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Reactive Gas Treatment

Photo of field test of reactive gas treatment
Reactive Gas Treatment

Reactive gases can be used to remediate unsaturated soil.  In comparison to liquids, gases are much easier to control in the subsurface.  Gas distribution in the vadose zone can be controlled through blowers (pressure and/or vacuum).  A variety of reactive gases can be distributed in the subsurface to meet the needs of a specific application and could include oxidizing gases (e.g. ozone), reducing gases(H2S), or gases influincing redox conditions (nitrogen or oxygen).  The introduced gas is designed to influence biological and/or chemical reactions in the subsurface leading to transformation or immobilization of the target contaminant.

Conceptual diagram depicting a reactive gas treatment system
Conceptual Depiction of Reactive Gas Treatment in the Vadose Zone

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