Efficient Remediation of p-chloroaniline Contaminated Soil by Activated Persulfate Using Ball Milling Nanosized Zero Valent Iron/Biochar Composite: Performance and Mechanisms.

ABSTRACT: In this study, efficient remediation of p-chloroaniline (PCA)-contaminated soil by activated persulfate (PS) using nanosized zero-valent iron/biochar (B-nZVI/BC) through the ball milling method was conducted. Under the conditions of 4.8 g kg^-1 B-nZVI/BC and 42.0 mmol L^-1 PS with pH 7.49, the concentration of PCA in soil was dramatically decreased from 3.64 mg kg^-1 to 1.33 mg kg^-1, which was much lower than the remediation target value of 1.96 mg kg^-1. Further increasing B-nZVI/BC dosage and PS concentration to 14.4 g kg^-1 and 126.0 mmol L^-1, the concentration of PCA was as low as 0.15 mg kg^-1, corresponding to a degradation efficiency of 95.9%. Electron paramagnetic resonance (EPR) signals indica

SUBMITTER: Guo Z 

PROVIDER: S-EPMC10180579 | biostudies-literature | 2023 Apr

REPOSITORIES: biostudies-literature