Institute for Color Science and Technology with scientific cooperation of Iran Color Society Journal of Color Science and Technology 1735-8779 6 3 2012 09 22 Recovering of Titanium Dioxide from Solvent- Based Paint Sludge(Case Study; Iran Khodro Company) Recovering of Titanium Dioxide from Solvent- Based Paint Sludge(Case Study; Iran Khodro Company) 241 246 76057 FA S. M. Khezri Department of Environment and Energy, Islamic Azad University Science and Research branch E. Gordi Department of Environment and Energy, Islamic Azad University Science and Research branch Journal Article 1970 01 01 Solvent- based paint sludge of automotive industry has a major contamination potential due to containing heavy metals and other toxic substances such as toluene. A range of cleaning techniques has been successfully developed to limit the environmental impact caused by wastewater of these industries, but timely and effective remediation is necessary. The present study aims to estimate the pollution quantity in Solvent- based paint sludge and decrease the pollutant up to environmental standards. Also, optimization of recovering processes of elements is other objective of this study. Titanium dioxide is the main pigment of automotive industry also it is an economical element with high cost. So, titanium dioxide was chosen to recovery from paint sludge. Therefore, sludge samples were collected from paint department of Iran Khodro Company. Then, several methods inclusive of flotation and electrolysis were carried out to recover titanium dioxide from samples. The concentrations of titanium dioxide in all samples were determined by XRF method. The results showed, electrolysis was the best method for recovering titanium dioxide from the paint sludge with70% purity. Solvent- based paint sludge of automotive industry has a major contamination potential due to containing heavy metals and other toxic substances such as toluene. A range of cleaning techniques has been successfully developed to limit the environmental impact caused by wastewater of these industries, but timely and effective remediation is necessary. The present study aims to estimate the pollution quantity in Solvent- based paint sludge and decrease the pollutant up to environmental standards. Also, optimization of recovering processes of elements is other objective of this study. Titanium dioxide is the main pigment of automotive industry also it is an economical element with high cost. So, titanium dioxide was chosen to recovery from paint sludge. Therefore, sludge samples were collected from paint department of Iran Khodro Company. Then, several methods inclusive of flotation and electrolysis were carried out to recover titanium dioxide from samples. The concentrations of titanium dioxide in all samples were determined by XRF method. The results showed, electrolysis was the best method for recovering titanium dioxide from the paint sludge with70% purity. https://jcst.icrc.ac.ir/article_76057_61ae421b92a550909ad61ff44fbbbde1.pdf