Relevant bibliographies by topics / Persulfate

Academic literature on the topic 'Persulfate'

Author: Grafiati
Published: 4 June 2021
Last updated: 20 February 2023

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Journal articles on the topic "Persulfate"

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Li, Yan, Guansheng Liu, Jinping He, and Hua Zhong. "Activation of Persulfate for Groundwater Remediation: From Bench Studies to Application." Applied Sciences 13, no. 3 (January 18, 2023): 1304. http://dx.doi.org/10.3390/app13031304.

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Persulfate-based in situ chemical oxidation (ISCO) has been increasingly used for the remediation of contaminated groundwater and soil. In recent years, there have been numerous studies in the literature on all aspects of the activation of persulfate for contaminant removal at the laboratory scale, including the ways and mechanisms for the activation, the pathways of contaminant degradation, the factors associated with the activation performance, the methods characterizing the processes, etc. In contrast, studies in the literature on the practical use of the activated persulfate at the field scale are fewer, and at the same time have not been reviewed in an organized way. This review was initiated to summarize on the current research on the applications of activated persulfate for actual site remediation, and to extract the knowledge necessary for the formation of applicable technologies. The remediation efficiency and mechanism of activated persulfates by heat, alkaline, metal-based, and electrokinetic activated technologies are described. The major factors including pH, the persistence of persulfate, and the radius of influence and soil property during ISCO remediation applications were presented and discussed. Finally, the rebound process and impact towards microbial communities after in-situ chemical oxidation on site application were discussed.
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Zhu, Wen, and Jingwei Chen. "Insights into the mechanism of g-C3N4@a-Fe2O3 microsphere heterogeneous activation of hydrogen peroxide under visible light." Advances in Engineering Technology Research 1, no. 2 (September 24, 2022): 443. http://dx.doi.org/10.56028/aetr.1.2.443.

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A-Fe2O3 complex g-C3N4@a-Fe2O3 was successfully prepared by solvothermal method and used in optical Fenton photocatalytic process. Using experimental instruments such as XPS, XRD, DRS, TEM, FTIR, and photochemistry to characterize composite materials. According to the mechanism of the photocatalytic process, combining A-Fe2O3/H2O2 Fenton reagent with g-C3N4 photocatalyst under visible light conditions can effectively accelerate the mineralization of pollutants. The photocatalytic performance of g-C3N4@a-Fe2O3 were evaluated by the decomposition of bisphenol A. When the content of a-Fe2O3 is 15%, the photocatalytic efficiency of the composite is the highest. In addition, cyclic operation, iron leaching concentration, fresh and XRD pattern studies indicate that g-C3N4@a-Fe2O3 composites are very stable and reusable. The results show that the decomposition of BPA by persulfate is a non-free radical reaction, but the coupling a-Fe2O3 with g-C3N4 can effectively activate the formation of persulfate free radicals and reduce BPA under visible light radiation. Studies showed that free radicals generated by electron holes and persulfate formed on catalysts were the main causes of BPA decomposition. Therefore, combined with previous research results, this paper proposed the mechanism of g-C3N4@a-Fe2O3 composite photocatalytic reaction by photo-Fenton. More importantly, this work demonstrates a novel approach to activate persulfates that can efficiently degrade pops and gives some new ideas on the remediation of persulfates in contaminated Water.
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Zhu, Wen, and Jingwei Chen. "Insights into the mechanism of g-C3N4@a-Fe2O3 microsphere heterogeneous activation of hydrogen peroxide under visible light." Advances in Engineering Technology Research 2, no. 1 (September 24, 2022): 443. http://dx.doi.org/10.56028/aetr.2.1.443.

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A-Fe2O3 complex g-C3N4@a-Fe2O3 was successfully prepared by solvothermal method and used in optical Fenton photocatalytic process. Using experimental instruments such as XPS, XRD, DRS, TEM, FTIR, and photochemistry to characterize composite materials. According to the mechanism of the photocatalytic process, combining A-Fe2O3/H2O2 Fenton reagent with g-C3N4 photocatalyst under visible light conditions can effectively accelerate the mineralization of pollutants. The photocatalytic performance of g-C3N4@a-Fe2O3 were evaluated by the decomposition of bisphenol A. When the content of a-Fe2O3 is 15%, the photocatalytic efficiency of the composite is the highest. In addition, cyclic operation, iron leaching concentration, fresh and XRD pattern studies indicate that g-C3N4@a-Fe2O3 composites are very stable and reusable. The results show that the decomposition of BPA by persulfate is a non-free radical reaction, but the coupling a-Fe2O3 with g-C3N4 can effectively activate the formation of persulfate free radicals and reduce BPA under visible light radiation. Studies showed that free radicals generated by electron holes and persulfate formed on catalysts were the main causes of BPA decomposition. Therefore, combined with previous research results, this paper proposed the mechanism of g-C3N4@a-Fe2O3 composite photocatalytic reaction by photo-Fenton. More importantly, this work demonstrates a novel approach to activate persulfates that can efficiently degrade pops and gives some new ideas on the remediation of persulfates in contaminated Water.
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Wu, Bo, Yuanquan Xiong, Jinbo Ru, and Hao Feng. "Removal of NO from flue gas using heat-activated ammonium persulfate aqueous solution in a bubbling reactor." RSC Advances 6, no. 40 (2016): 33919–30. http://dx.doi.org/10.1039/c6ra01524g.

