Process for the removal of heavy metals from aqueous systems...

Details Process for the removal of heavy metals from aqueous systems... Process for the removal of heavy metals from aqueous systems...

C - Chemistry, Metallurgy

02

F

C02F 1/62 (2006.01) C02F 1/28 (2006.01) C02F 1/58 (2006.01)

Patent

CA 2183603

This invention relates to a process for removing dissolved heavy metals including lead and radioactive contaminants from contaminated aqueous systems including aqueous soil systems. Such systems have resulted from Department of Defense activities and chemical manufacture, as well as from a large variety of past activities. An organically modified smectite clay, or organoclay, is used to treat these systems. Organoclays are the reaction product of smectite clays and quaternary ammonium compounds. The organoclay is brought in contact with system to be treated where it sorbs the heavy metal in the aqueous system onto the organoclay which sorbed complex is then removed by a variety of methods including flotation and air sparging.

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