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

Xueke Zang; Xiaogang Gu; Shuguang Lu; Zhouwei Miao; Xiang Zhang; Xiaori Fu; George Yuzhu Fu; Zhaofu Qiu; Qian Sui

doi:10.2166/ws.2016.117

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

Xueke Zang, Xiaogang Gu, Shuguang Lu, Zhouwei Miao, Xiang Zhang, Xiaori Fu, George Yuzhu Fu, Zhaofu Qiu, Qian Sui

Civil Engineering & Construction

Research output: Contribution to journal › Article › peer-review

14 Scopus citations

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, HCO3and 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.

Original language	American English
Journal	Water Science and Technology: Water Supply
Volume	17
DOIs	https://doi.org/10.2166/ws.2016.117
State	Published - Jan 1 2017

Keywords

Citric acid
Ferrous ion
Groundwater remediation
Sodium percarbonate
Trichloroethene

DC Disciplines

Civil and Environmental Engineering

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@article{a3a7554d666b40fc82f725f76bf10cf7,

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

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, HCO3and 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.",

keywords = "Citric acid, Ferrous ion, Groundwater remediation, Sodium percarbonate, Trichloroethene",

author = "Xueke Zang and Xiaogang Gu and Shuguang Lu and Zhouwei Miao and Xiang Zhang and Xiaori Fu and Fu, {George Yuzhu} and Zhaofu Qiu and Qian Sui",

year = "2017",

month = jan,

day = "1",

doi = "10.2166/ws.2016.117",

language = "American English",

volume = "17",

journal = "Water Science and Technology: Water Supply",

issn = "1606-9749",

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TY - JOUR

T1 - Enhanced Degradation of Trichloroethene by Sodium Percarbonate Activated with Fe (II) in the Presence of Citric Acid

AU - Zang, Xueke

AU - Gu, Xiaogang

AU - Lu, Shuguang

AU - Miao, Zhouwei

AU - Zhang, Xiang

AU - Fu, Xiaori

AU - Fu, George Yuzhu

AU - Qiu, Zhaofu

AU - Sui, Qian

PY - 2017/1/1

Y1 - 2017/1/1

N2 - 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, HCO3and 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.

AB - 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, HCO3and 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.

KW - Citric acid

KW - Ferrous ion

KW - Groundwater remediation

KW - Sodium percarbonate

KW - Trichloroethene

UR - https://digitalcommons.georgiasouthern.edu/civil-eng-facpubs/50

UR - https://iwaponline.com/ws/article-abstract/17/3/665/30650/Enhanced-degradation-of-trichloroethene-by-sodium?redirectedFrom=fulltext

U2 - 10.2166/ws.2016.117

DO - 10.2166/ws.2016.117

M3 - Article

SN - 1606-9749

VL - 17

JO - Water Science and Technology: Water Supply

JF - Water Science and Technology: Water Supply

ER -

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

Abstract

Keywords

DC Disciplines

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