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Ammonium persulfate aqueous solution was used for the first time for NO removal from flue gas in a bubbling bed due to its low cost compared with other persulfate salts (sodium persulfate, potassium persulfate and ammonium persulfate).
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Delegan, Ya A., T. V. Antipova, and M. B. Vainshtein. "Effect of Persulfates on Production of Carotenoids in the Rhodosporidium sphaerocarpum, R. diobovatum and Rhodotorula glutinis Yeast Cultures." Biotekhnologiya 37, no. 3 (2021): 20–28. http://dx.doi.org/10.21519/0234-2758-2021-37-3-20-28.

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The methods for increasing the isolation of carotenoids from yeast producer cultures have been compared. It was shown that the optimal procedure is microwave pretreatment (2450 GHz, 600 W, 40 s) with subsequent extraction of the target products with methanol. Additives of sodium persulfate or ammonium persulfate to aerated culture medium provided additional oxygen sources for the yeast and increased the medium redox potential. The introduction of persulfate led to a 1.3-fold increase in the content of colored carotenoids in the R. dubiovatum VKPM Y-305 biomass as compared to the control without persulfate. In the R. sphaerocarpum VKPM Y-1559 biomass, persulfate at concentrations of 0.15 g/L and 0.50 g/L increased the content of colored carotenoids by 1.3 and 1.4 times, respectively. The optimal persulfate concentent depends on the yeast growth phase and time of exposure to the compound. Higher persulfate concentrations resulted in increased redox potential and discoloration of carotenoids, though without yeast cell death. yeasts, carotenoids, medium redox potential, persulfate
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Anotai, Jin, Nalinrut Masomboon, Chung-Lin Chuang, and Ming-Chun Lu. "Persulfate oxidation for the aniline degradation in aqueous systems." Water Science and Technology 63, no. 7 (April 1, 2011): 1434–40. http://dx.doi.org/10.2166/wst.2011.325.

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Ferrous catalyzed persulfate oxidation of dissolved aniline was investigated in aqueous systems under a variety of ferrous ion concentrations and temperature. Result showed that the addition of ferrous ions accelerated the degradation of aniline by persulfate. For the thermally activated persulfate oxidation experiment, the optimum persulfate/aniline concentration ratio at 30˚C was at 5.4 mM or 20/1. This ratio gave the highest aniline removal of 45%. For the ferrous ion catalyzed persulfate oxidation experiment, there was marginal difference in the result for the various ferrous ion/oxidant molar ratios. Thus, another series of experiment was conducted to determine the optimum ratio and a ferrous ion/persulfate molar ratio of 1.25/1 showed the highest removal efficiency.
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Liu, Jialu, Xijun Gong, Shijun Song, Fengjun Zhang, and Cong Lu. "Heat-Activated Persulfate Oxidation of Chlorinated Solvents in Sandy Soil." Journal of Spectroscopy 2014 (2014): 1–5. http://dx.doi.org/10.1155/2014/578638.

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Heat-activated persulfate oxidative treatment of chlorinated organic solvents containing chlorinated ethenes and ethanes in soil was investigated with different persulfate dosages (20 g/L, 40 g/L, and 60 g/L) and different temperatures (30°C, 40°C, and 50°C). Chlorinated organic solvents removal was increased as persulfate concentration increase. The persulfate dosage of 20 g/L with the highest OE (oxidant efficiency) value was economically suitable for chlorinated organic solvents removal. The increasing temperature contributed to the increasing depletion of chlorinated organic solvents. Chlorinated ethenes were more easily removed than chlorinated ethanes. Moreover, the persulfate depletion followed the pseudo-first-order reaction kinetics (kps=0.0292 [PS]0+0.0008,R2=0.9771). Heat-activated persulfate appeared to be an effective oxidant for treatment of chlorinated hydrocarbons.
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Imran, Muhammad A., Yuzhen Tong, Qing Hu, Mingzhu Liu, and Honghan Chen. "Effects of Persulfate Activation with Pyrite and Zero-Valent Iron for Phthalate Acid Ester Degradation." Water 12, no. 2 (January 28, 2020): 354. http://dx.doi.org/10.3390/w12020354.

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Phthalic acid esters (PAEs) are often detected in remediated groundwater using appropriate oxidant materials by in situ groundwater treatment. The study compares zero-valent iron–persulfate with a pyrite–persulfate system to degrade three PAEs—di(2-ethylhexyl) phthalate (DEHP), dibutyl phthalate (DBP), and dimethyl phthalate (DMP). Column experiments were conducted, and rapid oxidation occurred in a pyrite–persulfate system due to sulfate radical generation. DMP concentration was found at about 60.0% and 53.0% with zero-valent iron (ZVI) and pyrite activation of persulfate, respectively. DBP concentration was measured as 25.0–17.2% and 23.2–16.0% using ZVI–persulfate and pyrite–persulfate systems, respectively. However, DEHP was not detected. The total organic carbon concentration lagged behind the Ʃ3 PAEs. Persulfate consumption with ZVI activation was half of the consumption with pyrite activation. Both systems showed a steady release of iron ions. Overall, the oxidation–reduction potential was higher with pyrite activation. The surface morphologies of ZVI and pyrite were investigated using scanning electron microscopy (SEM), energy-dispersive spectroscopy (EDS), and XPS. Intensive corrosion occurs on the pyrite surface, whereas the ZVI surface is covered by a netting of iron oxides. The pyrite surface showed more oxidation and less passivation in comparison with ZVI, which results in more availability of Fe 2 + for persulfate activation. The pyrite–persulfate system is relatively preferred for rapid PAE degradation for contamination.
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Fan, Yu Guang, He Wei Hua, Bing Chen, San Ping Zhou, and Hong Xian Lin. "The Influence of Different Stirring Methods on Crystallization Process of Ammonium Persulfate." Advanced Materials Research 634-638 (January 2013): 1672–76. http://dx.doi.org/10.4028/www.scientific.net/amr.634-638.1672.

