Gas separation: processes – Solid sorption – Inorganic gas or liquid particle sorbed
Patent
1995-11-06
1998-11-10
Lewis, Michael L.
Gas separation: processes
Solid sorption
Inorganic gas or liquid particle sorbed
95116, 95141, 95902, 210691, 502 62, 502 64, 502 60, B01D 5302
Patent
active
058337393
ABSTRACT:
A process for coating zeolite crystals with paraffin, a wax other than paraffin, a fat or oil, or a mixture of at least one QAC and a wax, fat, or oil. Preferably, the crystals are dehydrated until they have about 5% moisture content, and are then mixed with paraffin to produce paraffin-coated zeolite crystals having a desired content of paraffin. When the coated zeolite crystals are used for removing benzene from contaminated water, their paraffin content is preferably about 8% (by weight). Other embodiments are methods for using zeolite coated with paraffin, another wax, a fat, an oil, or a mixture of at least one QAC and a wax, fat, or oil to filter a contaminant from contaminated liquid or gas. The zeolite crystals are optionally impregnated with a chemical such as permanganate before they are coated with the desired wax, fat, oil or mixture. A zeolite crystal having pores coated with wax, fat, oil, or a mixture of at least one QAC and wax, fat, or oil is within the scope of the invention. Another aspect of the invention is a method of filtering contaminants from fluid by exposing the fluid to zeolite crystals coated with a wax, fat, oil, or a mixture of at least one QAC and wax, fat, or oil.
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Cadena Fernando
Klatte Fred
Dunn Jr. Thomas G.
Lewis Michael L.
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