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CONCURRENT TREATMENT OF 1,4-DIOXANE AND CHLORINATED ALIPHATICS IN A GROUNDWATER RECIRCULATION SYSTEM VIA AEROBIC COMETABOLISM
Chu, M.Y.J., P.J. Bennett, M.E. Dolan, M.R. Hyman, A.D. Peacock, A. Bodour, R. Hunter, et al.
Groundwater Monitoring & Remediation 38(3):53-64(2018)

A 265-day field trial of in situ aerobic cometabolic biodegradation (ACB) of 1,4-dioxane and chlorinated co-contaminants was conducted at Operable Unit D at the former McClellan Air Force Base. The in situ ACB reactor was established through amending recirculated groundwater with propane and oxygen. The stimulated indigenous microbial population was consistently able to degrade 1,4-dioxane to < 3 µg/L while the co-contaminants TCE and 1,2-DCA declined to < 1 µg/L and 0.18 µg/L, respectively. The field trial achieved a stable treatment efficiency of > 95% removal for 1,4-dioxane and 1,2-DCA and > 90% removal for TCE. High treatment efficiencies for 1,4-dioxane and all co-contaminants were sustained even without propane and oxygen addition for a 2-week period. See additional information in a poster at http://www.haleyaldrich.com/Portals/0/Downloads/battelle-chlorinated/aerobic-cometabolic-biodegradation-groundwater-14dioxane-haleyaldrich-battelle.pdf.



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