Decontamination of medical radioisotopes from hard surfaces using peelable polymer-based decontamination agents joint research project with CBI and Colorado State University
Courtesy of KT Chemicals, Inc.
- Need for study:
- Contamination of treatment rooms
- Patient excretion
- The efficacy of:
- 3 peelable decon agents
- removal of 3 medical isotopes
- from 2 surfaces
Methods of Decontamination
- Absorbent pads and powders
- Soap and water
- Liquid decontamination agents
- Peelable decontamination agents
Why Focus on Peelable Decontamination Agents?
- Encapsulation of contamination
- Solid waste
- Low waste volumes
- Saves time
- High efficacy
- Works overnight
Saraca indica leaf powder for decontamination of Pb: removal, recovery, adsorbent characterization ...
The present study explores the effectiveness of Saraca indica leaf powder, a surplus low value agricultural waste, in removing Pb ions from aqueous solution. The influence of pH, biomass dosage, contact time, particle size and metal concentration on the removal process were investigated. Batch studies indicated that maximum biosorption capacity for Pb was 95.37% at the pH 6.5. The sorption process followed the first order rate kinetics. The adsorption equilibrium data fitted best to both Langmuir and Freundlich...
Former Raritan Arsenal
Edison, New Jersey, USA Project Bioremediation of TNT & DNT in Homogenized Soil Summary DARAMEND® bioremediation technology was applied at pilot scale to approximately 100 tons of soil from the former Raritan Arsenal in Edison, New Jersey. Area 4 at the Raritan Arsenal was formerly used as a high explosives salvage and melt-out area from World War I through the 1920s. The Challenge Homogenized soil from the site contained approximately 600 mg/kg of TNT/DNT. The Solution Soil excavated from Area 4 was...
Mitigating Industrial Pollution Along the Atlantic Coast of Cameroon: An Overview of Government ...
This paper presents an overview of the initiatives that have been formulated by the government of Cameroon to address the problem of industrial pollution. It also prescribes robust recommendations that could be employed to save the Atlantic coast of Cameroon from industrial pollutants. After the participation of Cameroon in the Earth Summit in Rio de Janeiro in 1992, the government took a significant step to overhaul its institutional framework, legal framework and policy framework vis-`a-vis the regulation of...
Decontamination Of PCB-Contaminated Equipment for Recycling and Reuse
Facility decommissioning projects often include an environmental component that involves the identification of hazardous building materials and chemicals present at the site, abatement of those materials, and proper disposal. Polychlorinated biphenyls (PCBs) are one chemical hazard that may need to be addressed during the dismantling of older facilities. The continued use and handling of PCB-containing materials are highly regulated, and their disposal can be very expensive. However, decontamination methods may...
Field-Proven Removal of Dissolved Hydrocarbons from Offshore Produced Water by the Macro Porous ...
At the moment there are no field proven technologies available to remove dissolved hydrocarbons (aliphatics and mainly aromatics) from produced water on offshore platforms. Following a joined study of the NOGEPA (The Netherlands Oil and Gas Exploration and Production Association) and the Dutch Government, the Macro Porous Polymer Extraction (MPPE) technology was selected from 55 technologies as one of the most promising one. The MPPE process is removing the aromatics and aliphatics by an extraction process with...
Odor Control Advances at Composting Facility
The Rockland County (New York) Cocomposting Facility began operations in February, 1999, processing biosolids from the five publicly owned treatment works (POTWs) in the county. The Rockland County Solid Waste Management Authority (RCSWMA) owns the facility, but contracted with Waste Management of New York to design, build and operate (DBO) the 110 wet tons/day agitated bin composting facility located in Hilburn. From the earliest stages of development, RCSWMA has focused on odor control provisions for the...
Performance-Based Measurement Systems
Many of the Environmental Protection Agency`s (EPA`s) methods used to monitor air, water and soil for environmental contaminants prescribe step-by-step details on how the chemical analysis must be conducted and prohibit any deviations or variations. The EPA has recognized that monitoring equipment and technology have improved tremendously over the last few years; that environmental media do not always act the same way for each analysis; and that the matrix may affect the analysis and results. The EPA has been...
