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Contact SupplierKAVYA TRADING INDUSTRIES activated bentonite could offer supports for the regeneration of waste oil, traditional methods are continuously replaced by distillation process, without the acidulation with concentrated sulphuric acid, avoiding the acidic tars which are hard to be removed. After the heating to 300℃ for breaking oil additives and separating precipitated acidic tesins by concentrated sulphuric acid, bleaching should be come following under vacuum in 300℃.