Nanotechnology Takes Roots
Nanoscale particles of zero-valent iron with a trace of noble metal catalyst are punching well above their weight in the area of environmental remediation. Their ability to destroy a wide...
Wetlands Treat Mine Runoff
Engineers were asked to design a treatment system for the severely acidic drainage from the Mike Horse and Anaconda metals mines in Montana. Challenges included the mountainous terrain,...
Treatment of Herbicide Contaminated Groundwater to Non-Detectable Concentrations Applying Ultraviolet (UV) Oxidation
Taste and Odor Control in Drinking Water with Potassium Permanganate
Performance of In Situ Chemical Oxidation Field Demonstrations at DOE Sites
Fuel and Cladding Oxidation under Expected Repository Conditions
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...
Greening of Ground Water
As many as 69 different organic compounds and 24 metal species can be found in ground water underlying the 85 acre Bofors-Nobel Superfund site in Muskegon County, Mich., a testimony to...
How to Evaluate and Cost UV/Oxidation Systems
Formation of Natural Analogues in Nuclear Waste Forms: A Geochemical Approach
Aqueous Dissolution Rates of Uranium Oxides
Characterization of Advanced Oxidation Regenerated GACs
Chemical Oxidation of Contaminants in Clay or Sandy Soil
Precipitation Kinetics of Radioactive Elements and Their Effect Upon Redox Conditions of the Nearfield
Preliminary Spent LWR Fuel Oxidation Source Term Model
The Relationship of Speciation to Iron and Manganese Removal Strategies
Case studies are presented describing how Fe and Mn speciation procedures were used to solve process problems at two water utilities. A series of filtration steps are used to separate...
Sensitized Photooxidation of Dissolved Sulfides in Water
The ability of methylene blue (MB) and riboflavin (RF) to sensitize dissolved sulfides for photooxidation was investigated. Both MB and RF were found to be effective sensitizers for the...
Assessment of BNR Systems in Florida
Operating data from eight, full-scale, single-sludge, biological nutrient removal (BNR) wastewater treatment facilities in Florida were collected and evaluated. Three types of BNR facilities...
Automated ORP Control for Aerobic/Anoxic Cycling in Oxidation Ditch Treatment
The 1140 m3/d (0.3 mgd) Grand Coulee, WA. oxidation ditch was modified to incorporate a computer-control anoxic/aerobic cycle operation to investigate...
Arsenic Removal by Manganese Greensand Filters
Some of the small communities in Saskatchewan are expected to have difficulty complying with the new maximum acceptable concentration (MAC) of 25 ?g/L for arsenic. A test column was set...
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