Browsing by Author "Dionysiou Dionysios"
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- ItemA comparative study of the degradation efficiency of chlorinated organic compounds by bimetallic zero-valent iron nanoparticles(RSC, 2022) Venkateshaiah Abhilash; Silvestri Daniele; Waclawek Stanislaw Witold; Ramakrishnan Rohith Kunjiparambil; Krawczyk Kamil; Saravanan P.; Pawlyta Mirosława; Vellora Thekkae Padil Vinod; Černík Miroslav; Dionysiou Dionysios
- ItemChemistry of persulfates in water and wastewater treatment: a review(2017) Waclawek Stanislaw; Lutze Holger; Grübel Klaudiusz; Vellora Thekkae Padil Vinod; Černík Miroslav; Dionysiou DionysiosPersulfate decontamination technologies either utilizing radical driven processes or direct electron transfer are very powerful tools for the treatment of a broad range of impurities, including halogenated olefins, BTEXs (benzene, toluene, ethylbenzene and xylenes), perfluorinated chemicals, phenols, pharmaceuticals, inorganics and pesticides. Furthermore, the reactivity of persulfates is extremely dependent on the related activation techniques and the composition of the treated water matrix. Direct reactions of peroxydisulfate (PDS) or peroxymonosulfate (PMS) are rather slow and mostly unsuitable for pollutant degradation. However, PDS or PMS decompose at elevated temperatures under UV radiation, and radiolysis treatment as well as in presence of reduced metal ions to form sulfate radicals (SO4−). (SO4−)-based oxidation can also form secondary oxidants for instance carbonate radicals, hydroxyl radicals, superoxide radicals or singlet oxygen which can influence both transformation efficiency and product formation. The formation of such species is extremely subjected on the water matrix composition and can hardly be predicted. One important aspect in dealing with PDS or PMS is their analysis, which is often prone for interference by other matrix components and hampered by the low stability of PDS and PMS in aqueous systems. Numerous methods for analysis of PDS and PMS are available. The present work also provides an overview on these methods.
- ItemThe Development and Challenges of Oxidative Abatement for Contaminants of Emerging Concern(Springer, 2020) Waclawek Stanislaw Witold; Černík Miroslav; Dionysiou Dionysios
- ItemInfluence of catalyst zeta potential on the activation of persulfate(ROYAL SOC CHEMISTRY, 2021) Silvestri Daniele; Krawczyk Kamil; Pawlyta Mirosława; Krzywiecki Maciej; Vellora Thekkae Padil Vinod; Torres Mendieta Rafael Omar; Ghanbari Farshid; Černík Miroslav; Dinc Ozge; Dionysiou Dionysios; Waclawek Stanislaw Witold
- ItemLimitations and prospects of sulfate-radical based advanced oxidation processes(Elsevier BV, 2020) Duan Xiaodi; Yang Shanshan; Waclawek Stanislaw Witold; Fang Guodong; Xiao Ruiyang; Dionysiou Dionysios
- ItemSelective spectrophotometric determination of peroxydisulfate based on a by-product formation(Elsevier, 2021) Waclawek Stanislaw Witold; Silvestri Daniele; Vellora Thekkae Padil Vinod; Černík Miroslav; Dionysiou Dionysios