Iron electrolysis-assisted peroxymonosulfate chemical oxidation for the remediation of chlorophenol-contaminated groundwater.

ABSTRACT:

Background

Electrolysis with an iron anode is a novel way to provide ferrous activators for chemical oxidation. The objective of this study is to evaluate the performance of peroxymonosulfate (PMS) for chlorophenol destruction when compared with H₂O₂ and persulfate (PS), and to see whether the electrolysis mode facilitates the buildup of conditions that favor the activation of PMS and removal of chlorophenols.

Results

Ferrous species can effectively activate the PMS over a wide pH range. In comparison with H₂O₂ and PS, PMS is less sensitive to the solution's pH and possesses stronger oxidation capability at alkaline pHs. The optimal molar ratio of PMS to Fe(II) activator is 1:1 for the destruction of 2,4-dichlorophenol (2,4-DCP). T

SUBMITTER: Yang N 

PROVIDER: S-EPMC6247945 | biostudies-literature | 2016 Apr

REPOSITORIES: biostudies-literature