Immobilized palladium-catalyzed electro-Fenton's degradation of chlorobenzene in groundwater

Roya Nazari; Ljiljana Rajić; Ali Ciblak; Sebastián Hernández; Ibrahim E. Mousa; Wei Zhou; Dibakar Bhattacharyya; Akram N. Alshawabkeh

doi:10.1016/j.chemosphere.2018.10.143

Immobilized palladium-catalyzed electro-Fenton's degradation of chlorobenzene in groundwater

Roya Nazari, Ljiljana Rajić, Ali Ciblak, Sebastián Hernández, Ibrahim E. Mousa, Wei Zhou, Dibakar Bhattacharyya, Akram N. Alshawabkeh

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

24 Scopus citations

Abstract

This study investigates the effect of palladium (Pd) form on the electrochemical degradation of chlorobenzene in groundwater by palladium-catalyzed electro-Fenton (EF) reaction. In batch and flow-through column reactors, EF was initiated via in-situ electrochemical formation of hydrogen peroxide (H₂O₂) supported by Pd on alumina powder or by palladized polyacrylic acid (PAA) in a polyvinylidene fluoride (PVDF) membrane (Pd-PVDF/PAA). In a mixed batch reactor containing 10 mg L⁻¹ Fe²⁺, 2 g L⁻¹ of catalyst in powder form (1% Pd, 20 mg L⁻¹ of Pd) and an initial pH of 3, chlorobenzene was degraded under 120 mA current following a first-order decay rate showing 96% removal within 60 min. Under the same conditions, a rotating Pd-PVDF/PAA disk produced 88% of chlorobenzene degradation. In the column experiment with automatic pH adjustment, 71% of chlorobenzene was removed within 120 min with 10 mg L⁻¹ Fe²⁺, and 2 g L⁻¹ catalyst in pellet form (0.5% Pd, 10 mg L⁻¹ of Pd) under 60 mA. The EF reaction can be achieved under flow, without external pH adjustment and H₂O₂ addition, and can be applied for in-situ groundwater treatment. Furthermore, the rotating PVDF-PAA membrane with immobilized Pd-catalyst showed an effective and low maintenance option for employing Pd catalyst for water treatment.

Original language	English
Pages (from-to)	556-563
Number of pages	8
Journal	Chemosphere
Volume	216
DOIs	https://doi.org/10.1016/j.chemosphere.2018.10.143
State	Published - Feb 2019

Bibliographical note

Funding Information:
This work was supported by the National Institute of Environmental Health Sciences (NIEHS, Grants No P42ES017198, Northeastern University, and P42ES007380, University of Kentucky). We appreciate the assistance in the different assays by Department of Civil & Environmental Engineering, Northeastern University; and the Chemical and Materials Engineering Department, University of Kentucky. Content is solely the responsibility of the authors and does not necessarily represent the official views of the NIEHS or the National Institutes of Health.

Funding Information:
This work was supported by the National Institute of Environmental Health Sciences ( NIEHS , Grants No P42ES017198 , Northeastern University , and P42ES007380 , University of Kentucky ). We appreciate the assistance in the different assays by Department of Civil & Environmental Engineering, Northeastern University; and the Chemical and Materials Engineering Department, University of Kentucky. Content is solely the responsibility of the authors and does not necessarily represent the official views of the NIEHS or the National Institutes of Health.

Publisher Copyright:
© 2018 Elsevier Ltd

Keywords

Chlorobenzene
Electro-Fenton's reaction
Groundwater remediation
Pd catalyst
Three-electrode flow system

ASJC Scopus subject areas

Environmental Engineering
Environmental Chemistry
Chemistry (all)
Pollution
Health, Toxicology and Mutagenesis

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10.1016/j.chemosphere.2018.10.143

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title = "Immobilized palladium-catalyzed electro-Fenton's degradation of chlorobenzene in groundwater",

abstract = "This study investigates the effect of palladium (Pd) form on the electrochemical degradation of chlorobenzene in groundwater by palladium-catalyzed electro-Fenton (EF) reaction. In batch and flow-through column reactors, EF was initiated via in-situ electrochemical formation of hydrogen peroxide (H2O2) supported by Pd on alumina powder or by palladized polyacrylic acid (PAA) in a polyvinylidene fluoride (PVDF) membrane (Pd-PVDF/PAA). In a mixed batch reactor containing 10 mg L−1 Fe2+, 2 g L−1 of catalyst in powder form (1% Pd, 20 mg L−1 of Pd) and an initial pH of 3, chlorobenzene was degraded under 120 mA current following a first-order decay rate showing 96% removal within 60 min. Under the same conditions, a rotating Pd-PVDF/PAA disk produced 88% of chlorobenzene degradation. In the column experiment with automatic pH adjustment, 71% of chlorobenzene was removed within 120 min with 10 mg L−1 Fe2+, and 2 g L−1 catalyst in pellet form (0.5% Pd, 10 mg L−1 of Pd) under 60 mA. The EF reaction can be achieved under flow, without external pH adjustment and H2O2 addition, and can be applied for in-situ groundwater treatment. Furthermore, the rotating PVDF-PAA membrane with immobilized Pd-catalyst showed an effective and low maintenance option for employing Pd catalyst for water treatment.",

keywords = "Chlorobenzene, Electro-Fenton's reaction, Groundwater remediation, Pd catalyst, Three-electrode flow system",

author = "Roya Nazari and Ljiljana Raji{\'c} and Ali Ciblak and Sebasti{\'a}n Hern{\'a}ndez and Mousa, {Ibrahim E.} and Wei Zhou and Dibakar Bhattacharyya and Alshawabkeh, {Akram N.}",

