY, 32(11), 1694–1698. https://doi.org/10.1021/es970833y

Knappe, D. R. U., Briley, D. S., & Rastogi, N. (1998). Strategies for algae removal in conventional treatment. Proceedings of the American Water Works Association Annual Conference, Dallas, TX, June 21-25, 1998, 90(1998 June).

Knappe, D. (1998). Strategies for algae removal in drinking water treatment. In Report (Water Resources Research Institute of the University of North Carolina). Raleigh, NC: University of North Carolina Water Resources Research Institute.

Sanin, F. D., Barlaz, M. A., & Knappe, D. R. U. (1998). Toluene sorption, humification and biodegradation in excavated refuse: A high organic carbon sorbent. 1998 Spring Meeting, American Geophysical Union, Boston, MA, May 26-29, 1998, (1998 May).

Knappe, D. R. U., Snoeyink, V. L., Roche, P., Prados, M. J., & Bourbigot, M. M. (1997). The effect of GAC service time on the adsorption of periodic episodes of atrazine. Proceedings of the American Water Works Association Annual Conference, Atlanta, GA, June 15-19, 1997, 89(1997 June).

Knappe, D. R. U., Snoeyink, V. L., Roche, P., Prados, M. J., & Bourbigot, M. M. (1997). The effect of preloading on rapid small-scale column test predictions of atrazine removal by GAC adsorbers. WATER RESEARCH, 31(11), 2899–2909. https://doi.org/10.1016/S0043-1354(97)00148-6

Knappe, D. R. U., Snoeyink, V. L., Matsui, Y., Prados, M. J., & Bourbigot, M.-M. (1996). Determining the remaining life of a granular activated carbon (GAC) filter for pesticides. Water Supply, 14(2), 1–14. Retrieved from http://www.scopus.com/inward/record.url?eid=2-s2.0-0029657394&partnerID=MN8TOARS

Knappe, D. R. U., Dagois, G., & DeWolfe, J. R. (1992). Effect of Calcium on Thermal Regeneration of GAC. Journal - American Water Works Association, 84(8), 73–80. https://doi.org/10.1002/j.1551-8833.1992.tb07414.x

Knappe, D. R. U., Snoeyink, V. L., Dagois, G., & DeWolfe, J. R. (1992). Effect of calcium on thermal regeneration of GAC. Journal / American Water Works Association, 84(8), 73–80. Retrieved from http://www.scopus.com/inward/record.url?eid=2-s2.0-0026909410&partnerID=MN8TOARS