Application of ascorbic acid to enhance trichloroethene degradation by Fe(III)-activated calcium peroxide

Xiang Zhang; Xiaogang Gu; Shuguang Lu; Mark L. Brusseau; Minhui Xu; Xiaori Fu; Zhaofu Qiu; Qian Sui

doi:10.1016/j.cej.2017.05.004

Application of ascorbic acid to enhance trichloroethene degradation by Fe(III)-activated calcium peroxide

Xiang Zhang, Xiaogang Gu, Shuguang Lu, Mark L. Brusseau, Minhui Xu, Xiaori Fu, Zhaofu Qiu, Qian Sui

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

59 Scopus citations

Abstract

The enhancement effect of an environmentally friendly reducing agent, ascorbic acid (AA), on trichloroethene (TCE) degradation by Fe(III)-activated calcium peroxide (CP) was evaluated. The addition of AA accelerated the transformation of Fe(III) to Fe(II), and the complexation of Fe(III)/Fe(II) with AA and its products alleviated the precipitation of dissolved iron. These impacts enhanced the generation of reactive oxygen species (ROSs). Investigation of ROSs using chemical probe tests, electron paramagnetic resonance (EPR) tests, and radical scavenger tests strongly confirm large production of hydroxyl radicals (HO^[rad]) that is responsible for TCE degradation. The generation of Cl⁻ from the degraded TCE was complete in the enhanced CP/Fe(III)/AA system. The investigation of solution matrix effects showed that the TCE degradation rate decreases with the increase in solution pH, while Cl⁻, SO₄²⁻ and NO₃⁻ anions have minor impact. Conversely, HCO₃⁻ significantly inhibited TCE degradation due to pH elevation and HO^[rad] scavenging. The results of experiments performed using actual groundwater indicated that an increase in reagent doses are required for effective TCE removal. In summary, the potential effectiveness of the CP/Fe(III)/AA oxidation system for remediation of TCE contaminated groundwater has been demonstrated. Additional research is needed to develop the system for practical implementation.

Original language	English (US)
Pages (from-to)	188-198
Number of pages	11
Journal	Chemical Engineering Journal
Volume	325
DOIs	https://doi.org/10.1016/j.cej.2017.05.004
State	Published - 2017

Keywords

Ascorbic acid
Calcium peroxide
Fe(III) reduction
Groundwater remediation
ISCO
Trichloroethene

ASJC Scopus subject areas

General Chemistry
Environmental Chemistry
General Chemical Engineering
Industrial and Manufacturing Engineering

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10.1016/j.cej.2017.05.004

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@article{35fc9b24a254476593cf9f2b3b9aae02,

title = "Application of ascorbic acid to enhance trichloroethene degradation by Fe(III)-activated calcium peroxide",

abstract = "The enhancement effect of an environmentally friendly reducing agent, ascorbic acid (AA), on trichloroethene (TCE) degradation by Fe(III)-activated calcium peroxide (CP) was evaluated. The addition of AA accelerated the transformation of Fe(III) to Fe(II), and the complexation of Fe(III)/Fe(II) with AA and its products alleviated the precipitation of dissolved iron. These impacts enhanced the generation of reactive oxygen species (ROSs). Investigation of ROSs using chemical probe tests, electron paramagnetic resonance (EPR) tests, and radical scavenger tests strongly confirm large production of hydroxyl radicals (HO[rad]) that is responsible for TCE degradation. The generation of Cl− from the degraded TCE was complete in the enhanced CP/Fe(III)/AA system. The investigation of solution matrix effects showed that the TCE degradation rate decreases with the increase in solution pH, while Cl−, SO42− and NO3− anions have minor impact. Conversely, HCO3− significantly inhibited TCE degradation due to pH elevation and HO[rad] scavenging. The results of experiments performed using actual groundwater indicated that an increase in reagent doses are required for effective TCE removal. In summary, the potential effectiveness of the CP/Fe(III)/AA oxidation system for remediation of TCE contaminated groundwater has been demonstrated. Additional research is needed to develop the system for practical implementation.",

keywords = "Ascorbic acid, Calcium peroxide, Fe(III) reduction, Groundwater remediation, ISCO, Trichloroethene",

author = "Xiang Zhang and Xiaogang Gu and Shuguang Lu and Brusseau, {Mark L.} and Minhui Xu and Xiaori Fu and Zhaofu Qiu and Qian Sui",

note = "Funding Information: This study was financially supported by the grant from the National Natural Science Foundation of China (41373094), Natural Science Foundation of Shanghai (16ZR1407200). The contributions of Mark Brusseau were supported by the NIEHS Superfund Research Program (P42 ES04940). Publisher Copyright: {\textcopyright} 2017 Elsevier B.V.",

year = "2017",

doi = "10.1016/j.cej.2017.05.004",

language = "English (US)",

volume = "325",

pages = "188--198",

journal = "Chemical Engineering Journal",

issn = "1385-8947",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Application of ascorbic acid to enhance trichloroethene degradation by Fe(III)-activated calcium peroxide

