Abstract: Disclosed is a method of removing asbestos from an asbestos-containing material by 99% through low temperature heat treatment. The method includes mixing an asbestos-containing material with an oxalic acid at a weight ratio in a range of 1:0.002 to 1:1 and performing heat treatment with respect to a mixture at a temperature of 90° C. to 110° C. to remove asbestos from the asbestos-containing material by 99% or more.

Abstract: An asbestos detoxification method comprising a step B1 of impregnating an existing asbestos layer with an asbestos melting agent and detaching the existing asbestos layer; a step B2 of pulverizing the existing asbestos layer; a step B3 of loading the pulverized material obtained in step B2 into a melting furnace; a step B4 of heating a resin subsidiary material used in the disposal of the asbestos layer to vaporize the resin portion thereof and further converting the vaporized resin portion into plastic oil; a step B5 of combusting either or both of the plastic oil obtained in step B4 and a fuel; and a step B6 of heating and melting the pulverized material that is in the melting furnace with the use of the heat obtained in step B5.

Abstract: A method for destroying asbestos in mainly organic matrix asbestos-containing waste includes the steps of: preparing the asbestos-containing waste; preparing a supercritical aqueous phase; letting the asbestos and the primarily organic matrix of the asbestos-containing waste react with the aqueous phase for a time t in an appropriate reactor at a predetermined pressure P and temperature T to maintain the aqueous phase in supercritical condition; cooling and condensing the aqueous phase flowing out of the reactor; and separating the aqueous phase from any entrained solid products therein. The step of preparing the supercritical aqueous phase includes an additional step, in which an oxidizing compound is added in a predetermined concentration Cl, the pressure P is in a range from 25 to 27 MPa, and the temperature T is in a range from 600° C. to 650° C., causing the asbestos and the organic binder to be simultaneously destroyed.

Abstract: To provide a treatment agent for asbestos, which has a less influence on human body, the construction and the surrounding environment and can render the asbestos harmless evenly up to the inside of the bulky covering materials, which cover the wall, or the slate materials, and a treatment method of the asbestos using the same. A treatment agent for asbestos, which contains phosphoric acid of 0.5 through 3.0% by weight, hydrogen peroxide of 1 through 20% by weight, alcohol of 0.5 through 20% by weight and pure water and a treatment method of the asbestos using the same are described.

Abstract: A method for conversion of a material including asbestos includes: crumbling a fibrous structure of the material such that the material is crumbled into smaller particles; transporting the crumbled material into a microwave reactor and mixing with an agent facilitating heating of the material; heating the crumbled material by beams of focused polarized electromagnetic radiation in a microwave band and maintaining the smaller particles at a temperature for a period of time for structural transformation; removing the heated crumbled material from the microwave reactor and cooling the material; and subjecting the cooled crumbled material to a process of final crumbling.

Abstract: A process for recovery of the silica present in the separators located between the elements of lead-acid batteries characterized in that it comprises the following operations: a) washing the heavy plastics to remove the lead compounds and other foreign bodies, b) separating the plastics from the washing solution, c) lead recovery and regeneration of the washing solution, d) rinsing of the plastics, e) drying of the plastics, f) separation of the granular plastics from the thin plastics (polyethylene with silica filler, PVC, fabrics) by drawing them up in a flow of air making use of the shape effect, g) separation of the PVC and fabrics from the polyethylene with silica filler through fragmentation, h) pyrolysis of the polyethylene with silica filler, i) cracking of the pyrolysis gases and vapours in order to reduce their molecular weight and render them more suitable for handling and combustion to provide the heat necessary for pyrolysis, j) oxidation of the pyrolysis residue to remove carbonaceous residues a

Abstract: A method for transforming a waste product containing or completely formed of amiantus comprising subjecting the waste product to several working phases and adding of components such as calcined alumina, clay and material having a given porosity so to produce a final manufactured product free of any amiantus.

Abstract: The method for preventing asbestos from freeing airborne particles comprises sequentially heating and the asbestos in the following surrounding temperatures values and maintaining the asbestos in these surrounding temperature values until the asbestos changes to the following corresponding colors: a) between 125° F. (52° C.) and 175° F. (79° C.) until the asbestos changes to a uniform pale russet-red color; b) between 225° F. (107° C.) and 275° F. (135° C.) until the asbestos changes to a uniform dark russet-red color; c) between 325° F. (163° C.) and 375° F. (191° C.) until the asbestos changes to a uniform dark orange color; d) between 425° F. (218° C.) and 475° F. (246° C.) until the asbestos changes to a uniform red color; e) between 525° F. (274° C.) and 575° F. (302° C.) until the asbestos changes to a uniform grey color; and f) between 625° F. (329° C.) and 675° F. (357° C.) until the asbestos changes to a uniform opaque white color.

Abstract: Disclosed is a method of making an o-arylbenzonitrile by reacting o-chlorobenzonitrile with a substituted phenylzinc halide. The reaction is performed in the presence of a nickel catalyst, an ethereal solvent, and N-methylpyrrolidinone as a cosolvent.