ABC+ is a proven, customizable formulation combining a liquid long-lasting nutrient rich carbon substrate for enhanced anaerobic bioremediation with micro-scale zero valent iron (ZVI) for in situ chemical reduction. Redox Tech was the first company to commercialize this combination of biotic and abiotic chemistry for treating chlorinated ethenes, ethanes and DNAPL in soil and groundwater. The carbon substrate utilizes the ABC® mixture of fast and slow-release carbon with nitrogen and phosphate micronutrients to help initiate and maintain a healthy microbial population. The fast release component is typically glycerin, however sodium lactate or ethyl lactate can be used where advantageous. The slow-release carbon is emulsified vegetable oil or long-chain fatty acid methyl esters. ABC+ uses ZVI from virgin iron ore with a mean particle size less than 125 microns. For some applications a coarser iron can be used depending on the hydrogeology. Since its original development two decades ago, over twenty million pounds of ABC+ has been injected at sites all over the globe.
The presence of ZVI allows for the rapid and complete dechlorination of target compounds. Degradation rates using ZVI are several orders of magnitude greater than under natural conditions. As a consequence, the process does not result in the formation of daughter products other than ethane, ethane, and methane.
ABC® will last up to 12-24 months in the subsurface environment due to slow-releasing compounds, allowing for long-term anaerobic biodegradation
By creating a reducing environment, ABC+ can provide immobilization of heavy metals (Ni, Zn, Hg, As)
Does not require direct contact to act on target constituents.
Price advantage. The cost of the ABC+ formula is a highly competitive approach in relation to other ERD products on the market.
ABC+ produces a significantly lower redox potential of approximately –600 mV
