Search Results - "Pressman, Jonathan G"

Three-Dimensional Free Chlorine and Monochloramine Biofilm Penetration: Correlating Penetration with Biofilm Activity and Viability by Lee, Woo Hyoung, Pressman, Jonathan G, Wahman, David G

“…Disinfectant biofilm penetration and its effect on biofilm aerobic activity and viability are still unclear. In this study, free chlorine and monochloramine…”
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Free Chlorine and Monochloramine Application to Nitrifying Biofilm: Comparison of Biofilm Penetration, Activity, and Viability by Lee, Woo Hyoung, Wahman, David G, Bishop, Paul L, Pressman, Jonathan G

“…Biofilm in drinking water systems is undesirable. Free chlorine and monochloramine are commonly used as secondary drinking water disinfectants, but…”
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Distribution System Residuals—Is “Detectable” Still Acceptable for Chloramines? by Wahman, David G., Pressman, Jonathan G.

“…Taking into account what is now known about organic chloramines and distribution system nitrification, it is important to discuss the value of measuring…”
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Monochloramine Disinfection Kinetics of Nitrosomonas europaea by Propidium Monoazide Quantitative PCR and Live/Dead BacLight Methods by Wahman, David G, Wulfeck-Kleier, Karen A, Pressman, Jonathan G

“…Monochloramine disinfection kinetics were determined for the pure-culture ammonia-oxidizing bacterium Nitrosomonas europaea (ATCC 19718) by two…”
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Role of grinding method on granular activated carbon characteristics by Abulikemu, Gulizhaer, Wahman, David G., Sorial, George A., Nadagouda, Mallikarjuna, Stebel, Eva K., Womack, Erika A., Smith, Samantha J., Kleiner, Eric J., Gray, Brooke N., Taylor, Rose D., Gastaldo, Cameron X., Pressman, Jonathan G.

“…•Coconut base and bituminous base GAC were ground with manual and mechanical methods.•The grinding methods used were mortar and pestle, blender, and ball…”
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Occurrence of per- and polyfluoroalkyl substances (PFAS) in source water and their treatment in drinking water by Crone, Brian C., Speth, Thomas F., Wahman, David G., Smith, Samantha J., Abulikemu, Gulizhaer, Kleiner, Eric J., Pressman, Jonathan G.

“…Per- and polyfluoroalkyl substances (PFAS) occurrence in drinking water and treatment methods for their removal are reviewed. PFAS are fluorinated substances…”
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Characterization and application of a chlorine microelectrode for measuring monochloramine within a biofilm by Lee, Woo Hyoung, Pressman, Jonathan G., Wahman, David G., Bishop, Paul L.

“…Chlorine microelectrodes with tip sizes of 5–15 μm were fabricated, fully characterized and evaluated under various environmental conditions, and used to…”
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Evaluation of Monochloramine and Free Chlorine Penetration in a Drinking Water Storage Tank Sediment Using Microelectrodes by Liu, Hong, Wahman, David G, Pressman, Jonathan G

“…Sediment accumulation in water storage tanks may protect microorganisms from disinfectant exposure, causing the degradation of water quality. However,…”
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Simulated distribution nitrification: Nitrification Index evaluation and viable AOB by Schrantz, Karen A., Pressman, Jonathan G., Wahman, David G.

“…Lab-scale reactors were used to evaluate the impact of simultaneously increasing temporal influent monochloramine (NH2Cl) concentrations (0.0 to 3.2 mg/L Cl2)…”
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Determination of the Effects of Medium Composition on the Monochloramine Disinfection Kinetics of Nitrosomonas europaea by the Propidium Monoazide Quantitative PCR and Live/Dead BacLight Methods by Wahman, David G, Schrantz, Karen A, Pressman, Jonathan G

“…Various medium compositions (phosphate, 1 to 50 mM; ionic strength, 2.8 to 150 meq/liter) significantly affected Nitrosomonas europaea monochloramine…”
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Microelectrode evaluation of in situ oxidant reactivity and pH variability at new ductile iron and copper coupon surfaces by Lee, Woo Hyoung, Wahman, David G., Lytle, Darren A., Pressman, Jonathan G., Chung, Jongik

