Abstract
Paint sludge of automotive industry contains heavy metals and other toxic substances. Due to this matter, it has a high pollution potential. Incorrect disposal of paint sludge led to kinds of environmental pollution. Recycling and reusing of wastes can be one of the best solutions for decreasing of pollutant entrance to environment. The purpose of this study was to present a new method of extracting the main components of paint sludge, for determining concentration of elements in paint sludge; several tests have been done such as XRF, XRD and DTA. Results proved that considerable amounts of compounds like titanium dioxide exist in paint sludge. Titanium dioxide is one of the compounds that has various applications in different industry, and due to its high costs, an economical method for extracting of TiO2 from this sludge can be a profitable solution. Results show that the percentage of TiO2
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