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PILOT-SCALE ELECTROCHEMICAL TREATMENT OF A 1,4-DIOXANE SOURCE ZONE
Blotevogel, J., C. Pijls, B. Scheffer, J.-P. de Waele, A. Lee, R. van Poecke, N. van Belzen, and W. Staals.
Groundwater Monitoring and Remediation 39(1):36-42(2019)

Six pilot-scale reactors were designed and tested for the treatment of groundwater contaminated with 1,4-dioxane at concentrations >1000 mg/L. Anode surface area-normalized degradation rates increased with increasing potential applied, while the process was more energy-efficient per mass unit removed at low potentials. Toward the end of the 8.5-month pilot test, decreasing currents and degradation rates indicated progressing passivation of the electrodes, likely due to cathodic carbonate precipitation and/or poisoning by the uniquely high organic carbon load of this source zone groundwater. This article is Open Access at https://onlinelibrary.wiley.com/doi/full/10.1111/gwmr.12307.



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