Gsf-forschungszentrum Fur Umwelt Und Gesundheit, Gmbh

Hans-Peter Bipp

Antonius Kettrup

Dieter Bieniek

Klaus Fischer

Peter Riemschneider

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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Munchen, Germany

Hans-Peter Bipp