Modified clay sorbents

Details Modified clay sorbents Modified clay sorbents

1988-07-14

1990-04-10

Dees, Carl F.

Catalyst, solid sorbent, or support therefor: product or process

Zeolite or clay, including gallium analogs

Including organic component

502 84, B01J 2116

Patent

active

049160958

ABSTRACT:
A novel modified clay sorbent and method of treating industrial effluents to remove trace pollutants, such as dioxins, biphenyls, and polyaromatics such as benzo(a)pyrene and pentachlorophenol. The novel clay sorbent has a composite structure in which the interlayer space of an expandable clay, such as smectite, is filled with polyvalent or multivalent inorganic cations which forces weaker surfactant cations to locate on the surface of the clay in such an orientation that the resulting composite is hydrophilic in nature. A specific example is cetylpyridinium-hydroxy aluminum-montmorillonite. In certain embodiments, a non-expanding clay, such as kaolinite, is used and surfactant cations are necessarily located on an external surface of the clay. A specific example is cetylpyridinium-kaolinite.

REFERENCES:
patent: 3657151 (1972-04-01), Noble
patent: 4033764 (1977-07-01), Colegate et al.
patent: 4549966 (1985-10-01), Beall
patent: 4629713 (1986-12-01), Suzuki et al.
patent: 4740488 (1988-04-01), Fogler et al.

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