Enhanced Degradation of Trichloroethene by Sodium Percarbonate Activated with Fe (II) in the Presence of Citric Acid

Authors

Xueke Zang
Xiaogang Gu, East China University of Science and TechnologyFollow
Shuguang Lu, East China University of Science and TechnologyFollow
Zhouwei MiaoFollow
Xiang Zhang, Anhui University
Xiaori Fu, East China University of Science and TechnologyFollow
George Yuzhu Fu, Georgia Southern UniversityFollow
Zhaofu Qiu, East China University of Science and Technology
Qian Sui, East China University of Science and Technology

Document Type

Article

Publication Date

2017

Publication Title

Water Science and Technology: Water Supply

DOI

10.2166/ws.2016.117

Abstract

Trichloroethene (TCE) degradation by Fe(II)-activated sodium percarbonate (SPC) in the presence of citric acid (CA) in aqueous solution was investigated. The results indicated that the presence of CA enhanced TCE degradation significantly by promoting HO• generation. The presence of Cl⁻, HCO₃⁻ and the initial solution pH appeared to be not negligible on the effect of TCE oxidation, while humic acid had no influence on TCE degradation. The generation of HO• and O₂⁻• in the SPC/Fe(II)/CA system was confirmed with chemical probes, and the radical scavenging tests showed that TCE degradation was due to direct oxidation by HO•. Acidic pH condition was favorable for TCE degradation. In summary, this study provided detailed information for the application of the CA-enhanced Fe(II)-activated SPC technique for TCE-contaminated groundwater remediation.

Recommended Citation

Zang, Xueke, Xiaogang Gu, Shuguang Lu, Zhouwei Miao, Xiang Zhang, Xiaori Fu, George Yuzhu Fu, Zhaofu Qiu, Qian Sui. 2017. "Enhanced Degradation of Trichloroethene by Sodium Percarbonate Activated with Fe (II) in the Presence of Citric Acid." Water Science and Technology: Water Supply, 17 (3): 665-673: IWA Publishing. doi: 10.2166/ws.2016.117
https://digitalcommons.georgiasouthern.edu/civil-eng-facpubs/50