Because of high dissolved organic carbon content of the paint, the paint sludge cannot be accepted by landfills according to European Union Legislations. Major routes for the disposal of the paint sludges are incineration as hazardous waste or combustion at cement kilns. The characteristics of the paint sludge, which mainly designate the management route, are mainly determined by the type of the paint used, application technique employed, and the chemicals applied such as flocculants, detackifiers, pH boosters, antifoam agents, and biocides as well as the dewatering techniques preferred. The amount of the paint sludge generated increases every year with the worldwide increase in the car production. The primary source of hazardous wastes at an automotive manufacturing plant is the painting process, and the major waste fraction is paint sludge, which is classified with EU waste code of 080113* implying hazardous characteristics. The automotive manufacturing process results in the consumption of several natural sources and the generation of various types of wastes. A review on paint sludge from automotive industries: Generation, characteristics and management.
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