Peroxymonosulfate activation by phosphate anion for organics degradation in water

Lou, Xiaoyi; Wu, Liuxi; Guo, Yaoguang; Chen, Chuncheng; Wang, Zhaohui; Xiao, Dongxue; Fang, Changling; Liu, Jianshe; Zhao, Jincai; Lu, Shan Zhen

doi:10.1016/j.chemosphere.2014.09.046

Cited by 201 publications

(44 citation statements)

References 13 publications

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“…The method in which inhibitors of radical-chain transformations are introduced is widely used to indirectly confi rm the involvement of free radicals in oxidation processes [27]. Moreover, based on different rates at which free radicals interact with a "trap," we can determine the contribution of a radical species to the oxidative process.…”

Section: Role Of Sulfate Anion Radicals So 4 -•mentioning

confidence: 99%

Photoactivation of the oxidation process of para-chlorophenol in aqueous solutions

et al. 2015

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Kinetics of the oxidative destruction of para-chlorophenol in a combined iron-persulfate system under the action of simulated sunlight was studied. It was shown that, under additional photoirradiation, a deep conversion of chlorophenol and main intermediate products of its destruction is provided, with iron compounds serving not only as catalysts, but also as photochemical oxidation sensitizers. The degree of mineralization of para-chlorophenol and products of its oxidation under a photoactivated treatment for two hours reached a value of 60%, whereas that in the "dark" reaction did not exceed 1%. In the combined oxidizing system S 2 O 8 2-/Fe 2+ / UV-Vis, a considerable synergic effect was observed due to the formation of reactive oxygen intermediate both via decomposition persulfate and through reduction of Fe 3+ from inactive Fe 3+ intermediates.

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Section: Role Of Sulfate Anion Radicals So 4 -•mentioning

confidence: 99%

Photoactivation of the oxidation process of para-chlorophenol in aqueous solutions

et al. 2015

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“…(26)-(33)) [35,117,120,121]. Unexpectedly, phosphate-buffered saline (PBS), a commonly used pH-buffer, was also shown to activate PMS, and the PBS/PMS system effectively degraded model water pollutants Acid Orange 7, rhodamine b and 2,4,6-trichlorophenol [122].…”

Section: Sulfate Radical-based Aopsmentioning

confidence: 99%

Advanced oxidation processes for the removal of cyanobacterial toxins from drinking water

Schneider

Bláha

2020

Preprint

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Drinking water production faces many different challenges with one of them being naturally produced cyanobacterial toxins. Since pollutants become more abundant and persistent today, conventional water treatment is often no longer sufficient to provide adequate removal. Amongst other emerging technologies, advanced oxidation processes (AOPs) have a great potential to appropriately tackle this issue. This review addresses the economic and health risks posed by cyanotoxins and discusses their removal from drinking water by AOPs. The current state of knowledge on AOPs and their application for cyanotoxin degradation is synthesized to provide an overview on available techniques and effects of water quality, toxin- and technique-specific parameters on their degradation efficacy. The different AOPs are compared based on their efficiency and applicability, considering economic, practical and environmental aspects and their potential to generate toxic disinfection byproducts. For future research, more relevant studies to include the degradation of less explored cyanotoxins, toxin mixtures in actual surface water, assessment of residual toxicity and scale-up are recommended. Since actual surface water most likely contains more than just cyanotoxins, a multi-barrier approach consisting of a series of different physical, biological and chemical – especially oxidative – treatment steps is inevitable to ensure safe and high quality drinking water.

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“…b, 2016). SO 4 − · can be formed via activation of persulfate (PS) or peroxymonosulfate (PMS) with transition metal, ultraviolet, heat, ultrasound, anions, and base Deng et al 2013c); Deng et al 2017;Furman et al 2010;Lou et al 2014;Wang et al 2016). It is reported that PMS can be activated more easily than PS due to its shorter bond length of O-O (Anipsitakis et al 2004).…”

Section: Introductionmentioning

confidence: 96%

Synthesis of magnetic CoFe2O4/ordered mesoporous carbon nanocomposites and application in Fenton-like oxidation of rhodamine B

Deng

Chen

Lü

et al. 2017

Environ Sci Pollut Res

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CoFeO/ordered mesoporous carbon (OMC) nanocomposites were synthesized and tested as heterogeneous peroxymonosulfate (PMS) activator for the removal of rhodamine B. Characterization confirmed that CoFeO nanoparticles were tightly bonded to OMC, and the hybrid catalyst possessed high surface area, pore volume, and superparamagnetism. Oxidation experiments demonstrated that CoFeO/OMC nanocomposites displayed favorable catalytic activity in PMS solution and rhodamine B degradation could be well described by pseudo-first-order kinetic model. Sulfate radicals (SO·) were verified as the primary reactive species which was responsible for the decomposition of rhodamine B. The optimum loading ratio of CoFeO and OMC was determined to be 5:1. Under optimum operational condition (catalyst dosage 0.05 g/L, PMS concentration 1.5 mM, pH 7.0, and 25 °C), CoFeO/OMC-activated peroxymonosulfate system could achieve almost complete decolorization of 100 mg/L rhodamine B within 60 min. The enhanced catalytic activity of CoFeO/OMC nanocomposites compared to that of CoFeO nanoparticles could be attributable to the increased adsorption capacity and accelerated redox cycles between Co(III)/Co(II) and Fe(III)/Fe(II).

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Peroxymonosulfate activation by phosphate anion for organics degradation in water

Cited by 201 publications

References 13 publications

Photoactivation of the oxidation process of para-chlorophenol in aqueous solutions

Photoactivation of the oxidation process of para-chlorophenol in aqueous solutions

Advanced oxidation processes for the removal of cyanobacterial toxins from drinking water

Synthesis of magnetic CoFe2O4/ordered mesoporous carbon nanocomposites and application in Fenton-like oxidation of rhodamine B

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