The natural activation ability of subsurface media to promote in-situ chemical oxidation of 1,4-dioxane.

ABSTRACT: The ability of soils and sediments to promote in-situ activation of persulfate and persulfate combined with hydrogen peroxide was investigated for treatment of 1,4-dioxane (dioxane). Experiments were conducted with both batch-reactor and column systems to examine reaction rates and activation mechanisms. Four soils and aquifer sediments were used. ICP-MS and XRD analyses were used to characterize geochemical properties of the solutions and sediments, while EPR spectroscopy was used to characterize radical formation. For the batch experiments, degradation of dioxane was significantly greater in the presence of each of the four subsurface geomedia compared to the controls with no geomedia. This indicates that all four geomedia induced oxidant activation, thereby enhancing dioxane degradation

SUBMITTER: Yan N 

PROVIDER: S-EPMC6358466 | biostudies-literature | 2019 Feb

REPOSITORIES: biostudies-literature