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IMPACT OF PEROXYMONOCARBONATE ON THE TRANSFORMATION OF ORGANIC CONTAMINANTS DURING HYDROGEN PEROXIDE IN SITU CHEMICAL OXIDATION
Yang, X., Y. Duan, J. Wang, H. Wang, H. Liu, and D. Sedlak.
Environmental Science & Technology Letters 6(12):781-786(2019)
Carbon-13 nuclear magnetic resonance analysis showed that peroxymonocarbonate (HCO4-) is a potentially important oxidative species generated during H2O2 in situ chemical oxidation, HCO4- reacts with phenols to produce di- and trihydroxyl phenols. Exchanging an electron-donating substituent in the para position of a phenolic compound with an electron-withdrawing group decreased the reaction rate. Under conditions in which HO· formation is inefficient, the fraction of the phenolic compounds that is transformed by HCO4- could be similar to or greater than the fraction transformed by HO·. It may be possible to adjust treatment conditions to enhance the formation of HCO4- as a means of accelerating rates of contaminant removal.
Environmental Science & Technology Letters 6(12):781-786(2019)
Carbon-13 nuclear magnetic resonance analysis showed that peroxymonocarbonate (HCO4-) is a potentially important oxidative species generated during H2O2 in situ chemical oxidation, HCO4- reacts with phenols to produce di- and trihydroxyl phenols. Exchanging an electron-donating substituent in the para position of a phenolic compound with an electron-withdrawing group decreased the reaction rate. Under conditions in which HO· formation is inefficient, the fraction of the phenolic compounds that is transformed by HCO4- could be similar to or greater than the fraction transformed by HO·. It may be possible to adjust treatment conditions to enhance the formation of HCO4- as a means of accelerating rates of contaminant removal.
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