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Thorough research is performed on crystallization process of ammonium persulfate，the influence of different mixing method on crystallization process of the ammonium persulfate is discussed in this paper, the influence of temperature on crystallization process is also discussed, and then the optimum mixing method for the crystallization of ammonium persulfate is achieved. All these will do great favor to improve the stability of crystallization process of ammonium persulfate .
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Lee, Deokhui, Soyeon Kim, Kai Tang, Michael De Volder, and Yuhoon Hwang. "Oxidative Degradation of Tetracycline by Magnetite and Persulfate: Performance, Water Matrix Effect, and Reaction Mechanism." Nanomaterials 11, no. 9 (September 3, 2021): 2292. http://dx.doi.org/10.3390/nano11092292.

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This study presents a strategy to remove tetracycline by using magnetite-activated persulfate. Magnetite (Fe3O4) was synthesized at high purity levels—as established via X-ray diffractometry, transmission electron microscopy, and N2 sorption analyses—and tetracycline was degraded within 60 min in the presence of both magnetite and persulfate (K2S2O8), while the use of either substance yielded limited degradation efficiency. The effects of magnetite and persulfate dosage, the initial concentration of tetracycline, and the initial pH on the oxidative degradation of tetracycline were interrogated. The results demonstrate that the efficiency of tetracycline removal increased in line with magnetite and persulfate dosage. However, the reaction rate increased only when increasing the magnetite dosage, not the persulfate dosage. This finding indicates that magnetite serves as a catalyst in converting persulfate species into sulfate radicals. Acidic conditions were favorable for tetracycline degradation. Moreover, the effects of using a water matrix were investigated by using wastewater treatment plant effluent. Comparably lower removal efficiencies were obtained in the effluent than in ultrapure water, most likely due to competitive reactions among the organic and inorganic species in the effluent. Increased concentrations of persulfate also enhanced removal efficiency in the effluent. The tetracycline degradation pathway through the magnetite/persulfate system was identified by using a liquid chromatograph-tandem mass spectrometer. Overall, this study demonstrates that heterogeneous Fenton reactions when using a mixture of magnetite and persulfate have a high potential to control micropollutants in wastewater.
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Dissertations / Theses on the topic "Persulfate"

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Hazime, Roumayssaa. "Les espèces actives durant la dégradation photocatalytique : application aux pesticides." Thesis, Lyon 1, 2012. http://www.theses.fr/2012LYO10343/document.

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Ce travail de thèse a porté sur l'élimination d'un pesticide, l'imazalil, en phase aqueuse par trois procédés de dégradation (UV/TiO2, UV/TiO2/K2S2O8 et UV/K2S2O8) en mettant en oeuvre les outils analytiques nécessaires pour identifier les photoproduits de dégradation, suivre leur cinétique de formation et la minéralisation. L'ajout de K2S2O8 est bénéfique pour la dégradation et la minéralisation car il produit des radicaux sulfates qui sont des espèces oxydantes puissantes. Par ailleurs, le rôle des espèces radicalaires a été mis en évidence dans les trois systèmes de dégradation par des inhibiteurs de radicaux tels que les alcools (inhibiteurs des radicaux OH•). Dans une première partie, la dégradation de l'imazalil a été réalisée dans le système UV/TiO2 et les principaux photoproduits ont été identifiés par LC/MS/MS, leurs cinétiques ont été tracées. La minéralisation a été suivie et un mécanisme de dégradation a été proposé. La dégradation se déroule selon deux voies, par l'attaque des radicaux OH• ou par les trous. Dans une deuxième partie, la méthodologie de plans d'expériences a été établie dans le système UV/TiO2/K2S2O8 afin i) d'identifier les paramètres les plus influents et leurs interactions et ii) de déterminer les conditions expérimentales les plus favorables à la dégradation. Enfin, la dégradation de l'imazalil a été comparée dans les trois systèmes de dégradation en utilisant différentes concentrations de persulfate et différents pH. Il est apparu que la dégradation dans UV/TiO2, est plus efficace en milieu basique alors le pH acide est plus favorable à la dégradation de l'imazalil dans le système UV/TiO2/K2S2O8. Par contre, le pH ne joue pas un rôle important dans le système UV/K2S2O8
The aim of this thesis was the degradation of the pesticide imazalil in water in three different systems of degradation (UV/TiO2, UV/TiO2/K2S2O8 and UV/K2S2O8). Analytical techniques were used to identify photoproducts, to follow their kinetics and mineralization. The addition of K2S2O8 is beneficial for the degradation and mineralization because it produces sulfate radicals that are powerful oxidizing species. In addition, the role of radical species has been highlighted in the three systems of degradation by using scavengers of these radicals such as alcohols (hydroxyl radical scavenger). In the first part, the degradation of imazalil was performed in the system UV/TiO2 and the main photoproducts were identified by LC/MS/MS also their kinetics were plotted. Furthermore, mineralization was followed and degradation mechanism was proposed. The degradation of imazalil could happen in two ways, by the attack of OH• radicals or by holes. In the second part, the methodology of experimental design was established in the system UV/TiO2/K2S2O8 to identify the most influential parameters also their interactions and to determine the experimental conditions that are most favorable to the degradation. Finally, the degradation of imazalil was compared in the three degradation systems using different concentrations of persulfate and different pH. It appears that the degradation in UV/TiO2 is more efficient in alkaline medium while the acidic pH is more favorable to the degradation of imazalil in the system UV/TiO2/K2S2O8. On the other hand, the pH does not play an important role in the system UV/K2S2O8
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Ocampo, Ana Maria. "Persulfate activation by organic compounds." Pullman, Wash. : Washington State University, 2009. http://www.dissertations.wsu.edu/Dissertations/Summer2009/A_Ocampo_083109.pdf.

