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19 de jul. de 2023 · susceptibl e to ultraviolet light-induced degrada tion, making it a critical c onsidera tion [11]. U ltraviol et light-induced degrada tion manifes ts as a gr adual d ecline i n .
Use of an ultraviolet light-activated persulfate process to degrade humic substances: effects of wavelength and persulfate dose Environ Sci Pollut Res Int. 2022 Feb;29(7) :9923-9931. ... The results showed that ultraviolet-activated persulfate effectively treated humic substances compared with hydrogen peroxide and direct irradiation.
12 de dic. de 2019 · Chris Rockett production and applications engineer, LightSources, Inc. As ultraviolet (UV) radiation consists of photons with high energy relative to visible light, it can cause degradation in the form of physical and chemical changes in susceptible materials. The degradation effects of UV are of concern to designers and users of a wide variety ...
1 de oct. de 2022 · Na 2 S 2 O 8 was activated by ultraviolet light to degrade CIP.. The degradation rate of CIP reached 94 % in 40 min. • Humic acid and HCO 3 − had obvious inhibitory effects.. 1 O 2, O 2 − ∙, ∙OH and SO 4 − ∙ were the major active species.
1 de dic. de 2004 · Direct photolysis (ultraviolet light at 254 nm) of dielectric oils dissolved in alkaline isopropanol lead to 92% removal of PCBs in 60 min. The observed mechanism was again that of reductive ...
1 de ene. de 2022 · The inactivation of algae by a combined process of peracetic acid and ultraviolet irradiation (UV/PAA) was systematically investigated by choosing Microcystis aeruginosa as the reference algal species. Both hydroxyl (HO •) and organic radicals (RO •) contributed to the cell integrity loss and RO • played the dominant roles. The algae inactivation kinetics can be well fitted by the ...
1 de oct. de 2019 · Previous studies have found that HO • can high-efficiently degrade various β-blockers [7], [17], [18], [19]. Therefore, it is reasonable to expect that the VUV radiation that can produce HO • through the activation of water molecules in absence of any other chemicals may be a promising technology for the treatment of β-blockers.
