Degradation of trichloroethene by siderite-catalyzed hydrogen peroxide and persulfate: Investigation of reaction mechanisms and degradation products.

ABSTRACT: A binary catalytic system, siderite-catalyzed hydrogen peroxide (H₂O₂) coupled with persulfate (S₂O₈^2-), was investigated for the remediation of trichloroethene (TCE) contamination. Batch experiments were conducted to investigate reaction mechanisms, oxidant decomposition rates, and degradation products. By using high performance liquid chromatography (HPLC) coupled with electron paramagnetic resonance (EPR), we identified four radicals (hydroxyl (HO·), sulfate (SO₄^-·), hydroperoxyl (HO₂·), and superoxide (O₂^-·)) in the siderite-catalyzed H₂O₂-S₂O₈^2- system. In the absence of S₂O₈^2- (i.e., sider

SUBMITTER: Yan N 

PROVIDER: S-EPMC4520253 | biostudies-literature | 2015 Aug

REPOSITORIES: biostudies-literature