TY - JOUR
T1 - Treatment of 1,4-dioxane and trichloroethene co-contamination by an activated binary persulfate-peroxide oxidation process
AU - Yan, Ni
AU - Liu, Fei
AU - Liu, Boyang
AU - Brusseau, Mark L.
N1 - Publisher Copyright:
© 2018, Springer-Verlag GmbH Germany, part of Springer Nature.
PY - 2018/11/1
Y1 - 2018/11/1
N2 - The efficacy of a binary oxidant system, hydrogen peroxide (H 2 O 2 ) and persulfate, was investigated for treatment of 1,4-dioxane (dioxane) and trichloroethene (TCE) co-contamination. Batch experiments were conducted to examine the catalytic efficiency of Fe 2+ and NaOH-based activation, oxidant decomposition rates, contaminant degradation effectiveness, and competitive degradation effects. For NaOH activation, the oxidant decomposition rate was moderate and sustained during the entire test period of 96 h. However, dioxane degradation was limited (~ 33%). Conversely, the oxidants were depleted within 24 h for the Fe 2+ -activated system, and dioxane degradation was complete within 4 h. The activation and radical generation processes were different between Fe 2+ and NaOH activation. Both dioxane and TCE underwent complete degradation in the co-contaminant experiment. The results of this study indicate that the Fe 2+ -catalyzed binary hydrogen peroxide-persulfate oxidant system is effective for oxidation of the tested contaminants separately and as co-contaminants.
AB - The efficacy of a binary oxidant system, hydrogen peroxide (H 2 O 2 ) and persulfate, was investigated for treatment of 1,4-dioxane (dioxane) and trichloroethene (TCE) co-contamination. Batch experiments were conducted to examine the catalytic efficiency of Fe 2+ and NaOH-based activation, oxidant decomposition rates, contaminant degradation effectiveness, and competitive degradation effects. For NaOH activation, the oxidant decomposition rate was moderate and sustained during the entire test period of 96 h. However, dioxane degradation was limited (~ 33%). Conversely, the oxidants were depleted within 24 h for the Fe 2+ -activated system, and dioxane degradation was complete within 4 h. The activation and radical generation processes were different between Fe 2+ and NaOH activation. Both dioxane and TCE underwent complete degradation in the co-contaminant experiment. The results of this study indicate that the Fe 2+ -catalyzed binary hydrogen peroxide-persulfate oxidant system is effective for oxidation of the tested contaminants separately and as co-contaminants.
KW - 1,4-Dioxane
KW - Activation mechanism
KW - Advanced oxidation
KW - Co-contamination
KW - Trichloroethene
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U2 - 10.1007/s11356-018-3153-1
DO - 10.1007/s11356-018-3153-1
M3 - Article
C2 - 30218336
AN - SCOPUS:85053628841
SN - 0944-1344
VL - 25
SP - 32088
EP - 32095
JO - Environmental Science and Pollution Research
JF - Environmental Science and Pollution Research
IS - 32
ER -