Treated attapulgite clay composition

Details Treated attapulgite clay composition Treated attapulgite clay composition

1981-12-02

1983-05-31

Therkorn, Ernest G.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

252430, 210502, B01J 3102

Patent

active

043860109

ABSTRACT:
Attapulgus clay rendered substantially non-swelling and non-gelling by calcination is treated with a large organophilic quaternary ammonium or phosphonium compound to yield a sorbent material effective for purifying liquids from inorganic and organic contaminants. Treatment of the mineral substrate may be accomplished by mixing in a liquid system or by spraying a solution of the quaternary ammonium surfactant onto the mineral. Surfactant on the mineral is present in quantities approximating the exchange capacity of the mineral.

REFERENCES:
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patent: 2797196 (1957-06-01), Dunn et al.
patent: 2885360 (1959-05-01), Haden
patent: 3677939 (1972-07-01), Patil
patent: 4033764 (1977-07-01), Colegate et al.
patent: 4079001 (1978-03-01), Haase
patent: 4167481 (1979-09-01), Cremers
Cowan, "Adsorption by Organo-Clay Complexes," Clays and Clay Minerals, vol. 9, pp. 459-467, 1960.
McCarter, "Thermal Activation of Attapulgus Clay," Industrial and Engineering Chemistry, vol. 42, pp. 529-533, 1950.
Martin, "Selection Criteria for Commercial Activated Carbons in Wastewater Treatment," Abstract from American Chemical Society, 178th National Meeting, Washington, D.C., Sep. 9-14, 1979.
Hassler, Purification with Activated Carbon, Chemical Publishing Co., Inc., NY, 52-62.

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