Abstract: An anodic boot for the protection of steel reinforcement in concrete support structure from corrosion. The boot includes flexible panel means having first and second sides, at least one side of which is conductive polymer, and means for affixing the ends of the panel means about the circumference of the concrete support structure, maintaining the first side in contact with the exterior surface of the concrete support structure. By connecting the reinforcing bars to the negative side of a D.C. source and placing the positive side into the water surrounding the concrete support, a cathodic reaction occurs.

Abstract: A process for treating used motor oil or synthetic crude oil comprising: (i) contacting said used motor oil or synthetic crude oil with an effective amount of (A) a polyfunctional mineral acid and/or the anhydride of said acid and (B) a polyhydroxy compound to react undesired contaminants contained in said used motor oil or synthetic crude oil with components (A) and/or (B) to form one or more reaction products; and (ii) separating said reaction products from said used motor oil or synthetic crude oil. A process for reclaiming used motor oil is also disclosed.

Abstract: A process for rerefining used industrial oil comprising the steps of: (i) contacting said oil with an aqueous solution of the basic salt of an alkali metal to precipitate metal contaminants, polar compounds or particulates from said oil and to neutralize acid that may be present in said oil; (ii) separating bulk water and solid contaminants from said oil; (iii) separating fine particulates and remaining suspended water from said oil; (iv) vacuum drying said oil at a temperature in the range of about 250.degree. F. to about 400.degree. F. and a pressure in the range of about 2 to about 50 torr to remove dissolved water and light hydrocarbons from said oil; (v) contacting said oil with (A) from about 0.1 to about 3% by weight based on the weight of said oil of a polyfunctional mineral acid or the anhydride of said acid and (B) from about 0.