Waste residues

While with-in the mobile x-ray system, the waste in the sampler, is contained within a replaceable (and disposable) polyvinyl chloride (PVC) sleeve with a wall thickness of approximately 0.2-inches and a sealed bottom. It was anticipated that the PVC tube or sleeve would, with use, become highly contaminated with waste residues which drip of fall-off the sampler. The sleeve is coated with a conductive coating to prevent static electricity buildup . There are no sources of ignition in this sealed spare. The sampler (and waste) is coupling which includes a positive pressure gasket. This barrier is further isolated by a second barrier consisting of an epoxy coated aluminum sleeve also sealed-off from the main x-ray cabinet and PVC sleeve. There are also no potential sources of ignition in this isolated secondary space as well. 

Vapor-Compression Evaporation and Waste Heat Evaporation. Both of these processes remove water from contaminants rather than contaminants from water. They are better suited for industrial installations where excess energy is available. The water thus produced is of high quaUty and can be used directly. An important advantage is the concentration of waste-residue volume with attendant economies of handling and transportation... 

Another example in the polymers industry is illustrated in Figure 17, which is a process aimed at the batch drying of waste residue with solvent recovery. In this application liquid or viscous waste solutions are pumped into a batch dryer where they are dried under vacuum to a solid granular residue. Vaporized water and solvent are recovered by condensation and then separated by gravity. The process scheme is flexible, offering a range of temperatures and vacuum levels for treating... 

In contrast with the AFC, the PAFC can demonstrate reliable operation with 40 percent to 50 percent system efficiency even when operating on low quality fuels, such as waste residues. This fuel flexibility is enabled by higher temperature operation (200°C vs. 100°C for the AFC) since this raises electro-catalyst tolerance toward impurities. Flowever, the PAFC is still too heavy and lacks the rapid start-up that is nec-essaiy for vehicle applications because it needs preheating to 100°C before it can draw a current. This is unfortunate because the PAFC s operating temperature would allow it to thermally integrate better with a methanol reformer. 

Primary waste generation is small because of the high density nature of the fused salt operations. Nearly all primary waste residues show excellent potential for recycle. (The present main processing sequence for plutonium does not include significant reagent and residue recycle). 

Secondary waste from the processing of waste residue materials is minimal. 

The European Economic Community have shown considerable interest in releasing ferulic acid from low value agricultural waste residues such as SBP, with subsequent bioconversion of the free acid to vanillin. Previous studies with commercial enzyme preparations have shown a high degree of solubilisation of ferulic acid from SBP is possible, giving rise to a mixture of free and esterified forms [9,10], However, it is not known which... 

Treatment facilities have to send similar notifications along with the shipment of treated wastes to disposal facilities. A certification normally accompanies this notification stating that the waste meets its treatment standards and may be land disposed. Disposal facilities are the final link in the waste management chain. As a result, they have to test the waste residue that they receive to ensure that it meets the treatment standards. 

There is some uncertainty about the potential presence of metal in the TCE-contaminated soil of Area 2. If metal concentrations of concern are present, only Alternatives 2 and 5 would protect against direct contact and further groundwater contamination through a cap and incineration, respectively. Incineration of metal-contaminated soil may result in a hazardous waste residue, which would have to be disposed of in a hazardous waste landfill. Alternatives 3 and 4 rely on vapor extraction and would not lower risks from metal to human health or the environment. 

Incineration reduces the volume of hazardous waste by converting solids and liquids to ash. Land disposal of ash, as opposed to untreated hazardous waste, is therefore both safer and more efficient. Incineration, however, will not destroy inorganic compounds, such as metals, present in hazardous waste. Residue ash from incinerators is subject to applicable RCRA standards and may need to be treated for metals or other nonorganic constituents prior to land disposal. 

The first criterion compares the hazardous waste residues to waste residues that would be found if the BIF were not burning hazardous waste at all. A statistical test describes methods that should be used when comparing the waste-derived residues with these baseline levels to determine... 

Robinson T, Chandran B, Nigam P (2002) Effect of pre-treatments of three waste residues, wheat straw, corncobs and barley husks on dye adsorption. Bioresour Technol 85 119-124... 

The storage of solid or liquid toxic waste residues must be considered in the design of the laboratory complex. Whatever temporary storage is selected, such as berms, sheds, etc., it is imperative that a leaking drum not result in chemicals being discharged toward the aquifer. Wastes must not be stored on site for more than 90 days after collection, so the laboratory storage... 

Gutmann, R. 1996. Thermal technologies to convert solid waste residuals into technical glass products. Glastechnische Berichte, 69, 285-299. 

Environmental Impact. Methylene chloride is nonphotochemically reactive and is not listed as an ozone (qv) depleler. Methylene chloride removers can easily be recovered from paint chips and other residue sedimentation, tlius allowing recovery of remover and its continued use. Tins greatly increases the useful life of the remover and, when mixed with fresh remover, eluninates the need for disposing of the used remover. This process requires no special recovery equipment. The high volatility of methylene chloride allows the waste residue from the stripping process to be easily dried, The resulting waste is normally considered hazardous because of the amounts of heavy metals from old finishes. 

The steps in waste destruction are (/) heatup of the waste to its boiling point, (2) vaporization of the waste droplets, (P) heatup of any waste residue to combustion temperature, and (4) destruction by combustion reaction. Destruction of waste species volatilized during the first three steps can begin the moment a species becomes gaseous, because sensible heating of volatilized components is extremely rapid, and need not be considered as a separate step. 

Production of finished aluminum products by industrial facilities typically results in the generation of very large amounts of solid aluminum hydroxide anodizing residues (Saunders 1988). These aluminumanodizing residues are currently classified as nonhazardous under the Federal Resource Conservation and Recovery Act (RCRA) regulations. These residues are typically dewatered to reduce the volume of waste prior to being landfilled. However, the heavy metal content of these solid waste residues can be of... 

Various populations in Missouri were exposed to 2,3,7,8-TCDD in 1971 and 1972 as a result of spraying approximately 29 kg of 2,3,7,8-TCDD-contaminated waste oil on horse arenas, parking lots, and residential roads for dust control (Andrews et al. 1989). The oils originated from an industrial waste residue contaminated with 2,3,7,8-TCDD at levels of 305 ppm (Needham et al. 1991). An exposed group of 51 adults have been the subject of several studies. Adipose tissue levels, as well as paired human serum levels, were measured for 36 of these persons. Sixteen of the individuals were residents of areas where roadways had been sprayed and had mean 2,3,7,8-TCDD adipose tissue levels of 21.1 ppt (range,... 

Ashes and residues. These are the materials remaining from the burning of wood, coal, coke, and other combustible wastes. Residues from power plants normally are composed of fine powdery materials, cinders, clinkers, and small amounts of burned and partially burned materials. Fly ash from coal boilers and CKD (cement kiln dust) are frequently sold for stabilization of waste, waste bulking operations, and incorporation into building products such as gypsum from sulfur dioxide scrubbing. 

Waste, residue and metabolltss from plants, animali and microbes... 

Description of waste residues and information on their safe handling and methods of disposal, including the disposal of any contaminated packaging. ... 

Disposal consideration Possibility of recycling/neutralizing waste residuals, etc. 

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