HEAVY METAL CATION RECOVERING AGENT INCLUDING A SILICATE OR ALUMINOSILICATE TYPE COMPOUND AND A CARBONATE TYPE COMPOUND

摘要

An agent for recovering heavy metal cations from an aqueous effluent, including a silicate or aluminosilicate type compound, e.g. an alkali metal silicate or aluminosilicate, and a carbonate type compound, e.g. an alkali metal carbonate, and preferably a carrier such as a clay. The agent may also form a cation stabiliser. Said agent is useful for removing or stabilising heavy metal cations in the water used for cleaning flue gases from waste incineration, particularly household refuse and industrial waste incineration.