Impacts of CSO Swirl Concentrator on Dissolved Oxygen Concentrations in the Anacostia River
Purpose: To assess impacts of the CSO control, two continuous monitoring stations were located upstream and downstream from the CSO outfall. The monitors recorded dissolved oxygen (DO),...
Microfiltration (MF) Ultrafiltration (UF) Performance with and without Coagulation
Measurement of pH and Redox Potential Distributions in Soil Samples for Remediation of TNT Using Microelectrode Techniques
Evaluating a Proposed Right-of-Way for PCCP
Enhanced Trichloroethene Desorption from Long-Term Contaminated Soil Using Triton X-100 and pH Increases
Laboratory experiments were conducted to study the effect of Triton X-100 and pH changes on trichloroethene (TCE) desorption from field-contaminated soil to water. In laboratory batch...
Specification of Cu, Pb and Cr in Contaminated Sediment Effected by pH
Sediment was sampled from a contaminated river. Sequential extraction was applied to determine the speciations of Cu, Pb, and Cr in the sediment with varied pH (5–9), and the redox potential...
The Nature of Passivity of Reinforcing Steel
Use of NaOH to Control pH for Solubilization of Waste Activated Sludge
Waste activated sludge was collected from the final clarifier of a local municipal wastewater treatment plant. NaOH was used in comparison made of the controlled pH batch experiments with...
Advanced Oxidation Processes for Removal of Natural Organics and Pesticides from Drinking Water
Among the technologies available to deal with the problem of pesticides in drinking water, advanced oxidation processes (AOPs) represent a treatment that has the potential of completely...
Geo-Environmental Testing Using the Envirocone®
Using pH Adjustment to Control Iron Concentrations in the Recovered Water from Aquifer Storage and Recovery (ASR) Wells
Effect of Alkalinity on Copper Corrosion
A Study of Alkalinity Leaching and Residual Strength of Alkaline Stabilized Sludge
The addition of sufficient amounts of quicklime or other alkaline earth oxides to dewatered sludge raises both the pH and temperature of the sludge, resulting in microbial inactivation....
Denitrification Inhibition by High Nitrate Wastes
The adaptation of activated sludge and inhibition of denitrification at high nitrate concentrations was studied using pH controlled bench-scale sequencing batch reactors (SBRs), operated...
Effects of Molecular Oxygen and pH on the Adsorption of Aniline to Activated Carbon
This paper examines the influence of molecular oxygen and pH on the adsorption of aniline to F-300 Calgon Carbon. Molecular oxygen increased the adsorptive capacity of GAC for anilines...
Arsenic Removal Via Softening
The removal of arsenic during softening was investigated using synthetic solutions. Arsenic removal is facilitated by formation of a variety of solids including Mg(OH)2,...
Investigations of Potential Radical Interaction in the Formation of Brominated Organic Compounds in Water
A system has been designed that permits the examination of the formation of organic bromine compounds via a radical pathway. Hydroxyl radicals (HO⋅)...
The Present State-of-the-Art of Immobilization of Hazardous Heavy Metals in Cement-Based Materials
Analysis of Biomass Distribution and Chemical Interactions in Nitrifying Biofilms
Steady-state models of nitrifying biofilms are developed taking into account the mass transfer of neutral and ionic species, electroneutrality, pH-dependent Monod kinetics, chemical equilibrium,...
Neptunium Retardation with Tuffs and Groundwaters from Yucca Mountain
The retardation of neptunium was studied using batch sorption and column techniques. Pure mineral separates, tuffs and groundwaters from Yucca Mountain were used for these experiments....
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