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US 10,246,346 B2Granted
Compositions and methods for the removal of phosphates and other contaminants from aqueous solutions
AssigneeNClear Inc.
InventorsSteven A. Odom, Denny J. Ivey
Life of this patent
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Abstract
Compositions and methods for removing phosphates, nitrates and heavy metals from aqueous solutions.
Claims34
A method of producing a composition capable of removing phosphates, nitrates and heavy metals from a solution, comprising:
- (a) forming a slurry comprising calcium oxide, silicon dioxide, an alkali and a solvent, wherein the molar ratio of the calcium oxide:the silicon dioxide:the alkali ranges from 2.43-2.97:1.12-1.38:0.9-1.1;
- and
- (b) producing the composition capable of removing phosphates, nitrates and heavy metals from a solution by subjecting the slurry to a hydrothermal process for about 1 to about 6 hours under about 13.5 to 16.5 psi of pressure.
A method of producing a composition capable of removing phosphates, nitrates and heavy metals from a solution, comprising:
- (a) forming a slurry comprising calcium oxide, silicon dioxide, an alkali, a solvent and a metal halide salt, wherein the molar ratio of the calcium oxide:the silicon dioxide:the alkali:the metal halide salt ranges from 48.6-59.4:22.5-27.5:18-22:4.95-6.05;
- and
- (b) producing the composition capable of removing phosphates, nitrates and heavy metals from a solution by subjecting the slurry to a hydrothermal process for about 1 to about 6 hours under about 13.5 to 16.5 psi of pressure.
Dependencies are inferred from the claim text.