ABSTRACT
This chapter presents literature studies to demonstrate the effectiveness of the technology at 1,4-dioxane removal or destruction. It aims to assess the technology's likelihood of success in the remediation of actual sites contaminated with 1,4-dioxane. The chapter discusses technologies for transfer of 1,4-dioxane from the dissolved or sorbed phase, in the case of soil, to the vapor phase for removal or further treatment. An air-stripping optimization test was performed at the US Air Force Plant 44 (AFP 44), located in Tucson, Arizona, to determine whether adjustments to the operating parameters for the large-scale treatment system could effectively reduce the influent 1,4-dioxane concentrations to meet a target level of 6.1 µg/L. The AFP 44 groundwater treatment plant utilizes three parallel trains of two-stage air-stripping towers with a design capacity of ∼5000 gallons/min. A bench-scale treatability test was performed for AFP 44 to assess the removal efficiency of several adsorptive media that were identified as potentially applicable for 1,4-dioxane treatment.
