Immobilization of lead and cadmium in fly ash

Details Immobilization of lead and cadmium in fly ash Immobilization of lead and cadmium in fly ash

1985-06-24

1986-12-16

Dixon, Jr., William R.

Compositions: coating or plastic

Coating or plastic compositions

Proteinaceous material containing

106900, 106DIG1, C04B 734

Patent

active

046295097

ABSTRACT:
Leaching of cadmium and lead from solid residues obtained in the incineration of refuse may be reduced to environmentally acceptable levels by the addition of calcium sulfide to such residues. A particularly convenient method involves the addition of dry lime and an aqueous solution of an inorganic salt supplying sulfide, especially an alkali metal sulfide, in equimolar quantities.

REFERENCES:
patent: 4226630 (1980-10-01), Styron
patent: 4501618 (1985-02-01), Gebhard
EP Toxicity Test Results on Residues from Eight Recovery Facilities (Feb. 1981).
Separation Science and Technology, 14, 441-452 (1979), Chemical Abstracts, 92; 185414d (1980).

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