Revisit the alkaline activation of peroxydisulfate and peroxymonosulfate

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24620%2F22%3A00010073" target="_blank" >RIV/46747885:24620/22:00010073 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S2211339822000648" target="_blank" >https://www.sciencedirect.com/science/article/pii/S2211339822000648</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.coche.2022.100854" target="_blank" >10.1016/j.coche.2022.100854</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Revisit the alkaline activation of peroxydisulfate and peroxymonosulfate

Popis výsledku v původním jazyce

Many aspects of sulfate radical-advanced oxidation processes, particularly under alkaline medium, are largely debatable. Based on the available literature, the possible mechanisms of both activation of peroxydisulfate (PDS) and peroxymonosulfate (PMS) under alkaline conditions are reviewed. Thereby, several products (SO52-, HO2-) are formed presenting a complex interplay since they may be involved in persulfate activation and radical scavenging. Since both PMS and HO2- have dissociation centers, alkaline activation of persulfates is very strongly dependent on pH. Owing to some inconsistencies in the state-of-the-art literature, it seems that the activation of both PDS and PMS should be reconsidered in more detailed mechanistic studies. Relevant for alkaline activation, sulfate radical-based oxidation of hydroxide ions yielding hydroxyl radicals is not important for pHb 10.4 in chloride-poor waters (bb1.0 mM), while in the presence of chloride (e.g. 1.0 mM), hydroxyl radicals may be the most important reactive species.

Název v anglickém jazyce

Revisit the alkaline activation of peroxydisulfate and peroxymonosulfate

Popis výsledku anglicky

Many aspects of sulfate radical-advanced oxidation processes, particularly under alkaline medium, are largely debatable. Based on the available literature, the possible mechanisms of both activation of peroxydisulfate (PDS) and peroxymonosulfate (PMS) under alkaline conditions are reviewed. Thereby, several products (SO52-, HO2-) are formed presenting a complex interplay since they may be involved in persulfate activation and radical scavenging. Since both PMS and HO2- have dissociation centers, alkaline activation of persulfates is very strongly dependent on pH. Owing to some inconsistencies in the state-of-the-art literature, it seems that the activation of both PDS and PMS should be reconsidered in more detailed mechanistic studies. Relevant for alkaline activation, sulfate radical-based oxidation of hydroxide ions yielding hydroxyl radicals is not important for pHb 10.4 in chloride-poor waters (bb1.0 mM), while in the presence of chloride (e.g. 1.0 mM), hydroxyl radicals may be the most important reactive species.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20402 - Chemical process engineering

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2022

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Current Opinion in Chemical Engineering

ISSN

2211-3398

e-ISSN

—

Svazek periodika

37

Číslo periodika v rámci svazku

September

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

6

Strana od-do

—

Kód UT WoS článku

000844677800001

EID výsledku v databázi Scopus

2-s2.0-85135417870