Mechanism of carbon tetrachloride reduction in ferrous ion activated calcium peroxide system in the presence of methanol.

ABSTRACT: This study investigated the reductive initiation for the depletion of highly oxidized/perhalogenated pollutants, specifically the degradation of carbon tetrachloride (CT) was induced by adding methanol (MeOH) into a ferrous ion (Fe(II)) activated calcium peroxide (CaO₂) system. The results indicated that CT could be completely degraded within 20 min at CaO₂/Fe(II)/MeOH/CT molar ratio of 30/40/10/1 in this system. Scavenging tests suggested that both superoxide radical anion (O₂ ^•-) and carbon dioxide radical anion (CO₂ ^•-) were predominant reactive species responsible for CT destruction. Hydroxymethyl radicals (^•CH₂OH), an intermediate in the transformation of MeOH, could also initiate CT degradation by

SUBMITTER: Tang P 

PROVIDER: S-EPMC6777862 | biostudies-literature | 2019 Apr

REPOSITORIES: biostudies-literature