note = "Funding Information: This work was supported by the National Institute of Environmental Health Sciences (NIEHS, Grants No P42ES017198, Northeastern University, and P42ES007380, University of Kentucky). We appreciate the assistance in the different assays by Department of Civil & Environmental Engineering, Northeastern University; and the Chemical and Materials Engineering Department, University of Kentucky. Content is solely the responsibility of the authors and does not necessarily represent the official views of the NIEHS or the National Institutes of Health. Funding Information: This work was supported by the National Institute of Environmental Health Sciences ( NIEHS , Grants No P42ES017198 , Northeastern University , and P42ES007380 , University of Kentucky ). We appreciate the assistance in the different assays by Department of Civil & Environmental Engineering, Northeastern University; and the Chemical and Materials Engineering Department, University of Kentucky. Content is solely the responsibility of the authors and does not necessarily represent the official views of the NIEHS or the National Institutes of Health. Publisher Copyright: {\textcopyright} 2018 Elsevier Ltd",

year = "2019",

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doi = "10.1016/j.chemosphere.2018.10.143",

language = "English",

volume = "216",

pages = "556--563",

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T1 - Immobilized palladium-catalyzed electro-Fenton's degradation of chlorobenzene in groundwater

AU - Nazari, Roya

AU - Rajić, Ljiljana

AU - Ciblak, Ali

AU - Hernández, Sebastián

AU - Mousa, Ibrahim E.

AU - Zhou, Wei

AU - Bhattacharyya, Dibakar

AU - Alshawabkeh, Akram N.

N1 - Funding Information: This work was supported by the National Institute of Environmental Health Sciences (NIEHS, Grants No P42ES017198, Northeastern University, and P42ES007380, University of Kentucky). We appreciate the assistance in the different assays by Department of Civil & Environmental Engineering, Northeastern University; and the Chemical and Materials Engineering Department, University of Kentucky. Content is solely the responsibility of the authors and does not necessarily represent the official views of the NIEHS or the National Institutes of Health. Funding Information: This work was supported by the National Institute of Environmental Health Sciences ( NIEHS , Grants No P42ES017198 , Northeastern University , and P42ES007380 , University of Kentucky ). We appreciate the assistance in the different assays by Department of Civil & Environmental Engineering, Northeastern University; and the Chemical and Materials Engineering Department, University of Kentucky. Content is solely the responsibility of the authors and does not necessarily represent the official views of the NIEHS or the National Institutes of Health. Publisher Copyright: © 2018 Elsevier Ltd

PY - 2019/2

Y1 - 2019/2

N2 - This study investigates the effect of palladium (Pd) form on the electrochemical degradation of chlorobenzene in groundwater by palladium-catalyzed electro-Fenton (EF) reaction. In batch and flow-through column reactors, EF was initiated via in-situ electrochemical formation of hydrogen peroxide (H2O2) supported by Pd on alumina powder or by palladized polyacrylic acid (PAA) in a polyvinylidene fluoride (PVDF) membrane (Pd-PVDF/PAA). In a mixed batch reactor containing 10 mg L−1 Fe2+, 2 g L−1 of catalyst in powder form (1% Pd, 20 mg L−1 of Pd) and an initial pH of 3, chlorobenzene was degraded under 120 mA current following a first-order decay rate showing 96% removal within 60 min. Under the same conditions, a rotating Pd-PVDF/PAA disk produced 88% of chlorobenzene degradation. In the column experiment with automatic pH adjustment, 71% of chlorobenzene was removed within 120 min with 10 mg L−1 Fe2+, and 2 g L−1 catalyst in pellet form (0.5% Pd, 10 mg L−1 of Pd) under 60 mA. The EF reaction can be achieved under flow, without external pH adjustment and H2O2 addition, and can be applied for in-situ groundwater treatment. Furthermore, the rotating PVDF-PAA membrane with immobilized Pd-catalyst showed an effective and low maintenance option for employing Pd catalyst for water treatment.

AB - This study investigates the effect of palladium (Pd) form on the electrochemical degradation of chlorobenzene in groundwater by palladium-catalyzed electro-Fenton (EF) reaction. In batch and flow-through column reactors, EF was initiated via in-situ electrochemical formation of hydrogen peroxide (H2O2) supported by Pd on alumina powder or by palladized polyacrylic acid (PAA) in a polyvinylidene fluoride (PVDF) membrane (Pd-PVDF/PAA). In a mixed batch reactor containing 10 mg L−1 Fe2+, 2 g L−1 of catalyst in powder form (1% Pd, 20 mg L−1 of Pd) and an initial pH of 3, chlorobenzene was degraded under 120 mA current following a first-order decay rate showing 96% removal within 60 min. Under the same conditions, a rotating Pd-PVDF/PAA disk produced 88% of chlorobenzene degradation. In the column experiment with automatic pH adjustment, 71% of chlorobenzene was removed within 120 min with 10 mg L−1 Fe2+, and 2 g L−1 catalyst in pellet form (0.5% Pd, 10 mg L−1 of Pd) under 60 mA. The EF reaction can be achieved under flow, without external pH adjustment and H2O2 addition, and can be applied for in-situ groundwater treatment. Furthermore, the rotating PVDF-PAA membrane with immobilized Pd-catalyst showed an effective and low maintenance option for employing Pd catalyst for water treatment.

KW - Chlorobenzene

KW - Electro-Fenton's reaction

KW - Groundwater remediation

KW - Pd catalyst

KW - Three-electrode flow system

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DO - 10.1016/j.chemosphere.2018.10.143

M3 - Article

C2 - 30390586

AN - SCOPUS:85056156078

SN - 0045-6535

VL - 216

SP - 556

EP - 563

JO - Chemosphere

JF - Chemosphere

ER -

Immobilized palladium-catalyzed electro-Fenton's degradation of chlorobenzene in groundwater

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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