Method of detoxification and stabilization of soils contaminated

Details Method of detoxification and stabilization of soils contaminated Method of detoxification and stabilization of soils contaminated

1993-02-18

1994-04-19

Corbin, David H.

Hazardous or toxic waste destruction or containment

Containment

Solidification, vitrification, or cementation

405128, 405266, 588256, B09B 300

Patent

active

053047109

ABSTRACT:
A method for treating chromium ore waste contaminated soils by detoxification, fixation, immobilization and stabilization comprising the steps of soil grinding, pre-activating, reducing chromium valiancy, forming insoluble metal hydroxides, and incapsulating the chromium compounds containing agglomerates to prevent potential chromium leaching from the soil according with the standard toxicity characteristic leaching procedure requirements. Additive agents such as an acidic solution, a bivalent iron sulfur containing salt, e.g. ferrous sulfate, an alkalifying agent, e.g. calcium lime slurry or lime kiln dust or caustic, a stabilizing agent, e.g. cement, cement kiln dust, silicates, polyelectrolytes, and the like are also disclosed as assisting in the chromium immobilization reactions by reacting with certain constituents in the soil.

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