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Fenton-Driven Regeneration of MTBE-spent Granular Activated Carbon
Citation:
HULING, S. G. AND E. Kan. Fenton-Driven Regeneration of MTBE-spent Granular Activated Carbon . Presented at The Battelle 7th International Conference, Remediation of Chlorinated and Recalcitrant Compounds, Monterey, CA, May 24 - 27, 2010.
Impact/Purpose:
. The objectives of the treatment process are to transform the contaminants into less toxic byproducts, re-establish the sorptive capacity of the carbon for the target chemicals, increase the useful life of the GAC, and reduce costs for GAC regeneration and water or air treatment.
Description:
Fenton-driven regeneration of Methyl tert-butyl ether (MTBE)-spent granular activated carbon (GAC) involves the combined, synergistic use of two treatment technologies: adsorption of organic chemicals onto activated carbon and Fenton-driven oxidation regeneration of the spent-GAC. Environmental contaminants are immobilized and concentrated on the GAC, and subsequently transformed by hydroxyl radicals and other reaction intermediates during oxidative treatment. The objectives of the treatment process are to transform the contaminants into less toxic byproducts, re-establish the sorptive capacity of the carbon for the target chemicals, increase the useful life of the GAC, and reduce costs for GAC regeneration and water or air treatment. Research has been conducted to examine fundamental mechanisms limiting Fenton-driven regeneration of MTBE-spent GAC. A summary of the major findings from these laboratory investigations will be presented. Preliminary results will also be presented from an ongoing pilot-scale study where a slip-stream of MTBE-contaminated ground water is extracted, and chemically regenerated in above-ground carbon reactors.
