Effect of pyrite on the treatment of chlorophenolic compounds with zero-valent iron-Fenton process under uncontrolled pH conditions: reaction mechanism and biodegradability.

ABSTRACT: This current study explored the effect of pyrite on the treatment of chlorophenolic compounds (CP) by Fenton process with micron-sized zero-valent iron (ZVI) as the catalyst. The experiments were conducted in batch reactors with 100 mg L^-1 CP, 0-0.02 M H₂O₂, and variable pyrite and ZVI doses (0-1 g L^-1). Our findings show that while the reactor with 1 g L^-1 ZVI as the only catalyst achieved only 10% CP removal efficiency due to rapid ZVI surface passivation and ZVI particle aggregation, the CP removal efficiency increased with increasing pyrite dose and reached 100% within couple of minutes in reactors with 0.8 g L^-1 pyrite and 0.2 g L^-1 ZVI. The CP removal was mainly driven by the oxidative treatment of CPs with

SUBMITTER: Oral O 

PROVIDER: S-EPMC11297809 | biostudies-literature | 2024 Jul

REPOSITORIES: biostudies-literature