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Fenton-driven chemical regeneration of MTBE-spent granular activated carbon--a pilot study.
J Hazard Mater. 2012 Feb 29; 205-206:55-62.JH

Abstract

Three columns containing granular activated carbon (GAC) were placed on-line at a ground water pump and treat facility, saturated with methyl tert-butyl ether (MTBE), and regenerated with hydrogen peroxide (H2O2) under different chemical, physical, and operational conditions for 3 adsorption/oxidation cycles. Supplemental iron was immobilized in the GAC (≈6 g/kg) through the amendment of a ferrous iron solution. GAC regeneration occurred under ambient thermal conditions (21-27 °C), or enhanced thermal conditions (50 °C). Semi-continuous H2O2 loading resulted in saw tooth-like H2O2 concentrations, whereas continuous H2O2 loading resulted in sustained H2O2 levels and was more time efficient. Significant removal of MTBE was measured in all three columns using $(USD) 0.6 H2O2/lb GAC. Elevated temperature played a significant role in oxidative treatment, given the lower MTBE removal at ambient temperature (62-80%) relative to MTBE removal measured under thermally enhanced (78-95%), and thermally enhanced, acid pre-treated (92-97%) conditions. Greater MTBE removal was attributed to increased intraparticle MTBE desorption and diffusion and higher aqueous MTBE concentrations. No loss in the MTBE sorption capacity of the GAC was measured, and the reaction byproducts, tert-butyl alcohol and acetone were also degraded.

Authors+Show Affiliations

U.S. Environmental Protection Agency, Office of Research and Development, National Risk Management Research Laboratory, Robert S. Kerr Environmental Research Center, P.O. Box 1198, Ada, OK 74820, USA. huling.scott@epa.govNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, U.S. Gov't, Non-P.H.S.

Language

eng

PubMed ID

22260751

Citation

Huling, Scott G., et al. "Fenton-driven Chemical Regeneration of MTBE-spent Granular Activated Carbon--a Pilot Study." Journal of Hazardous Materials, vol. 205-206, 2012, pp. 55-62.
Huling SG, Kan E, Caldwell C, et al. Fenton-driven chemical regeneration of MTBE-spent granular activated carbon--a pilot study. J Hazard Mater. 2012;205-206:55-62.
Huling, S. G., Kan, E., Caldwell, C., & Park, S. (2012). Fenton-driven chemical regeneration of MTBE-spent granular activated carbon--a pilot study. Journal of Hazardous Materials, 205-206, 55-62. https://doi.org/10.1016/j.jhazmat.2011.12.003
Huling SG, et al. Fenton-driven Chemical Regeneration of MTBE-spent Granular Activated Carbon--a Pilot Study. J Hazard Mater. 2012 Feb 29;205-206:55-62. PubMed PMID: 22260751.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Fenton-driven chemical regeneration of MTBE-spent granular activated carbon--a pilot study. AU - Huling,Scott G, AU - Kan,Eunsung, AU - Caldwell,Caleb, AU - Park,Saehan, Y1 - 2011/12/29/ PY - 2011/09/12/received PY - 2011/11/07/revised PY - 2011/12/01/accepted PY - 2012/1/21/entrez PY - 2012/1/21/pubmed PY - 2012/5/16/medline SP - 55 EP - 62 JF - Journal of hazardous materials JO - J Hazard Mater VL - 205-206 N2 - Three columns containing granular activated carbon (GAC) were placed on-line at a ground water pump and treat facility, saturated with methyl tert-butyl ether (MTBE), and regenerated with hydrogen peroxide (H2O2) under different chemical, physical, and operational conditions for 3 adsorption/oxidation cycles. Supplemental iron was immobilized in the GAC (≈6 g/kg) through the amendment of a ferrous iron solution. GAC regeneration occurred under ambient thermal conditions (21-27 °C), or enhanced thermal conditions (50 °C). Semi-continuous H2O2 loading resulted in saw tooth-like H2O2 concentrations, whereas continuous H2O2 loading resulted in sustained H2O2 levels and was more time efficient. Significant removal of MTBE was measured in all three columns using $(USD) 0.6 H2O2/lb GAC. Elevated temperature played a significant role in oxidative treatment, given the lower MTBE removal at ambient temperature (62-80%) relative to MTBE removal measured under thermally enhanced (78-95%), and thermally enhanced, acid pre-treated (92-97%) conditions. Greater MTBE removal was attributed to increased intraparticle MTBE desorption and diffusion and higher aqueous MTBE concentrations. No loss in the MTBE sorption capacity of the GAC was measured, and the reaction byproducts, tert-butyl alcohol and acetone were also degraded. SN - 1873-3336 UR - https://www.unboundmedicine.com/medline/citation/22260751/Fenton_driven_chemical_regeneration_of_MTBE_spent_granular_activated_carbon__a_pilot_study_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0304-3894(11)01483-X DB - PRIME DP - Unbound Medicine ER -