The deactivation of antibiotic activity in treated wastewaters is crucial because of the proliferation of antibiotic resistant bacteria.  A potential method of removal is the advanced oxidation/reduction process (AO/RP) using oxidative radicals.  While the reactions of the hydroxyl radicals have been established, another potential oxidant is the sulfate radical (SO4-�). In this study, reaction rate constants and mechanisms for sulfate radical with two different classes of antibiotics were examined: tetracycline and sulfonamides.  The average rate constant for the tetracycline class with SO4-� was determined to be (1.11 � 0.88) x 109 M-1s-1.  The average rate constant for the sulfonamide class with SO4-� was determined to be (3.98 � 0.49) x 109 M-1s-1.  A consistent reaction mechanism for each antibiotic class was inferred from the similarity of the measured rate constants.

Removal of antibiotics from water using the advanced oxidation/reduction process with sulfate radicals

244th National Meeting (2012)

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