Removal of contaminants from aqueous and gaseous streams using graphic filaments
AssigneeCatalytic Materials, LLC
InventorsR. Terry K. Baker, Nelly M. Rodriguez
Life of this patent
Estimating the term…
Abstract
A process for removing contaminants, particularly organic and metal contaminants, from aqueous and gaseous streams by contacting a contaminated stream with graphitic carbon filaments (nanofibers) characterized as having; (i) a surface area from about 50 to 800 m.sup.2 /g, (ii) an electrical resistivity from about 0.3 .mu.ohm.multidot.m to 0.8 .mu.ohm.multidot.m, (iii) a crystallinity from about 5% to about 100%, (iv) a length from about 1 .mu.m to about 100 .mu.m; and (v) a distance from about 0.335 nm to about 0.700 nm between graphite platelets.
Claims20
A process for removing contaminants from aqueous and gaseous streams, which process comprises contacting the contaminated stream with a carbon filaments characterized as having;
- (i) a surface area from about 50 to 800 m.sup.2 /g, (ii) an electrical resistivity from about 0.3 .mu.ohm.multidot.m to 0.8 .mu.ohm.multidot.m, (iii) a crystallinity from about 5% to about 100%, (iv) a length from about 1 .mu.m to about 100 .mu.m;
- and (v) a distance from about 0.335 nm to about 0.700 nm between graphite platelets.
A process for removing contaminants selected from the groups consisting of organic and metallics from aqueous and gaseous streams, which process comprises:
- (a) contacting the contaminated stream with a carbon filaments characterized as having;
- (i) a surface area from about 50 to 800 m.sup.2 /g, (ii) an electrical resistivity from about 0.3 .mu.ohm.multidot.m to 0.8 .mu.ohm.multidot.m, (iii) a crystallinity from about 5% to about 100%, (iv) a length from about 1 .mu.m to about 100 .mu.m;
- and (v) a distance from about 0.335 nm to about 0.700 nm between graphite platelets, thereby adsorbing contaminants onto said filaments;
- and (b) regenerating the filaments after saturation of contaminants by a technique selected from:
- heating to the decomposition temperature of the contaminants;
- and extracting the contaminants with an effective solvent.
Dependencies are inferred from the claim text.