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RISDiscussion of “Theoretical Evaluation of UV Reactors in Series” by Y. Lawryshyn and R. Hofmann
Publisher: American Society of Civil Engineers
Discussion of “Prediction and Measurement of Bubble Formation in Water Treatment” by Paolo Scardina and Marc Edwards
Publisher: American Society of Civil Engineers
Discussion of “Modeling Biofilms on Gas-Permeable Supports: Concentration and Activity Profiles” by Neil J. Essila, Michael J. Semmens, and Vaughan R. Voller
Publisher: American Society of Civil Engineers
Discussion of “Rotating-Perforated-Tubes Biofilm Reactor for High-Strength Wastewater Treatment” by Fikret Kargi and Serkan Eker
Publisher: American Society of Civil Engineers
Use of Dubinin–Astakhov Equation to Describe Preloading Effect of Natural Organic Matter
Publisher: American Society of Civil Engineers
Abstract: This note presents a simple model to quantify the preloading effect of naturally occurring organic matter (NOM) in water on the adsorption capacity of activated carbon for a trace synthetic organic chemical (SOC). The model ...
Predicting Minimum Carbon Usage for PAC Adsorption of Trace Organic Contaminants from Natural Water
Publisher: American Society of Civil Engineers
Abstract: Powdered activated carbon (PAC) is an excellent adsorbent for drinking water treatment of many trace organic contaminants. To evaluate and design a PAC adsorption process for a particular application, it is necessary to ...
Discussion of “Clarification of Clean-Bed Filtration Models” by B. E. Logan, D. G. Jewett, R. G. Arnold, E. J. Bouwer, and C. R. O’Melia
Publisher: American Society of Civil Engineers
Modeling Steady-State Biofilms with Dual-Substrate Limitations
Publisher: American Society of Civil Engineers
Abstract: This Technical Note presents a systematic analysis of a steady-state biofilm model for the simultaneous utilization of an electron donor and an electron acceptor. It shows that the flux of the electron donor is balanced ...
Determining Minimum Ion Exchange Resin Usage for NOM Removal
Publisher: American Society of Civil Engineers
Abstract: For the design and analysis of an ion exchange (IEX) process, it is necessary to know the minimum IEX resin usage defined thermodynamically. Anion exchange resin sorption of dissolved natural organic matter (NOM) may follow ...
Isotherm Equation for Water Vapor Adsorption onto Activated Carbon
Publisher: American Society of Civil Engineers
Abstract: A simple isotherm model has been developed for the type-5 equilibrium adsorption systems by considering the effects of both primary and secondary adsorptive sites. The model was applied to interpret experimental data ...