Composite regenerable adsorption carbon material and its regeneration method
First Claim
1. A method for regeneration of a composite porous matrix comprised of a regenerable adsorption carbon material (CRAC) which has adsorbed therein substances to be separated therefrom, comprising permeating said porous matrix with an electrolytic solution, and applying an electric current to said electrolytic solution, wherein the specific volumetric electric conductivity of said porous matrix differs from the specific volumetric electric conductivity of the electrolytic solution by not more than one order of magnitude, and wherein electric current is passed through the surface of the carbon-electrolyte solution interface at a specific current density of at least 0.01 ampere per gram of adsorption carbon.
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Abstract
The present process provides improved means for adsorbing components and for regeneration of a composite adsorption carbon material (CRAC) used for effecting the desired separation using an electrochemical process under conditions wherein the specific volumetric electric conductivity of the CRAC differs from that of the electrolyte employed by not more than one order of magnitude, a specific current density of at least 0.01 ampere per gram of CRAC is employed, and a high degree of regeneration of CRAC from polar and non-polar substances and heavy metal ions is obtained, as well as improved adsorption.
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11 Claims
- 1. A method for regeneration of a composite porous matrix comprised of a regenerable adsorption carbon material (CRAC) which has adsorbed therein substances to be separated therefrom, comprising permeating said porous matrix with an electrolytic solution, and applying an electric current to said electrolytic solution, wherein the specific volumetric electric conductivity of said porous matrix differs from the specific volumetric electric conductivity of the electrolytic solution by not more than one order of magnitude, and wherein electric current is passed through the surface of the carbon-electrolyte solution interface at a specific current density of at least 0.01 ampere per gram of adsorption carbon.
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