“…•Microelectrodes measured oxidant and pH at new copper and ductile iron surfaces.•Surface reaction rate constants were determined for each oxidant and metal…”
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Modeling PFAS Removal Using Granular Activated Carbon for Full-Scale System Design by Burkhardt, Jonathan B, Burns, Nick, Mobley, Dustin, Pressman, Jonathan G, Magnuson, Matthew L, Speth, Thomas F

“…AbstractPer- and polyfluoroalkyl substances (PFAS) are increasingly of interest to drinking water utilities due to state regulations, the release of federal…”
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Chloramine Concentrations within Distribution Systems and Their Effect on Heterotrophic Bacteria, Mycobacterial Species, and Disinfection Byproducts by Pfaller, Stacy, King, Dawn, Mistry, Jatin H., Alexander, Matthew, Abulikemu, Gulizhaer, Pressman, Jonathan G., Wahman, David G., Donohue, Maura J.

“…•The measured monochloramine residual did not indicate the water's microbial quality.•At locations beyond the entry point (EP), the microbial counts were 2+…”
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Applying microelectrodes to investigate aged ductile iron and copper coupon reactivity during free chlorine application by Liggett, Jennifer E., Gonzalez, Beatriz C., Lytle, Darren A., Pressman, Jonathan G., Dionysiou, Dionysios D., Lee, Woo Hyoung, Harmon, Stephen M., Wahman, David G.

“…•Microelectrodes measured oxidant and pH at aged copper and ductile iron surfaces.•Free chlorine, dissolved oxygen, and pH were measured under flow and…”
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Effects of source and seasonal variations of natural organic matters on the fate and transport of CeO2 nanoparticles in the environment by Li, Zhen, Sahle-Demessie, Endalkachew, Aly Hassan, Ashraf, Pressman, Jonathan G., Sorial, George A., Han, Changseok

“…Natural organic matter (NOM) affects the stability and transport of nanoparticles (NPs) in natural waters by modifying their physiochemical properties. Source…”
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Investigation of Chloramines, Disinfection Byproducts, and Nitrification in Chloraminated Drinking Water Distribution Systems by Abulikemu, Gulizhaer, Mistry, Jatin H., Wahman, David G., Alexander, Matthew T., Kennicutt, Alison R., Bollman, Jacob D., Pressman, Jonathan G.

“…AbstractFour chloraminated drinking water distribution systems (CDWDSs) required to maintain numeric versus “detectable” residuals were spatially and…”
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Biofilm Community Dynamics in Bench-Scale Annular Reactors Simulating Arrestment of Chloraminated Drinking Water Nitrification by Gomez-Alvarez, Vicente, Schrantz, Karen A, Pressman, Jonathan G, Wahman, David G

“…Annular reactors (ARs) were used to study biofilm community succession and provide ecological insight during nitrification arrestment through simultaneously…”
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Effect of free ammonia concentration on monochloramine penetration within a nitrifying biofilm and its effect on activity, viability, and recovery by Pressman, Jonathan G., Lee, Woo Hyoung, Bishop, Paul L., Wahman, David G.

“…Chloramine has replaced free chorine for secondary disinfection at many water utilities because of disinfection by-product (DBP) regulations. Because…”
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Amperometric carbon fiber nitrite microsensor for in situ biofilm monitoring by Lee, Woo Hyoung, Wahman, David G., Pressman, Jonathan G.

“…A highly selective needle type solid state amperometric nitrite microsensor based on direct nitrite oxidation on carbon fiber was developed using a simplified…”
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Metagenomic Profile of Microbial Communities in a Drinking Water Storage Tank Sediment after Sequential Exposure to Monochloramine, Free Chlorine, and Monochloramine by Gomez-Alvarez, Vicente, Liu, Hong, Pressman, Jonathan G, Wahman, David G

“…Sediment accumulation in drinking water storage facilities may lead to water quality degradation, including biological growth and disinfectant decay. The…”
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