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Persulfate Oxidation of MTBE- and Chloroform-Spent Granular Activated Carbon
Citation:
HULING, S. G., S. KO, S. Park, AND E. Kan. Persulfate Oxidation of MTBE- and Chloroform-Spent Granular Activated Carbon . JOURNAL OF HAZARDOUS MATERIALS. Elsevier Science Ltd, New York, NY, 192(3):1484-1490, (2011).
Impact/Purpose:
Activated-persulfate regeneration of methyl tert-butyl ether (MTBE)- and Chloroform-spent GAC were evaluated.
Description:
Activated persulfate (Na2S2O8) regeneration of methyl tert-butyl ether (MTBE) and chloroform-spent GAC was evaluated in this study. Thermal-activation of persulfate was effective and resulted in greater MTBE removal than either alkaline-activation or H2O2–persulfate binary mixtures. H2O2 may serve multiple roles in oxidation mechanisms including Fenton-driven oxidation, and indirect activation of persulfate through thermal or ferrous iron activation mechanisms. More frequent, lower volume applications of persulfate solution (i.e., the persulfate loading rate), higher solid/solution ratio (g GAC mL−1 solution), and higher persulfate concentration (mass loading) resulted in greater MTBE oxidation and removal. Chloroform oxidation was more effective in URV GAC compared to F400 GAC. This study provides baseline conditions that can be used to optimize pilot-scale persulfate-driven regeneration of contaminant-spent GAC.
URLs/Downloads:
PERSULFATE OXIDATION OF MTBE- AND CHLOROFORM-SPENT GRANULAR ACTIVATED CARBON
WEBSITE
NRMRL 10304 (JOURN ART) PERSULFATE OXIDATION.PDF (PDF, NA pp, 640 KB, about PDF)