期刊
CHEMOSPHERE
卷 91, 期 1, 页码 105-109出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.chemosphere.2012.12.001
关键词
Ferrate; Beta blockers; Kinetics; Removal; Oxidized products
资金
- United States National Science Foundation [CBET 1236331]
- R&D program of MKE/KEIT, Development of Core Water Treatment Technologies based on Intelligent BT-NT-IT Fusion Platform [10037331]
- Div Of Chem, Bioeng, Env, & Transp Sys
- Directorate For Engineering [1236331] Funding Source: National Science Foundation
The oxidation of propranolol (PPL), a beta-blocker by ferrate(VI) (Fe(VI)) was studied by performing kinetics, stoichiometry, and analysis of the reaction products. The rate law for the oxidation of PPL by Fe(VI) was first-order with respect to each reactant. The dependence of second-order rate constants of the reaction of Fe(VI) and PPL on pH was explained using acid-base equilibrium of Fe(VI) and PPL. The required molar stoichiometry for the complete removal of PPL was determined to be 6:1 ([Fe(VI):[PPL]). The identified products using liquid chromatography-tandem mass spectrometry were oxidized product (OP)-292, OP-308, and OP-282. The formed OPs could possibly compete with the parent molecule to react with Fe(VI) and thus resulted in a non-linear relationship between degradation of PPL and the added amount of Fe(VI). Rate and removal studies indicate the Fe(VI) is able to oxidize PPL and hence can also oxidize other beta-blockers, e.g., atenolol and metoprolol. (c) 2012 Elsevier Ltd. All rights reserved.
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