The destruction of benzene by calcium peroxide activated with Fe(II) in water.

ABSTRACT: The ability of Fe(II)-activated calcium peroxide (CaO₂) to remove benzene is examined with a series of batch experiments. The results showed that benzene concentrations were reduced by 20 to 100% within 30 min. The magnitude of removal was dependent on the CaO₂/Fe(II)/Benzene molar ratio, with much greater destruction observed for ratios of 4/4/1 or greater. An empirical equation was developed to quantify the destruction rate dependence on reagent composition. The presence of oxidative hydroxyl radicals (HO^•) and reductive radicals (primarily O₂^•-) was identified by probe compound testing and electron paramagnetic resonance (EPR) tests. The results of the EPR tests indicated that the application of CaO₂/Fe(II) enabled the ra

SUBMITTER: Xue Y 

PROVIDER: S-EPMC5607478 | biostudies-literature | 2016 Oct

REPOSITORIES: biostudies-literature