Sulfate Radical Scavenging by Mineral Surfaces in Persulfate-Driven Oxidation Systems: Reaction Rate Constants and Implications.

ABSTRACT: Activated persulfate (PS) is a common method used to generate sulfate radicals (SO₄^•-), a powerful oxidant capable of degrading a broad array of environmental contaminants. The reaction of SO₄^•- with nontarget species (i.e., scavenging) contributes significantly to treatment inefficiency. Radical scavenging in this manner has been quantified for nontarget chemical species in the aqueous phase but has never been quantified for solid phase media. Kinetic analysis and laboratory methods were developed to quantify the SO₄^•- scavenging rate constant (k_≡S) for alumina, a naturally occurring mineral in soil and aquifer materials. SO₄^•- were generated in UV and thermally activated persulfate (

SUBMITTER: Crincoli KR 

PROVIDER: S-EPMC7534697 | biostudies-literature | 2020 Feb

REPOSITORIES: biostudies-literature