Presentation Description
The Intersection of Chemical Oxidation and Bioremediation: Contaminant Destruction via Calcium Peroxide - Activated Persulfate
In situ chemical oxidation by activated persulfate has become a potent tool in the remediation of contaminated soil and ground water over the past four years. Persulfate can be activated by several methods, including heat, metals, peroxides and high pH, and are effective on a wide range of contaminants, including chlorinated solvents, aromatic hydrocarbons and petroleum hydrocarbons.

For the treatment of BTEX and petroleum hydrocarbons, activation of persulfate by calcium peroxide provides a unique opportunity in coupling persulfate chemical oxidation with aerobic bioremediation resulting from the continued release of oxygen from the calcium peroxide. In addition, post the oxygen release and consumption, residual sulfate generated by the reaction of persulfate and the contaminants, may be a role in anaerobic bioremediation of petroleum products via sulfate reducing bacteria.

The presentation will investigate the chemistry and efficacy of coupled persulfate chemical oxidation and bioremediation on petroleum hydrocarbons. Field case study data will be presented for a petroleum hydrocarbon site and a pentachlorophenol site.