Perchloroethylene (PCE) Oxidation by Percarbonate in Fe2+- Catalyzed Aqueous Solution: PCE Performance and Its Removal Mechanism

Zhouwei Miao; Xiaogang Gu; Shuguang Lu; Xuke Zang; Xiaoliang Wu; Minhui Xu; Landry Biyoghe Bi Ndong; Zhaofu Qiu; Qian Sui; George Yuzhu Fu

doi:10.1016/j.chemosphere.2014.09.065

Perchloroethylene (PCE) Oxidation by Percarbonate in Fe2+- Catalyzed Aqueous Solution: PCE Performance and Its Removal Mechanism

Zhouwei Miao, Xiaogang Gu, Shuguang Lu, Xuke Zang, Xiaoliang Wu, Minhui Xu, Landry Biyoghe Bi Ndong, Zhaofu Qiu, Qian Sui, George Yuzhu Fu

Civil Engineering & Construction

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

83 Scopus citations

Abstract

The performance of Fe²⁺-catalyzed sodium percarbonate (SPC) stimulating the oxidation of perchloroethylene (PCE) in groundwater remediation was investigated. The experimental results showed that PCE could be completely oxidized in 5min at 20°C with a Fe²⁺/SPC/PCE molar ratio of 8/8/1, indicating the effectiveness of Fe²⁺-catalyzed SPC oxidation for PCE degradation. Fe²⁺-catalyzed SPC oxidation was suitable for the nearly neutral pH condition, which was superior to the conventional Fenton oxidation in acidic condition. In addition, the investigations by using hydroxyl radical scavengers and free radical probe compounds elucidated that PCE was degraded mainly by hydroxyl radical (HO) oxidation in Fe²⁺/SPC system. In conclusion, Fe²⁺-catalyzed SPC oxidation is a highly promising technique for PCE-contaminated groundwater remediation, but more complex constituents in groundwater should be carefully considered for its practical application.

Original language	American English
Journal	Chemosphere
Volume	119
DOIs	https://doi.org/10.1016/j.chemosphere.2014.09.065
State	Published - Jan 1 2015

Keywords

Aqueous solutions
Free radical scavengers
Groundwater
Hydroxyl radicals
Oxidation
Remediation
Sodium percarbonate
Tetrachloroethylene
pH

DC Disciplines

Civil and Environmental Engineering

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https://pubag.nal.usda.gov/catalog/5453818

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@article{9b9928eed8994482b141c738aac53ba3,

title = "Perchloroethylene (PCE) Oxidation by Percarbonate in Fe2+- Catalyzed Aqueous Solution: PCE Performance and Its Removal Mechanism",

abstract = "The performance of Fe2+-catalyzed sodium percarbonate (SPC) stimulating the oxidation of perchloroethylene (PCE) in groundwater remediation was investigated. The experimental results showed that PCE could be completely oxidized in 5min at 20°C with a Fe2+/SPC/PCE molar ratio of 8/8/1, indicating the effectiveness of Fe2+-catalyzed SPC oxidation for PCE degradation. Fe2+-catalyzed SPC oxidation was suitable for the nearly neutral pH condition, which was superior to the conventional Fenton oxidation in acidic condition. In addition, the investigations by using hydroxyl radical scavengers and free radical probe compounds elucidated that PCE was degraded mainly by hydroxyl radical (HO) oxidation in Fe2+/SPC system. In conclusion, Fe2+-catalyzed SPC oxidation is a highly promising technique for PCE-contaminated groundwater remediation, but more complex constituents in groundwater should be carefully considered for its practical application.",

keywords = "Aqueous solutions, Free radical scavengers, Groundwater, Hydroxyl radicals, Oxidation, Remediation, Sodium percarbonate, Tetrachloroethylene, pH",

author = "Zhouwei Miao and Xiaogang Gu and Shuguang Lu and Xuke Zang and Xiaoliang Wu and Minhui Xu and Ndong, {Landry Biyoghe Bi} and Zhaofu Qiu and Qian Sui and Fu, {George Yuzhu}",

note = "Publisher Copyright: {\textcopyright} 2014 Elsevier Ltd.",

year = "2015",

month = jan,

day = "1",

doi = "10.1016/j.chemosphere.2014.09.065",

language = "American English",

volume = "119",

journal = "Chemosphere",

issn = "0045-6535",

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TY - JOUR

T1 - Perchloroethylene (PCE) Oxidation by Percarbonate in Fe2+- Catalyzed Aqueous Solution: PCE Performance and Its Removal Mechanism

AU - Miao, Zhouwei

AU - Gu, Xiaogang

AU - Lu, Shuguang

AU - Zang, Xuke

AU - Wu, Xiaoliang

AU - Xu, Minhui

AU - Ndong, Landry Biyoghe Bi

AU - Qiu, Zhaofu

AU - Sui, Qian

AU - Fu, George Yuzhu

PY - 2015/1/1

Y1 - 2015/1/1

N2 - The performance of Fe2+-catalyzed sodium percarbonate (SPC) stimulating the oxidation of perchloroethylene (PCE) in groundwater remediation was investigated. The experimental results showed that PCE could be completely oxidized in 5min at 20°C with a Fe2+/SPC/PCE molar ratio of 8/8/1, indicating the effectiveness of Fe2+-catalyzed SPC oxidation for PCE degradation. Fe2+-catalyzed SPC oxidation was suitable for the nearly neutral pH condition, which was superior to the conventional Fenton oxidation in acidic condition. In addition, the investigations by using hydroxyl radical scavengers and free radical probe compounds elucidated that PCE was degraded mainly by hydroxyl radical (HO) oxidation in Fe2+/SPC system. In conclusion, Fe2+-catalyzed SPC oxidation is a highly promising technique for PCE-contaminated groundwater remediation, but more complex constituents in groundwater should be carefully considered for its practical application.

AB - The performance of Fe2+-catalyzed sodium percarbonate (SPC) stimulating the oxidation of perchloroethylene (PCE) in groundwater remediation was investigated. The experimental results showed that PCE could be completely oxidized in 5min at 20°C with a Fe2+/SPC/PCE molar ratio of 8/8/1, indicating the effectiveness of Fe2+-catalyzed SPC oxidation for PCE degradation. Fe2+-catalyzed SPC oxidation was suitable for the nearly neutral pH condition, which was superior to the conventional Fenton oxidation in acidic condition. In addition, the investigations by using hydroxyl radical scavengers and free radical probe compounds elucidated that PCE was degraded mainly by hydroxyl radical (HO) oxidation in Fe2+/SPC system. In conclusion, Fe2+-catalyzed SPC oxidation is a highly promising technique for PCE-contaminated groundwater remediation, but more complex constituents in groundwater should be carefully considered for its practical application.

KW - Aqueous solutions

KW - Free radical scavengers

KW - Groundwater

KW - Hydroxyl radicals

KW - Oxidation

KW - Remediation

KW - Sodium percarbonate

KW - Tetrachloroethylene

KW - pH

UR - https://digitalcommons.georgiasouthern.edu/civil-eng-facpubs/49

UR - https://pubag.nal.usda.gov/catalog/5453818

U2 - 10.1016/j.chemosphere.2014.09.065

DO - 10.1016/j.chemosphere.2014.09.065

M3 - Article

SN - 0045-6535

VL - 119

JO - Chemosphere

JF - Chemosphere

ER -

Perchloroethylene (PCE) Oxidation by Percarbonate in Fe2+- Catalyzed Aqueous Solution: PCE Performance and Its Removal Mechanism

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