Topic
Hydrogen peroxide
About: Hydrogen peroxide is a research topic. Over the lifetime, 42583 publications have been published within this topic receiving 1043732 citations. The topic is also known as: H2O2 & dioxidane.
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TL;DR: The Photo-Fenton-Process as discussed by the authors was employed to degrade biorefractory organic pollutants in landfill leachate, and the results showed that the photo-fenton-process gave a higher COD degradation and a reduced energy consumption of at least 30% compared to the H 2 O 2 /UVC process.
Abstract: The Photo-Fenton-Process utilizing the combinations Fe(II)/H 2 O 2 /UVA and Fe(III) oxalate/H 2 O 2 /UVA was employed with success to degrade biorefractory organic pollutants in landfill leachate. The rate of degradation of the organic pollutants depends on the concentrations of hydrogen peroxide and the iron catalyst, the pH value and the concentration of dissolved oxygen. A comparison of the Photo-Fenton-Process with the H 2 O 2 /Fe(II) process and the H 2 O 2 /UVC process shows that the Photo-Fenton-Process gives a higher COD degradation and a reduced energy consumption of at least 30% compared to the H 2 O 2 /UVC process. By using photogenerated Fe(II) the amount of the iron catalyst required and the volume of sludge produced are strongly reduced.
184 citations
TL;DR: In this article, a novel alkaline direct borohydride fuel cell (ADBFC) using varying concentrations of hydrogen peroxide as oxidant and sodium borhydride with sodium hydroxide, each of differing concentration, as fuel is reported.
184 citations
TL;DR: Observations suggest that the sulfhydryl of cysteine in PRP could function as a strong nucleophile to attack and destroy H2O2 and .OH.
184 citations
TL;DR: The efficient and simple generation of (1)O2 using the KIO4/KOH system without any light irradiation can be employed for the selective oxidation of aqueous organic compounds under neutral and near-alkaline conditions.
Abstract: A nonphotochemical generation of singlet oxygen (1O2) using potassium periodate (KIO4) in alkaline condition (pH > 8) was investigated for selective oxidation of aqueous organic pollutants. The generation of 1O2 was initiated by the spontaneous reaction between IO4– and hydroxyl ions, along with a stoichiometric conversion of IO4– to iodate (IO3–). The reactivity of in-situ-generated 1O2 was monitored by using furfuryl alcohol (FFA) as a model substrate. The formation of 1O2 in the KIO4/KOH system was experimentally confirmed using electron spin resonance (ESR) measurements in corroboration with quenching studies using azide as a selective 1O2 scavenger. The reaction in the KIO4/KOH solution in both oxic and anoxic conditions initiated the generation of superoxide ion as a precursor of the singlet oxygen (confirmed by using superoxide scavengers), and the presence of molecular oxygen was not required as a precursor of 1O2. Although hydrogen peroxide had no direct influence on the FFA oxidation process, th...
184 citations
TL;DR: In the intact heart, finely adjusted NO concentrations regulate mitochondrial O2uptake and superoxide anion production (reflected by H2O2), which in turn contributes to the physiological clearance of NO through peroxynitrite formation.
Abstract: Isolated rat heart perfused with 1.5–7.5 μM NO solutions or bradykinin, which activates endothelial NO synthase, showed a dose-dependent decrease in myocardial O2uptake from 3.2 ± 0.3 to 1.6 ± 0.1 ...
184 citations