Abstract
Field testing of samples containing hexavalent chromium and organic compounds were carried out, which showed the possibility of intensifying the processes of their heat treatment using solar energy. The correlation analysis between various factors of atmospheric exposure and changes in the state of sam-ples was performed. In the course of the study, an estimate was obtained for the wavelength ranges of the near-UV, visible and near-IR spectrum, within which photo-chemical reactions of hexavalent chromium re-duction are possible. The temperature and hydrostatic pressure influence on the chemical reactions intensity in the sample was also assessed. Based on the data obtained, theoretical pre-conditions of energy efficiency of heat treatment process were formed, which should be verified by subsequent laboratory tests.
Highlights
Hexavalent chromium is still widely used in many industries to protect products from corrosion and for decorative finishing
In the aerospace and engineering industries are widely used products that have been galvanized with hexavalent chromium
The problem arises of choosing between the high toxicity of industrial waste and replacing of chrome plating with less toxic production, which leads to a decrease in product quality
Summary
Hexavalent chromium is still widely used in many industries to protect products from corrosion and for decorative finishing. In the aerospace and engineering industries are widely used products that have been galvanized with hexavalent chromium. This is the toxicity of such production for both personnel and for residents living near the plant. The problem arises of choosing between the high toxicity of industrial waste and replacing of chrome plating with less toxic production, which leads to a decrease in product quality. The optimal solution is to develop new or/and improve existing methods for neutralizing waste containing hexavalent chromium
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