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Thesis (Ph. D.)--Washington State University, August 2009.
Title from PDF title page (viewed on Sept. 9, 2009). "Department of Civil and Environmental Engineering." Includes bibliographical references.
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Ismail, Liliane. "Étude de la dégradation de la sulfaclozine par les radicaux OH• et SO4•– et évaluation de l'influence des principaux constituants des eaux sur ces dégradations." Thesis, Lyon, 2016. http://www.theses.fr/2016LYSE1108/document.

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Dans ce travail, nous avons étudié la dégradation de la sulfaclozine, un antibiotique, dans des solutions aqueuses par photocatalyse (TiO2 en suspensions) ainsi que par oxydation par les ions persulfate. L'utilisation d'inhibiteurs spécifiques (KI et alcools) nous a permis de comprendre l'intervention de chacune des espèces réactives (électrons, trous, radicaux •OH) dans la dégradation de la sulfaclozine. En outre, l'identifications des produits de dégradation par LC-MS/MS et le suivi de leur cinétique d'apparition et de disparition avec et sans alcool nous a permis de proposer un mécanisme de dégradation photocatalytique faisant intervenir les trous, les radicaux •OH, les électrons, et les radicaux O2•–. Nous avons également évalués plusieurs méthodes d'activation du persulfate (UV, irradiation solaire, UV/TiO2 et Fe(II)) afin de générer des radicaux SO4•– pour dégrader la sulfaclozine. Nous avons montré qu'à pH 7, le système présentant la plus grande efficacité quelque soit la concentration de persulfate, était le système UV/TiO2/K2S2O8. L'utilisation des inhibiteurs spécifiques des radicaux •OH et SO4•– a permis de constater que le pH a un effet important sur le rôle de chacun de ces radicaux dans la dégradation de la sulfaclozine. Les constantes de vitesse de la réaction de la sulfaclozine avec les radicaux •OH et SO4•– ont été déterminées et des valeurs proches ont été trouvées (?109 M-1s-1). Nous avons également étudié l'effet des principaux ions constituants de l'eau sur la dégradation de la sulfaclozine dans les trois systèmes suivants: UV/TiO2, UV/TiO2/K2S2O8 et UV/K2S2O8. Cette étude a montré que les bicarbonates et les phosphates accélèrent la dégradation photocatalytique alors qu'aucun effet n'a été observé dans le système UV/K2S2O8. En ce qui concerne les ions chlorures et nitrates nous avons montré qu'ils augmentaient l'adsorption de la sulfaclozine à la surface de TiO2 mais n'accéléraient pas significativement la réaction de dégradation
In this work, we studied the degradation of the antibiotic sulfaclozine in aqueous solutions by photocatalysis (on TiO2 suspensions) as well as by persulfate ions. The use of specific inhibitors (KI and alcohols) allowed us to understand the intervention of each of the reactive species (electrons, holes, radicals •OH) in the degradation of sulfaclozine. In addition, the identification of the by-products by LC-MS / MS and the monitoring of their appearance and disappearance kinetics, allowed us to propose a photocatalytic degradation mechanism involving TiO2 holes, •OH radicals, electrons, and O2•– radicals. We also evaluated several methods for persulfate activation (UV, sunlight, UV / TiO2 and Fe (II)) to generate SO4•–. We have shown that at pH 7, the system having the highest efficiency, regardless of persulfate concentration, was the UV/TiO2/K2S2O8 system. The use of specific inhibitors of •OH and SO4•– radicals showed that pH has a significant effect on the role of each of these radicals in the sulfaclozine degradation. Moreover, the reaction rate constants of sulfaclozine with •OH radicals and with SO4•– radicals were determined and close values were found (?109 M-1s-1). We also studied the effect of the main water constituents on the degradation of sulfaclozine in the following three systems: UV/TiO2, UV/TiO2/K2S2O8 and UV/K2S2O8. This study showed that bicarbonate and phosphate accelerated the photocatalytic degradation of sulfaclozine while no effect was observed in the UV/K2S2O8 system. Regarding chloride and nitrate ions, we obtained an enhancement in sulfaclozine adsorption on the surface of TiO2 but no significant enhancement of the degradation rate was observed
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Ahmad, Mushtaque. "Persulfate activation by major soil minerals." Pullman, Wash. : Washington State University, 2008. http://www.dissertations.wsu.edu/Thesis/Fall2008/m_ahmad_032409.pdf.

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Thesis (M.S. in environmental engineering)--Washington State University, December 2008.
Title from PDF title page (viewed on Apr. 17, 2009). "Department of Civil and Environmental Engineering." Includes bibliographical references (p. 15-18).
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Merker, Marissa C. "Persulfate transport in two low-permeability soils." Pullman, Wash. : Washington State University, 2010. http://www.dissertations.wsu.edu/Thesis/Summer2010/M_Merker_061610.pdf.

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Thesis (M.S. in civil engineering)--Washington State University, August 2010.
Title from PDF title page (viewed on July 23, 2010). "Department of Civil and Environmental Engineering." Includes bibliographical references (p. 15-17).
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Yu, Miao. "Effect of persulfate formulations on soil permeability." Pullman, Wash. : Washington State University, 2010. http://www.dissertations.wsu.edu/Thesis/Summer2010/m_yu_061410.pdf.

