GAC Oxidation

Description

Raw materials, activation methods, and post-activation treatment used in manufacturing granular activated carbon (GAC) results in a spectrum of physicochemical characteristics that potentially impact the adsorption oxidation treatment process. A comprehensive study is lacking that assesses the effect of GAC characteristics on adsorption oxidation treatment of contaminant-spent GAC. Consequently, it is inherently assumed the treatment process is GAC-independent. Here, GACs (n=31) were characterized and used in the hydrogen peroxide (H2O2)-based adsorption oxidation treatment of 2-chlorophenol (2CP)-spent GAC. The GACs exhibited a range in surface area, pore volume distribution, metals content, surface functionality, and H2O2 reaction. Chloride recovery, the treatment metric for 2CP oxidation, indicated a wide range in oxidation (0-49.2%) where bituminous- and wood-based GAC performed best. A selected subset of GACs (n=12), amended with iron, methyl tert-butyl ether, and H2O2, exhibited a range in oxidative treatment (1.1-57.9%). Correlations were established between GAC surface functionality, H2O2 reactivity, adsorption, and contaminant oxidation indicating multiple parameters play a collective and compounding role. The order of GACs successfully used in the treatment process is bituminous-based coal > wood > coconut > peat. Results showed adsorption oxidation treatment is GAC-dependent, and therefore, GAC selection is a key factor in the success of this technology. This dataset is associated with the following publication: Rusevova Crincoli, K., P.K. Jones, and S.G. Huling. Fenton-driven oxidation of contaminant-spent granular activated carbon (GAC): GAC selection and implications. SCIENCE OF THE TOTAL ENVIRONMENT. Elsevier BV, AMSTERDAM, NETHERLANDS, 734: 1-9, (2020).

Resources

Name Format Description Link
53 GAC%20Oxidation_Sci%20Hub%20Data%20Set%20Vers%202.0.xlsx https://pasteur.epa.gov/uploads/10.23719/1518530/GAC%20Oxidation_Sci%20Hub%20Data%20Set%20Vers%202.0.xlsx

Tags

  • mtbe
  • granular-activated-carbon
  • 2-chlorophenol
  • advanced-oxidation
  • adsorption

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