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BICARBONATE OF SODA BLASTING TECHNOLOGY FOR AIRCRAFT WHEEL DEPAINTING
Citation:
Chen, A., L. Smith, AND R. Olfenbuttel. BICARBONATE OF SODA BLASTING TECHNOLOGY FOR AIRCRAFT WHEEL DEPAINTING. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/R-94/127 (NTIS PB94193323), 1994.
Description:
This evaluation addressed product quality, waste reduction/pollution prevention and economics in replacing chemical solvent strippers with a bicarbonate of soda blasting technology for removal of point from aircraft wheels. he evaluation was conducted in the Paint Stripping Shop at Ellington Field, National Aeronautics and Space Administration/Lyndon B. Johnson Space Center (NASA/JSC), in Houston, Texas. he evaluation used limited new test data, information from previous tests by NASA/JSC as part of their program to adopt this process as a nondestructive inspection of aircraft wheels, cost estimates for the chemical stripping and bicarbonate blasting based on facility records. ecause the paint being removed contained hazardous metal constituents, the liquid and solid wastes as well as the cloud of spray generated were evaluated for metal concentrations present and their teachability. nalyses for Cd, Cr, Cu, Pb, Mn, Ni, and Zn were made as well as total metals concentrations, pH, total suspended solids, and oil and grease. he blasting technology is effective for removing paint from aircraft wheels without significant damage to the anodized surface under the paint. ngineering improvements that avoid the need of respirators, reduce noise levels and minimize water use could enhance the application. pplications that do not contain hazardous materials in the coating being removed could be significantly more lucrative. n comparison to solvent depainting this technology reduced the mount of hazardous waste generated well as cost savings due to operating and disposal costs, resulting in a 15% return on investment in about 4 years.