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Thesis (M.S. in environmental engineering)--Washington State University, August 2010.
Title from PDF title page (viewed on July 30, 2010). "Department of Civil and Environmental Engineering." Includes bibliographical references (p. 13-14).
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Ollé, Monge Marta. "Novel insights in occupational asthma due to persulfate salts." Doctoral thesis, Universitat Autònoma de Barcelona, 2016. http://hdl.handle.net/10803/399518.

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El asma relacionada con el trabajo se define como el asma causada por la exposición a agentes que se encuentran en el lugar de trabajo, y es responsable de hasta un 25% de los casos de asma de inicio en la edad adulta. En los países industrializados es una de las causas más comunes de enfermedad respiratoria ocupacional. Concretamente, el asma ocupacional (AO) se atribuye a exposiciones en un particular ambiente ocupacional y no a estímulos fuera del lugar de trabajo, y puede estar inducido tanto por la sensibilización a un agente específico (AO inmunológico) como por exposición a sustancias irritantes (AO no inmunológico). Se han descrito más de 400 agentes causantes de AO y se dividen en agentes biológicos de alto peso molecular (APM) como proteínas, glicoproteínas y polisacáridos, y agentes químicos de bajo peso molecular (BPM) como sustancias químicas sintéticas, compuestos naturales, fármacos y metales. Las sales de persulfato son agentes químicos de BPM presentes en los productos decolorantes del cabello a concentraciones superiores al 60%. Estas sustancias son capaces de producir una sensibilización inmunológica y posterior enfermedad alérgica (dermatitis de contacto y asma bronquial), y son reconocidas como la principal causa de AO entre los profesionales de peluquería. Sin embargo, los detalles de la respuesta inmune implicada en el AO inducido por sales de persulfato no son bien conocidos, ya que parecen diferir de la respuesta típicamente alérgica de tipo 2. En algunos casos, se ha propuesto un mecanismo inmunológico mediado por inmunoglobulina-E (IgE) a pesar de las evidencias de una respuesta inmune tipo 1. En este sentido, un modelo murino de asma inducido por sales de persulfato, previamente validado, ha permitido ampliar el conocimiento de la fisiopatología implicada en este tipo de AO. La primera parte de la presente tesis se centra en el estudio de la persistencia de la respuesta asmática a sales de persulfato tras la sensibilización dérmica y tras una inhalación intranasal de persulfato amónico en ratones sensibilizados. Estos estudios mostraron una progresiva disminución de la respuesta asmática con el tiempo y los síntomas asmáticos llegaron incluso a desparecer, de forma parecida a lo que puede ocurrir en los pacientes con AO cuando cesa la exposición al agente causal. Sin embargo, no está claro que la completa eliminación de la exposición al agente sensibilizante sea la medida más eficiente ya que muchos pacientes permanecen sintomáticos. En este sentido, los ratones sensibilizados mostraron signos de sensibilización sistémica a largo plazo que les haría susceptibles a desarrollar una nueva respuesta asmática en el caso de una posible re-exposición al agente causal. El objetivo de la segunda parte de la tesis es evaluar el papel de la IgE y los mecanismos implicados en el desarrollo de la respuesta inmune en el AO causado por agentes de BPM, ya que el rol que desarrolla la IgE en este tipo de asma no está bien dilucidado. Mediante el bloqueo de la IgE, se pudieron estudiar los efectos del tratamiento con el anticuerpo monoclonal (AcM) anti-IgE en el modelo murino de AO inducido por sales de persulfato. La administración del AcM anti-IgE neutralizó completamente los niveles de IgE en suero y mejoró los síntomas asmáticos como la hiperrespuesta bronquial y los parámetros inflamatorios. Estos hallazgos sugieren la implicación de un mecanismo inmunológico donde la IgE puede tener un papel relevante para la fisiopatología del asma causada por agentes de BPM. En conclusión, los estudios de esta tesis arrojan conocimientos en la fisiopatología del AO a sales de persulfato y proponen una compleja interacción entre la respuesta inmune innata y una respuesta adaptativa mixta tipo1-tipo2.
The exposure to specific agents present in the workplace is thought to account for up to 25% of all cases of adult-onset asthma leading to work-related asthma, which is a common cause of work-related lung disease in the industrial world. Specifically, occupational asthma (OA) is attributable to exposure in a particular work environment and not to stimuli outside the workplace, induced by either sensitization to a specific substance (sensitizer-induced OA) or by exposure to an inhaled irritant at work (irritant-induced OA). More than 400 agents are reported to cause OA. They can be divided into biological agents of high molecular weight (HMW) (>5 KDa), such as proteins, glycoproteins and polysaccharides, and chemical agents of low molecular weight (LMW) (< 5 KDa) such as synthetic chemicals, natural compounds, drugs and metals. Persulfate salts are LMW chemical compounds present in hair bleaching products at concentrations up to 60%. They are capable of causing immunological sensitization and subsequent allergic disease (such as contact dermatitis and bronchial asthma), and are the main cause of OA among hairdressers. Nevertheless, no consensus has been reached regarding the details of the immune response involved in persulfate-induced OA, as it seems to differ from the typical allergic type2 immune response. In some cases, an IgE-mediated mechanism has been proposed despite evidence of a type 1 immune response. In this connection, a validated mouse model of persulfate-induced asthma has provided valuable knowledge about the physiopathology involved in this type of OA. The first part of this thesis focuses on the study of the persistence of the asthmatic response to persulfate salts after dermal sensitization (Chapter 1) and after specific persulfate challenge in sensitized mice (Chapter 2) in the mouse model of persulfate-induced asthma. These studies showed a progressive decrease in the asthmatic response over time and even found that the asthma symptoms may disappear, perhaps mirroring what happens in patients when the exposure to the causal agent ceases. Nevertheless, it is not clear that complete removal from the exposure to the sensitizing agent is the most efficient therapeutic approach, as many patients remain symptomatic despite avoidance of the causal agent. In this context, sensitized mice exhibited signs of long-term sensitization which would make them susceptible to developing a new asthmatic response when re-exposed to the sensitizing agent. The aim of the second part of this thesis was to explore the role of IgE and the mechanisms involved in the development of the immune response in this type of OA due to LMW agents. By neutralizing the IgE, we wanted to study the effects of anti-IgE monoclonal antibody (mAb) treatment in the established mouse model of persulfate-induced OA (Chapter 3). The administration of anti-IgE mAb completely neutralized serum IgE and improved asthma symptoms such as airway hyperresponsiveness (AHR) and inflammation patterns in the mouse model of OA, suggesting that an immunological mechanism is involved and that IgE may play an important role in the pathophysiology of the chemical-induced asthma. In conclusion, the studies included in his doctoral thesis shed light on the pathophysiology of OA due to persulfate salts and propose a complex interaction of innate and a mixed type1-type2 adaptative immune response.
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Bannister, Jonathan. "Chemical degradation of PFAS using hydrogen peroxide and persulfate." Thesis, Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-82092.

