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. Author manuscript; available in PMC: 2013 Feb 26.
Published in final edited form as: Water Res. 2012 Oct 13;47(1):269–278. doi: 10.1016/j.watres.2012.10.009

Fig. 5.

Fig. 5

(a) Effect of radical scavengers on TCE degradation, (b) radical generation measured by ESR. The degradation conditions for (a) are based on 198 μM initial TCE concentration, pH 4, 13.7 mg/L Fe2+, 1 g/L Pd/Al2O3 and 10 mM Na2SO4 background electrolyte. Concentrations of methanol and TBA were 60 and 50 mM, respectively. The degradation conditions for (b) are based on pH 4, 13.7 mg/L Fe2+, 1 g/L Pd/Al2O3 and 10 mM Na2SO4 background electrolyte unless otherwise specified. A standard ESR spectrum for •OH was obtained for reference by Fe(II) addition after 10 min electrolysis.