Results 131 to 140 of about 2,102 (178)
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Insight into the degradation of methomyl in water by peroxymonosulfate
Journal of Environmental Chemical Engineering, 2021Abstract Methomyl (MET) is a carbamate pesticide frequently used in agriculture, globally. Its high solubility makes it a potential water pollutant. MET can be removed by peroxymonosulfate (PMS)-based advanced oxidation processes. This study explains MET degradation by PMS-Only, pyrite (PyR)-PMS and zero-valent iron (ZVI)-PMS systems. The degradation
Waseem Hayat +4 more
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Flexocatalysis: Regulating peroxymonosulfate activation by flexoelectricity
The Journal of Chemical PhysicsChallenges related to energy shortages and environmental pollution are driving extensive research in catalysis. Flexocatalysis, which extends flexoelectricity to mechanocatalysis, is a promising mechanism for catalytic processes. Owing to its size-dependent effects, flexoelectricity has become particularly significant and plays a dominant regulatory ...
Tang Sheng +5 more
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Oxidation of Organic Compounds in Water by Unactivated Peroxymonosulfate
Environmental Science & Technology, 2018Peroxymonosulfate (HSO5- and PMS) is an optional bulk oxidant in advanced oxidation processes (AOPs) for treating wastewaters. Normally, PMS is activated by the input of energy or reducing agent to generate sulfate or hydroxyl radicals or both. This study shows that PMS without explicit activation undergoes direct reaction with a variety of compounds ...
Yi Yang +4 more
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Degradation of norfloxacin by calcite activating peroxymonosulfate: Performance and mechanism
Chemosphere, 2021In this study, calcite was investigated as an activator for the norfloxacin (NOR) degradation by peroxymonosulfate (PMS). Under optimum conditions, the NOR removal percentage was 99.7% within 60 min, and the pseudo-first-order kinetics effectively described the two-stage oxidation process. The NOR removal percentage improved from 10.4% to 91.5% and the
Ziyang Chu +9 more
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Ce(Ⅲ) activates peroxymonosulfate for the degradation of substituted PAHs
Chemosphere, 2022Substituted polycyclic aromatic hydrocarbons (SPAHs) are being intensively investigated, considering their high toxicity. Additionally, the mechanism of the effect of substituents on the removal of SPAHs and the activation of Ce(III) ions on peroxymonosulfate (PMS) have not been explored.
Xuwen, Chen +5 more
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Kinetics and mechanism of the oxidation of bisulfite by peroxymonosulfate
Inorganic Chemistry, 1993The oxidation of bisulfite ion is of importance in flue gas desulfurization processes and in the conversion of gaseous SO[sub 2] into acid rain in water droplets in the atmosphere. The oxidation of bisulfite ion by peroxymonosulfate ion, HSO[sub 5][sup [minus]], to form sulfate ion has been studied in the pH region 3.8-7.9. The reaction HSO[sub 5][sup [
Robert E. Connick +2 more
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Oxidation of aqueous sulfur dioxide by peroxymonosulfate
The Journal of Physical Chemistry, 1988Recent model calculations suggest that peroxymonosulfate may constitute a significant fraction of the total sulfur budget in remote tropospheric water droplets such as cloud, fog, and rain. However, little is known about the oxidation of dissolved SO_2 by peroxymonosulfate (HSO_5^-). We have found in aqueous solution that the rate of S(IV) oxidation is
Betterton, Eric A., Hoffmann, Michael R.
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Oxidative Cleavage of Oximes with Peroxymonosulfate Ion
Synthetic Communications, 1997Abstract: Peroxymonosulfate ion (oxone®) was found to be an efficient oxidant in the conversion of oximes to carbonyl compounds.
D. Subhas Bose, P. Srinivas
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Oxidation of Dyes by Alkaline-Activated Peroxymonosulfate
Journal of Environmental Engineering, 2016AbstractThe oxidation of dyes by alkaline-activated peroxymonosulfate (PMS) was investigated for the first time and the dominant oxidizing species in the process were identified. Various dyes [methylene blue (MB), orange G, and direct blue 53] were almost completely removed (>98.5%) by PMS under slightly alkaline conditions (pH=7.7), although there ...
Bo-Tao Zhang +4 more
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The effect of mixing on the generation of alkaline peroxymonosulfate
The Canadian Journal of Chemical Engineering, 2001AbstractAlkaline peroxymonosulfate (PMS) has been successfully used in the laboratory for bleaching kraft pulp. Used in conjunction with oxygen, the addition of 1.0% PMS to an oxygen delignification system can increase delignification from 49% to 73% without reducing pulp strength.
Mohammad Shaharuzzaman +1 more
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