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PFAS are a group of relatively newly discovered man-made pollutants. PFAS contains a C-F bond which is one of the strongest bonds in organic chemistry. Therefore, PFAS are not easily degradable and, once release into nature, are very persistent. PFAS are also labile in natural environments and therefore, they can sometimes be found far from the source of pollution. Their persistent and labile nature, in combination with their bioaccumulation ability and human health effects make of this compounds an important contaminant to take care of. Currently there are not stablish, wellfunctioning methods to treat contaminated soils and waters. A lot of research is performed at the moment to find good treatment options. In this work a test to chemically degraded spiked samples of PFOA, PFOS and PFBA was performed. By means of experimental design tools, we aim to evaluate which operational factors are relevant for this treatment. Best results when using hydrogen peroxide as a reactant was 70% degradation for PFOS and 42% degradation for PFOA. When persulfate was used as a reactant, a 57% degradation of PFOS, 99% degradation of PFOA and 99% degradation of PFBA was achieved.
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Gray, Kevin M. "Sonochemical Defluorination of Perfluorinated Compounds by Activated Persulfate Ions." Digital WPI, 2018. https://digitalcommons.wpi.edu/etd-theses/1265.

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Polyfluorinated compounds (PFCs) are a class of anthropogenic chemicals that have been found in groundwater and wastewater around the world. Perfluoroctane sulfonate (PFOS) and perfluoroctanoic acid (PFOA) are primarily used for industrial surfactants, and aqueous film forming foams (AFFFs). These PFCs and many of their constituents have been found to be carcinogenic to humans and other animals. A simple method for defluorination of these compounds is needed. Advanced oxidation of PFOS, PFHxS, and PFBS-k was carried out using activated sodium persulfate through ultrasonic irradiation with the following condition; [PFC] = 20 millimolar (mM), [Na2S2O8] = 25 mM, pH = 7, and 25°C. Fluoride concentrations were quantified by ion chromatography (IC). In laboratory experiments, batch reactions of PFBS solutions were conducted in purified water at different pH conditions and N2S¬2O8: PFBS molar ratios of 1:1, 2:1, 10:1, and 100:1 respectively. Solution pH was maintained at 7 using HNO3. Of the three compounds, PFHxS had the greatest defluorination (11%) after 120 minutes reaction time. However, PFBS-K had the greatest increase in defluorination (115%) between the control ultrasound (US) experiment and the combination experiment. When Na2S2O8 was increased, the defluorination ratio of PFBS decreased. This decrease was partly attributed to scavenging reactions between SO4¯• and S2O8²¯. These results show a synergism between ultrasonic irradiation and activated sodium persulfate as a form of advanced oxidation. Recommendations for further research into defluorination of PFOS and its constituents by ultrasonic degradation include: the use of high performance liquid chromatograph with accompanying mass spectrometry (HPLC/MS), the use of an ultrasonic probe with alternate frequencies, and the effects of surface tension on defluorination.
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Tran, Thien, and Thien Tran. "Degradation of Aqueous Perfluorooctanoic Acid by Iron-Activated Persulfate Oxidation." Thesis, The University of Arizona, 2016. http://hdl.handle.net/10150/621559.

