Method for fixing waste material

Details Method for fixing waste material Method for fixing waste material

1992-12-17

1994-12-13

Nessler, Cynthia L.

Liquid purification or separation

Processes

Chemical treatment

210901, 210660, 588252, 588256, 588257, C02F 158, C02F 162

Patent

active

053727290

ABSTRACT:
The invention relates to a method for fixing toxic or nontoxic waste material, in which method the waste material is allowed to absorb into an organic absorbent, the waste material-containing absorbent thus obtained is treated with an occluding agent and the resulting product is mixed with a hydraulic binder and a hardening activator in order to form a cement matrix. The occluding agent used in preferably a silicon compound, such as silica gel or water glass, or a silicon polymer which can be formed from granulated blast furnace slags. The absorbent used can be an organo-clay compound and/or cellulose. The invention also relates to a composite kit for fixing waste material, comprising an absorbent, a hydraulic binder and an occluding agent.

REFERENCES:
patent: 4116705 (1978-09-01), Chappel
patent: 4127001 (1978-11-01), Tomic
patent: 4377483 (1983-03-01), Yamashita et al.
patent: 4404105 (1983-09-01), Rysman de Lockerente
patent: 4473477 (1984-09-01), Beall
patent: 4518508 (1985-05-01), Conner
patent: 4650590 (1987-03-01), Beall
patent: 4762623 (1988-08-01), Kapland
patent: 4855083 (1989-08-01), Kagawa et al.
patent: 4931139 (1990-06-01), Phillips
patent: 5028338 (1991-07-01), Hooykaas
patent: 5087375 (1992-02-01), Weinwurm
patent: 5098612 (1992-03-01), Rowsell
Chem. Abstr. vol. 99, No. 12, 1983 nr. 9289bs.

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