S
Stephen P. Mezyk
Researcher at California State University, Long Beach
Publications - 173
Citations - 4726
Stephen P. Mezyk is an academic researcher from California State University, Long Beach. The author has contributed to research in topics: Radiolysis & Hydroxyl radical. The author has an hindex of 34, co-authored 163 publications receiving 3876 citations. Previous affiliations of Stephen P. Mezyk include Idaho National Laboratory & University of California, Irvine.
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Journal ArticleDOI
Electron pulse radiolysis determination of hydroxyl radical rate constants with Suwannee River fulvic acid and other dissolved organic matter isolates
TL;DR: These values represent the first direct measurements of k*(OH, DOM,) and they compare well with literature values obtained via competition kinetic techniques during ozone or ultraviolet irradiation experiments, and more polar, lower-molecular-weight DOM isolates from wastewater have higher k(OH), DOM values.
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Degradation kinetics and mechanism of β-lactam antibiotics by the activation of H2O2 and Na2S2O8 under UV-254nm irradiation.
Xuexiang He,Xuexiang He,Stephen P. Mezyk,I. Michael,Despo Fatta-Kassinos,Dionysios D. Dionysiou,Dionysios D. Dionysiou +6 more
TL;DR: It is suggested that UV/H2O2 and UV/S2O8(2-) advanced oxidation processes (AOPs) are capable of degrading β-lactam antibiotics decreasing consequently the antibiotic activity of treated waters.
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Free Radical Destruction of β-Blockers in Aqueous Solution
TL;DR: In this article, the absolute rate constants for reaction of three β-blockers (atenolol, metoprolol, and propranolol) with the two major AO/RP radicals; the hydroxyl radical (•OH) and hydrated electron (e−aq).
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Free-Radical-Induced Oxidative and Reductive Degradation of Sulfa Drugs in Water: Absolute Kinetics and Efficiencies of Hydroxyl Radical and Hydrated Electron Reactions
TL;DR: Fundamental mechanistic parameters, hydroxyl radical and hydrated electron rate constants, and degradation efficiencies that are critical for the evaluation and implementation of advanced oxidation processes (AOPs) are provided.
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The Impact of pH and Irradiation Wavelength on the Production of Reactive Oxidants during Chlorine Photolysis.
TL;DR: Hydroxyl radical and chlorine radical steady-state concentrations are greatest under acidic conditions for all tested wavelengths and are highest using 254 and 311 nm irradiation.