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Perfluorinated compounds (PFCs) are a class emerging contaminants that have been implicated in bladder cancer and other human health problems. Due to the widespread exposure to humans, persistence in the environment, and their negative effects on human health, we need to develop a treatment method to degrade these chemicals into harmless species. Perfluorooctanoic acid (PFOA, C₈HF₁₅O₂) is one of the top representatives of PFCs commonly reported to be found in water sources, hence it was chosen as the model compound and focus in this project. We examined an iron-activated persulfate oxidation (IAPO) method to decompose aqueous PFOA, and tested the reaction under various conditions, including: oxic, anoxic, and anoxic/dark conditions. We observed 𝑐𝑎. 64% of PFOA (beginning with solution phase concentration fo 𝑐𝑎. 1.64*10⁻⁶ mol L⁻¹) was transformed after four hours under anoxic conditions. This was about seven times higher than measured under oxic conditions, and about five times higher than anoxic/dark conditions. Therefore, we concluded that IAPO can decompose PFOA at 25 °C, the ambient condition temperature. This method can potentially be used as an inexpensive and environmentally-friendly PFOA remediation method, with potential application to other PFCs in groundwater and soil. In addition, this method may be applicable for surface water sources such as potable water reservoirs, waste water effluent, and extracted groundwater.
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Books on the topic "Persulfate"

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Zhu, Mingshan, Zhenfeng Bian, and Chun Zhao, eds. Persulfate-based Oxidation Processes in Environmental Remediation. Cambridge: Royal Society of Chemistry, 2022. http://dx.doi.org/10.1039/9781839166334.

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United States International Trade Commission. Persulfates from China. Washington, DC: U.S. International Trade Commission, 1997.

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United States International Trade Commission. Persulfates from China. Washington, DC: U.S. International Trade Commission, 1996.

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United States International Trade Commission. Persulfates from China. Washington, DC: U.S. International Trade Commission, 1996.

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Patton, Charles J. Methods of analysis by the U.S. Geological Survey National Water Quality Laboratory: Evaluation of alkaline persulfate digestion as an alternative to Kjeldahl digestion for determination of total and dissolved nitrogen and phosphorus in water. Denver, Colo: U.S. Dept. of the Interior, U.S. Geological Survey, 2003.

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Patton, Charles J. Methods of analysis by the U.S. Geological Survey National Water Quality Laboratory: Evaluation of alkaline persulfate digestion as an alternative to Kjeldahl digestion for determination of total and dissolved nitrogen and phosphorus in water. Denver, Colo: U.S. Dept. of the Interior, U.S. Geological Survey, 2003.

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Zhao, Chun, Mingshan Zhu, and Zhenfeng Bian. Persulfate-Based Oxidation Processes in Environmental Remediation. Royal Society of Chemistry, The, 2022.

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Zhao, Chun, Mingshan Zhu, and Zhenfeng Bian. Persulfate-Based Oxidation Processes in Environmental Remediation. Royal Society of Chemistry, The, 2022.

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Zhao, Chun, Mingshan Zhu, and Zhenfeng Bian. Persulfate-Based Oxidation Processes in Environmental Remediation. Royal Society of Chemistry, The, 2022.

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Methods of analysis by the U.S. Geological Survey National Water Quality Laboratory: Determination of dissolved organic carbon by UV-promoted persulfate oxidation and infrared spectrometry. Denver, Colo: U.S. Dept. of the Interior, U.S. Geological Survey, 1993.

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Book chapters on the topic "Persulfate"

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Bährle-Rapp, Marina. "Ammonium Persulfate." In Springer Lexikon Kosmetik und Körperpflege, 32. Berlin, Heidelberg: Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-71095-0_555.

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Bährle-Rapp, Marina. "Potassium Persulfate." In Springer Lexikon Kosmetik und Körperpflege, 445. Berlin, Heidelberg: Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-71095-0_8343.

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Bährle-Rapp, Marina. "Sodium Persulfate." In Springer Lexikon Kosmetik und Körperpflege, 515. Berlin, Heidelberg: Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-71095-0_9677.

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Petri, Benjamin G., Richard J. Watts, Aikaterini Tsitonaki, Michelle Crimi, Neil R. Thomson, and Amy L. Teel. "Fundamentals of ISCO Using Persulfate." In SERDP/ESTCP Environmental Remediation Technology, 147–91. New York, NY: Springer New York, 2010. http://dx.doi.org/10.1007/978-1-4419-7826-4_4.

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Hagemeyer, O., E. Marek, V. van Kampen, I. Sander, M. Raulf, R. Merget, and T. Brüning. "Specific Inhalation Challenge in Persulfate Asthma." In Advances in Experimental Medicine and Biology, 85–91. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/5584_2015_131.

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Liu, Shuan, Haojie Ding, Jian Zhang, Qibin Xu, Xiaodi Duan, and Chun Zhao. "Chapter 3. Electrochemical Activation of Persulfate for Organic Pollution Control in Water." In Persulfate-based Oxidation Processes in Environmental Remediation, 87–101. Cambridge: Royal Society of Chemistry, 2022. http://dx.doi.org/10.1039/9781839166334-00087.

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Fang, Guodong, Changyin Zhu, Xiaolei Wang, Wenxiu Qiu, and Dongmei Zhou. "Chapter 11. Novel Strategy for Soil Remediation of Contaminated Sites Using Persulfate-based Advanced Oxidation Technologies." In Persulfate-based Oxidation Processes in Environmental Remediation, 289–314. Cambridge: Royal Society of Chemistry, 2022. http://dx.doi.org/10.1039/9781839166334-00289.

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Qian, Xufang, Yichan Wen, Yixin Zhao, and Zhenfeng Bian. "Chapter 5. Heterogeneous Activation of Persulfate Using Metal and Metal Oxides." In Persulfate-based Oxidation Processes in Environmental Remediation, 131–44. Cambridge: Royal Society of Chemistry, 2022. http://dx.doi.org/10.1039/9781839166334-00131.

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Ghanbari, Farshid, Stefanos Giannakis, and Sofia Samoili. "Chapter 10. Persulfate Application for Landfill Leachate Treatment: Current Status and Challenges." In Persulfate-based Oxidation Processes in Environmental Remediation, 252–88. Cambridge: Royal Society of Chemistry, 2022. http://dx.doi.org/10.1039/9781839166334-00252.

