Back to results
US 5,464,598 AGranted
Method for removing a contaminant from a fluid using a chemically impregnated and coated zeolite
OwnerFred Klatteinventor
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
OwnerFred Klatteinventor
Estimating the term…
A process for impregnating zeolite with a quaternary ammonium cation (QAC) and then coating the impregnated zeolite with permanganate (such as potassium permanganate), and for impregnating zeolite with permanganate and then coating the impregnated zeolite with a QAC, and coated, impregnated zeolite crystals resulting from either process. Either coating acts as a protective agent for the impregnating substance in each zeolite crystal's interior, and allows regulated time release control of the impregnating substance, thus permitting a controlled diffusion (or absorption) rate in applications in which the coated, impregnated zeolite is employed to absorb contaminants from air or water. Combinations of coated and uncoated zeolite crystals can be chosen to match specific environmental circumstances calculable by analysis of the air or water to be treated. Mixtures of coated and uncoated QAC-impregnated zeolite can be used to react with organics such as benzene, toluene, and xylene, uncoated zeolite impregnated with permanganate, and mixtures of coated and uncoated permanganate-impregnated zeolite can be used to react with hydrogen sulfide, acetone, ethylene glycols, formaldehyde, and other contaminants. Other embodiments of the invention are methods for producing zeolite crystals impregnated with manganese dioxide, and for using such manganese dioxide-impregnated crystals to absorb contaminants from fluid.
A method for absorbing a contaminant from a fluid, including the step of:
A method for absorbing a contaminant from a fluid, including the steps of:
A method for absorbing a contaminant from a fluid, including the steps of:
Dependencies are inferred from the claim text.