Hazardous or toxic waste destruction or containment – Containment – Geologic – marine – or extraterrestrial storage and containment
Patent
1994-05-27
1995-10-10
Ricci, John A.
Hazardous or toxic waste destruction or containment
Containment
Geologic, marine, or extraterrestrial storage and containment
588249, 210909, 4231181, 502 84, B09B 500
Patent
active
054572720
ABSTRACT:
A method is described for capturing ecologically harmful substances, both of organic and inorganic nature, by absorbing these substances on a zeolite or on a swellable, layered clay which has been modified with hydroxyaluminium to form an aluminium-rich zeolite or a pillared clay containing pillars of aluminium hydroxide complexes, the aluminium-rich zeolite or aluminium-pillared cationic or anionic clay having been treated, prior to the absorption, with a salt of an inorganic acid, preferably with a phosphate. If the treatment is carried out with a salt of a rare earth element, superpillars are formed in the clay, as a result of which a clay having a great absorbency in addition to a large rate of flow is obtained. By treating the pillared clay with a quaternary ammonium compound, a doubly modified clay is formed which is exceedingly suitable for treating material which has been polluted with a combination of organic and inorganic ecologically harmful substances, and in particular polluted with heavy metals.
REFERENCES:
patent: 4271043 (1981-07-01), Vaughan et al.
patent: 4436832 (1984-03-01), Jacobs et al.
patent: 4579832 (1986-04-01), Shabtai et al.
patent: 4621070 (1986-11-01), Pinnavaia et al.
patent: 4629713 (1986-12-01), Suzuki et al.
patent: 4717560 (1988-01-01), Vaughan
patent: 4740488 (1988-04-01), Fogler et al.
patent: 5200378 (1993-04-01), Clearfield
patent: 5362770 (1994-11-01), Palmer et al.
patent: 5393718 (1995-02-01), Skeels et al.
Pelt & Hooykaas B.V.
Ricci John A.
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