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Jing, Binghua, Junhui Zhou, and Zhimin Ao. "Chapter 7. Persulfate-based Advanced Oxidation Processes in Environmental Remediation: Theoretical Chemistry Study." In Persulfate-based Oxidation Processes in Environmental Remediation, 187–210. Cambridge: Royal Society of Chemistry, 2022. http://dx.doi.org/10.1039/9781839166334-00187.

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Conference papers on the topic "Persulfate"

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Farkas, Luca, Adrienn Szirmai, Anett Covic, and Tünde Alapi. "Removal of Trimethoprim and 5-Fluorouracil by UV/Persulfate and UV/VUV Persulfate Methods." In EWaS5. Basel Switzerland: MDPI, 2022. http://dx.doi.org/10.3390/environsciproc2022021052.

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Zhang, Xiheng, Li Zhang, Liwei Hou, and Lihua Dong. "Persulfate-enhanced Photocatalytic Degradation of Methylene Blue." In 2016 5th International Conference on Sustainable Energy and Environment Engineering (ICSEEE 2016). Paris, France: Atlantis Press, 2016. http://dx.doi.org/10.2991/icseee-16.2016.111.

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Wang, Ping, Shiying Yang, Liang Shan, Xin Yang, Wenyi Zhang, Xueting Shao, and Rui Niu. "Waste Heat-Activated Persulfate Degradation of Dye Wastewater." In 2010 4th International Conference on Bioinformatics and Biomedical Engineering (iCBBE). IEEE, 2010. http://dx.doi.org/10.1109/icbbe.2010.5514986.

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Alapi, Tünde, Luca Farkas, and Adrienn Szirmai. "UV/Persulfate and UV/VUV/Persulfate Methods for Removal Trimethoprim from Waters - Special Attention to the Effect of Matrix Components." In The 3rd International Conference on Environmental Science and Applications (ICESA'22). Avestia Publishing, 2022. http://dx.doi.org/10.11159/icesa22.128.

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Kurakalva, Rama Mohan. "In Situ Remediation of Aldrin via Activated Persulfate Oxidation." In Geo-Chicago 2016. Reston, VA: American Society of Civil Engineers, 2016. http://dx.doi.org/10.1061/9780784480168.031.

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Zhang, Hui, Bingqu Liang, and Kim Hayes. "Iron Activated Persulfate Oxidation Process for TMP Degradation and Kinetic Analysis." In Goldschmidt2020. Geochemical Society, 2020. http://dx.doi.org/10.46427/gold2020.3101.

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Jeong, Jae-Gu, Si-Hyun Do, Yong-Jae Kwon, and Sung-Ho Kong. "Persulfate Oxidation Activated by Base Solution To Treat Diesel-Contaminated Soil." In 2nd Annual International Conference on Sustainable Energy and Environmental Sciences (SEES 2013). Global Science and Technology Forum, 2013. http://dx.doi.org/10.5176/2251-189x_sees13.25.

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Balaberda, Amy-lynne, and Ania Ulrich. "Remediation of oil sands naphthenic acids by activated persulfate oxidation and biodegradation." In Mine Closure 2022: 15th Conference on Mine Closure. Australian Centre for Geomechanics, Perth, 2022. http://dx.doi.org/10.36487/acg_repo/2215_33.

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He, D. X., W. D. Xue, and R. Zhao. "Aqueous Solution of Ammonium Persulfate Assisted Electrochemical Exfoliation of Graphite into Graphene." In The International Workshop on Materials, Chemistry and Engineering. SCITEPRESS - Science and Technology Publications, 2018. http://dx.doi.org/10.5220/0007443006580662.

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Zhang, Wenyi, Shiying Yang, Rui Niu, Xueting Shao, Liang Shan, Xin Yang, and Ping Wang. "Microwave-Assisted COD Removal from Landfill Leachate by Hydrogen Peroxide, Peroxymonosulfate and Persulfate." In 2010 4th International Conference on Bioinformatics and Biomedical Engineering (iCBBE). IEEE, 2010. http://dx.doi.org/10.1109/icbbe.2010.5517536.

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Reports on the topic "Persulfate"

1

Brandys, Marek, Nicholas Mecholsky, Ian Pegg, and Rodney Skeen. Acetonitrile Destruction in ETF Feed Solutions by UV/OX and Persulfate (Final Report). Office of Scientific and Technical Information (OSTI), November 2020. http://dx.doi.org/10.2172/1784544.

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Watts, Richard J. Enhanced Reactant-Contaminant Contact through the Use of Persulfate In Situ Chemical Oxidation (ISCO). Fort Belvoir, VA: Defense Technical Information Center, February 2011. http://dx.doi.org/10.21236/ada579945.

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Gavaskar, Arun, Wendy Condit, and Karla Harre. Cost and Performance Report for a Persulfate Treatability Study at Naval Air Station North Island. Fort Belvoir, VA: Defense Technical Information Center, August 2008. http://dx.doi.org/10.21236/ada506130.

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Quig, Lauren. Transport of Heat Activated Persulfate and Its Application for In-situ Chemical Oxidation of Residual Trichloroethylene. Portland State University Library, January 2000. http://dx.doi.org/10.15760/etd.2625.

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Methods of analysis by the U.S. Geological Survey National Water Quality Laboratory : evaluation of alkaline persulfate digestion as an alternative to Kjeldahl digestion for determination of total and dissolved nitrogen and phosphorus in water. US Geological Survey, 2003. http://dx.doi.org/10.3133/wri034174.

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