Method of decontaminating solid materials contaminated with heav

Details Method of decontaminating solid materials contaminated with heav Method of decontaminating solid materials contaminated with heav

1997-04-28

1998-12-15

Redding, David A.

Chemistry: molecular biology and microbiology

Process of utilizing an enzyme or micro-organism to destroy...

Destruction of hazardous or toxic waste

210912, B09B 300

Patent

active

058495673

ABSTRACT:
In a method for reducing the content of heavy metals of solid materials, particularly of soils, a 0.1-10% aqueous solution of chemically modified biomasses of waste and residue materials is applied to the solid material whereby the heavy metals are released and extracted from the solid material. The biomass solution residues remaining in the solid material after the heavy metal extraction procedure is rapidly biodegradable so that no objectionable traces remain in the solid materials or soils.

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patent: 4287069 (1981-09-01), Reischl et al.
patent: 4320093 (1982-03-01), Volesky et al.
patent: 4355137 (1982-10-01), Winter
patent: 5178762 (1993-01-01), Pokora et al.
patent: 5292456 (1994-03-01), Francis et al.

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