Environmental Situation in Africa
Abstract Africa The economic and social needs of Africa depends more on its environmental resources but these natural resources are seriously declining and that is really effecting the entire region. Sustainable development in this rapidly changing region has become an imperative, and must take place in the complex context of a diverse and changing ecosystem, political transition and evolution toward market economies. The region is heading towards integrating environmental components into sectors like...
MSW Composting in the United States
Massachusetts became home to two new composting facilities that process MSW and biosolids. Nationally, the total number of operating plants is 19. Since the mid-1980s, BioCycle has been conducting an annual, nationwide survey of municipal solid waste (MSW) composting facilities. From the late 1980s into the early 1990s, when it was projected that landfill capacity would drop and tipping fees would skyrocket, interest in MSW composting was high. About two dozen companies were marketing systems and equipment, and...
Halogenated Volatile Organic Compounds
Sites where halogenated VOCs may be found include burn pits, chemical manufacturing plants or disposal areas, contaminated marine sediments, disposal wells and leach fields, electroplating/metal finishing shops, firefighting training areas, hangars/aircraft maintenance areas, landfills and burial pits, leaking collection and system sanitary lines, leaking storage tanks, radioactive/mixed waste disposal areas, oxidation ponds/lagoons, paint stripping and spray booth areas, pesticide/herbicide mixing areas, solvent...
Incineration Of Chemical Agent Gb And Spent Decontamination Solutions At Tooele Chemical Agent ...
Discussion of trial burn results at The Tooele Chemical Agent Disposal Facility utlizing T-Thermal liquid incinerators.
FIELD PORTABLE X-RAY FLUORESCENCE SPECTROMETRY FOR THE DETERMINATION OF ELEMENTAL CONCENTRATIONS IN ...
The FPXRF technologies described in this method use sealed radioisotope sources to irradiate samples with x-rays. X-ray tubes are used to irradiate samples in the laboratory and are beginning to be incorporated into field portable instruments. When a sample is irradiated with xrays, the source x-rays may undergo either scattering or absorption by sample atoms. This later process is known as the photoelectric effect. When an atom absorbs the source x-rays, the incident radiation dislodges electrons from the...
How Do I Get That Oil Out of There?
It is a common question asked every day by people in all fields of industry. Machine shops, steel mills, industrial manufacturers, and many others are faced with the problem of removing oils from coolants and wastewater on an everyday basis. They are faced with high disposal and maintenance costs. Some manufacturers are charged extreme amounts to have their contaminated water treated properly by their local water treatment facility. Companies look for effective ways to remove the oil from their wastewater or...
Common Treatment Technologies for Radionuclides in Soil, Sediment, and Sludge
Unlike organic contaminants (and similar to metals), radionuclides cannot be destroyed or degraded; therefore, remediation technologies applicable to radionuclides involve separation, concentration/volume reduction, and/or immobilization. The most commonly used treatment technology for radionuclides in soil, sediment, and sludge is solidification/stabilization (S/S). This treatment technology is described briefly below. Solidification processes produce monolithic blocks of waste with high structural integrity....
Thermal Treatment Technologies
Hot gas decontamination: Hot gas decontamination is a technology still in the pilot-scale of development that can be used for decontamination of explosives-contaminated masonry or metallic structures. The method involves sealing and insulating the structures, heating with hot gas stream to 260 °C (500 °F) for a prescribed period of time, volatilizing the explosive contaminants, and destroying them in an afterburner. Operating conditions are site-specific. Contaminants are completely destroyed. Incineration:...
Properties and Behavior of Explosives
Information presented for SVOCs may also be appropriate for many of the contaminants presented in this subsection. The term `explosive waste` commonly is used to refer to propellants, explosives, and pyrotechnics (PEP), which technically fall into the more general category of energetic materials. These materials are susceptible to initiation, or self-sustained energy release, when present in sufficient quantities and exposed to stimuli such as heat, shock, friction, chemical incompatibility, or electrostatic...