GES Introduces Red-Duc Technology

06/11/2009

GES has introduced a new mobile platform for using our patent-pending Red-Duc reductive remediation technology. The chemical reduction process involves the subsurface injection of a reducing agent or electron donor, such as zero-valent iron (ZVI), which reacts abiotically, or biodegradable compounds, such as food-grade oils, which provide a food source to promote microbial action. The injection process is enhanced by utilizing a non-oxygen gas (typically nitrogen with trace reductive promoters) for expanding the radius-of influence, maximizing the oxidation-reduction potential (ORP) in the groundwater, and turbulently mixing the material in the soil and groundwater. A transfer of electrons to the contaminant occurs during the chemical reaction or biological activity, resulting in the destruction and/or complete sequestration of the contaminant. Sites at which GES has conducted or proposed Red-Duc injection events include large industrial sites impacted with various contaminants such as metals (i.e. hexavalent chromium), chlorinated solvents, and ions such as perchlorates and nitrates.