AU - Zhang, Xiang

AU - Gu, Xiaogang

AU - Lu, Shuguang

AU - Brusseau, Mark L.

AU - Xu, Minhui

AU - Fu, Xiaori

AU - Qiu, Zhaofu

AU - Sui, Qian

N1 - Funding Information: This study was financially supported by the grant from the National Natural Science Foundation of China (41373094), Natural Science Foundation of Shanghai (16ZR1407200). The contributions of Mark Brusseau were supported by the NIEHS Superfund Research Program (P42 ES04940). Publisher Copyright: © 2017 Elsevier B.V.

PY - 2017

Y1 - 2017

N2 - The enhancement effect of an environmentally friendly reducing agent, ascorbic acid (AA), on trichloroethene (TCE) degradation by Fe(III)-activated calcium peroxide (CP) was evaluated. The addition of AA accelerated the transformation of Fe(III) to Fe(II), and the complexation of Fe(III)/Fe(II) with AA and its products alleviated the precipitation of dissolved iron. These impacts enhanced the generation of reactive oxygen species (ROSs). Investigation of ROSs using chemical probe tests, electron paramagnetic resonance (EPR) tests, and radical scavenger tests strongly confirm large production of hydroxyl radicals (HO[rad]) that is responsible for TCE degradation. The generation of Cl− from the degraded TCE was complete in the enhanced CP/Fe(III)/AA system. The investigation of solution matrix effects showed that the TCE degradation rate decreases with the increase in solution pH, while Cl−, SO42− and NO3− anions have minor impact. Conversely, HCO3− significantly inhibited TCE degradation due to pH elevation and HO[rad] scavenging. The results of experiments performed using actual groundwater indicated that an increase in reagent doses are required for effective TCE removal. In summary, the potential effectiveness of the CP/Fe(III)/AA oxidation system for remediation of TCE contaminated groundwater has been demonstrated. Additional research is needed to develop the system for practical implementation.

AB - The enhancement effect of an environmentally friendly reducing agent, ascorbic acid (AA), on trichloroethene (TCE) degradation by Fe(III)-activated calcium peroxide (CP) was evaluated. The addition of AA accelerated the transformation of Fe(III) to Fe(II), and the complexation of Fe(III)/Fe(II) with AA and its products alleviated the precipitation of dissolved iron. These impacts enhanced the generation of reactive oxygen species (ROSs). Investigation of ROSs using chemical probe tests, electron paramagnetic resonance (EPR) tests, and radical scavenger tests strongly confirm large production of hydroxyl radicals (HO[rad]) that is responsible for TCE degradation. The generation of Cl− from the degraded TCE was complete in the enhanced CP/Fe(III)/AA system. The investigation of solution matrix effects showed that the TCE degradation rate decreases with the increase in solution pH, while Cl−, SO42− and NO3− anions have minor impact. Conversely, HCO3− significantly inhibited TCE degradation due to pH elevation and HO[rad] scavenging. The results of experiments performed using actual groundwater indicated that an increase in reagent doses are required for effective TCE removal. In summary, the potential effectiveness of the CP/Fe(III)/AA oxidation system for remediation of TCE contaminated groundwater has been demonstrated. Additional research is needed to develop the system for practical implementation.

KW - Ascorbic acid

KW - Calcium peroxide

KW - Fe(III) reduction

KW - Groundwater remediation

KW - ISCO

KW - Trichloroethene

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U2 - 10.1016/j.cej.2017.05.004

DO - 10.1016/j.cej.2017.05.004

M3 - Article

AN - SCOPUS:85019436414

SN - 1385-8947

VL - 325

SP - 188

EP - 198

JO - Chemical Engineering Journal

JF - Chemical Engineering Journal

ER -

Application of ascorbic acid to enhance trichloroethene degradation by Fe(III)-activated calcium peroxide

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