Method for treatment of arsenic-contaminated soil

Details Method for treatment of arsenic-contaminated soil Method for treatment of arsenic-contaminated soil

2008-07-15

2008-07-15

Kreck, John (Department: 3672)

Hazardous or toxic waste destruction or containment

Containment

Solidification, vitrification, or cementation

C588S412000, C588S320000

Reexamination Certificate

active

07399268

ABSTRACT:
Disclosed herein is a method for treatment of arsenic-contaminated soil, said method being capable of insolubilizing arsenic compounds (in organic form or tri- or pentavalent inorganic form), thereby reducing their leaching level below the environmental standard value for soil. The method consists of heating arsenic-contaminated soil at 200 to 700° C. and mixing the heated soil with a calcium compound and water. The method also consists of mixing arsenic-contaminated soil with a calcium compound, heating the mixed soil at 200 to 700° C., and mixing the heated soil with water.

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