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Removal of Toluene from Air Using PAC/Water Slurry Reactor
Publisher: American Society of Civil Engineers
Abstract: A bench‐scale, continuous, stirred‐tank reactor is used to study the removal of a volatile organic compound, toluene, from air through absorption into water and subsequent adsorption onto powdered activated carbon in the ...
Comparing Options for Improving Dissolved Oxygen Below Hydropower Dam
Publisher: American Society of Civil Engineers
Abstract: Many existing dams will have to address issues of minimum dissolved oxygen concentration and minimum flow before they can be relicensed. All new hydropower applications also must address such issues. Although technology ...
Settling of Coal Ashes
Publisher: American Society of Civil Engineers
Abstract: Settling characteristics of coal ashes collected from TVA power plants are studied. Since the interface between a clarified zone and a suspension is not distinctly visible, a graphical method is developed to determine the ...
Case of Lognormally Distributed TPH in Contaminated Soil
Publisher: American Society of Civil Engineers
Abstract: A land-farming project to remove diesel fuel from soil, which showed extremely variable total-petroleum-hydrocarbon (TPH) concentrations, is presented. Experiments showed that the variability was not an artifact of the TPH ...
Reservoir Circulation Patterns and Water Quality
Publisher: American Society of Civil Engineers
Abstract: A two‐dimensional hydrodynamic‐temperature model was applied to Cherokee Reservoir to examine similarities between circulation patterns and observed water quality phenomena. A circulation pattern, involving reverse bottom ...
Mathematical Model of Biofiltration of VOCs: Effect of Nitrate Concentration and Backwashing
Publisher: American Society of Civil Engineers
Abstract: The affect of nitrate concentration and reactor backwashing on biofilter performance is evaluated using a dynamic mathematical model of the biodegradation process of volatile organic compounds in a trickle bed biofilter ...
Removal of Oil and Grease and Chemical Oxygen Demand from Oily Automotive Wastewater by Adsorption after Chemical De-emulsification
Publisher: American Society of Civil Engineers
Abstract: US EPA has proposed new categorical pretreatment standards for the wastewater generated by the Metal Products and Machinery industry, which includes all automotive plants. The oil and grease (O&G) standard (17 mg/L monthly ...
Evaluating Paint-Sludge Chars for Adsorption of Selected Paint Solvents
Publisher: American Society of Civil Engineers
Abstract: At Ford, a study had been carried out to investigate the technical feasibility of converting paint sludge to activated char and reusing the char in paint spray-booth water to capture paint solvents from spray-booth air. ...