Reaction of activated carbon zerovalent iron with pentachlorophenol under anaerobic conditions

Yangmin Ren; Junjun Ma; Yonghyeon Lee; Zhengchang Han; Mingcan Cui; Bin Wang; Mingce Long; Jeehyeong Khim

doi:10.1016/j.jclepro.2021.126748

Reaction of activated carbon zerovalent iron with pentachlorophenol under anaerobic conditions

Yangmin Ren, Junjun Ma, Yonghyeon Lee, Zhengchang Han, Mingcan Cui, Bin Wang, Mingce Long, Jeehyeong Khim

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

22 Citations (Scopus)

Abstract

Pentachlorophenol (PCP) is a toxic pollutant and often treated with zero-valent iron (ZVI) in groundwater. In order to improve the reaction rate and selectivity, activated carbon modified zero-valent iron to degrade PCP. This study investigated the effects of carbon loading on the structure, specific surface, and hydrophobicity of AC-ZVI. The results showed that water contact angle and specific surface, which determined hydrophobicity and adsorption capacity, account for the reactivity and selectivity of AC-ZVI during the reduction degradation of the contaminant PCP. The pseudo-first-order kinetic degradation rate of AC-ZVI is 7.44ⅹ10⁻² h⁻¹, and two times higher than for ZVI (3.21ⅹ10⁻² h⁻¹). Besides, as the [C/Fe]_measured weight ratio increased, the ratio of K_PCP/K_H2 increased from a minimum of 0.218% to a maximum of 0.533%. Based on the pathway of AC-ZVI and PCP, the reduction degradation mechanism of PCP was discussed. These findings can contribute to the rational design of AC-ZVI with properties tailored to a variety of halogenated organics in groundwater remediation.

Original language	English
Article number	126748
Journal	Journal of Cleaner Production
Volume	297
DOIs	https://doi.org/10.1016/j.jclepro.2021.126748
Publication status	Published - 2021 May 15

Bibliographical note

Funding Information:
Funding: This work was supported by the Korean Ministry of the Environment as a Subsurface Environment Management (SEM) project (No. 2019002480001 ) and the Nanjing Science and Technology Program - International Co-operation in Industrial Technology Research and Development (NSTP) project (No. 201911003 ).

Publisher Copyright:
© 2021

Keywords

57Fe Mössbauer spectra
Activated carbon-zero valent iron
Contact angles
Pentachlorophenol
Specific surface area

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment
General Environmental Science
Strategy and Management
Industrial and Manufacturing Engineering

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.jclepro.2021.126748

Cite this

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title = "Reaction of activated carbon zerovalent iron with pentachlorophenol under anaerobic conditions",

abstract = "Pentachlorophenol (PCP) is a toxic pollutant and often treated with zero-valent iron (ZVI) in groundwater. In order to improve the reaction rate and selectivity, activated carbon modified zero-valent iron to degrade PCP. This study investigated the effects of carbon loading on the structure, specific surface, and hydrophobicity of AC-ZVI. The results showed that water contact angle and specific surface, which determined hydrophobicity and adsorption capacity, account for the reactivity and selectivity of AC-ZVI during the reduction degradation of the contaminant PCP. The pseudo-first-order kinetic degradation rate of AC-ZVI is 7.44ⅹ10−2 h−1, and two times higher than for ZVI (3.21ⅹ10−2 h−1). Besides, as the [C/Fe]measured weight ratio increased, the ratio of KPCP/KH2 increased from a minimum of 0.218% to a maximum of 0.533%. Based on the pathway of AC-ZVI and PCP, the reduction degradation mechanism of PCP was discussed. These findings can contribute to the rational design of AC-ZVI with properties tailored to a variety of halogenated organics in groundwater remediation.",

keywords = "57Fe M{\"o}ssbauer spectra, Activated carbon-zero valent iron, Contact angles, Pentachlorophenol, Specific surface area",

author = "Yangmin Ren and Junjun Ma and Yonghyeon Lee and Zhengchang Han and Mingcan Cui and Bin Wang and Mingce Long and Jeehyeong Khim",

note = "Funding Information: Funding: This work was supported by the Korean Ministry of the Environment as a Subsurface Environment Management (SEM) project (No. 2019002480001 ) and the Nanjing Science and Technology Program - International Co-operation in Industrial Technology Research and Development (NSTP) project (No. 201911003 ). Publisher Copyright: {\textcopyright} 2021",

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doi = "10.1016/j.jclepro.2021.126748",

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AU - Ren, Yangmin

AU - Ma, Junjun

AU - Lee, Yonghyeon

AU - Han, Zhengchang

AU - Cui, Mingcan

AU - Wang, Bin

AU - Long, Mingce

AU - Khim, Jeehyeong

N1 - Funding Information: Funding: This work was supported by the Korean Ministry of the Environment as a Subsurface Environment Management (SEM) project (No. 2019002480001 ) and the Nanjing Science and Technology Program - International Co-operation in Industrial Technology Research and Development (NSTP) project (No. 201911003 ). Publisher Copyright: © 2021

PY - 2021/5/15

Y1 - 2021/5/15

N2 - Pentachlorophenol (PCP) is a toxic pollutant and often treated with zero-valent iron (ZVI) in groundwater. In order to improve the reaction rate and selectivity, activated carbon modified zero-valent iron to degrade PCP. This study investigated the effects of carbon loading on the structure, specific surface, and hydrophobicity of AC-ZVI. The results showed that water contact angle and specific surface, which determined hydrophobicity and adsorption capacity, account for the reactivity and selectivity of AC-ZVI during the reduction degradation of the contaminant PCP. The pseudo-first-order kinetic degradation rate of AC-ZVI is 7.44ⅹ10−2 h−1, and two times higher than for ZVI (3.21ⅹ10−2 h−1). Besides, as the [C/Fe]measured weight ratio increased, the ratio of KPCP/KH2 increased from a minimum of 0.218% to a maximum of 0.533%. Based on the pathway of AC-ZVI and PCP, the reduction degradation mechanism of PCP was discussed. These findings can contribute to the rational design of AC-ZVI with properties tailored to a variety of halogenated organics in groundwater remediation.

AB - Pentachlorophenol (PCP) is a toxic pollutant and often treated with zero-valent iron (ZVI) in groundwater. In order to improve the reaction rate and selectivity, activated carbon modified zero-valent iron to degrade PCP. This study investigated the effects of carbon loading on the structure, specific surface, and hydrophobicity of AC-ZVI. The results showed that water contact angle and specific surface, which determined hydrophobicity and adsorption capacity, account for the reactivity and selectivity of AC-ZVI during the reduction degradation of the contaminant PCP. The pseudo-first-order kinetic degradation rate of AC-ZVI is 7.44ⅹ10−2 h−1, and two times higher than for ZVI (3.21ⅹ10−2 h−1). Besides, as the [C/Fe]measured weight ratio increased, the ratio of KPCP/KH2 increased from a minimum of 0.218% to a maximum of 0.533%. Based on the pathway of AC-ZVI and PCP, the reduction degradation mechanism of PCP was discussed. These findings can contribute to the rational design of AC-ZVI with properties tailored to a variety of halogenated organics in groundwater remediation.

KW - 57Fe Mössbauer spectra

KW - Activated carbon-zero valent iron

KW - Contact angles

KW - Pentachlorophenol

KW - Specific surface area

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Reaction of activated carbon zerovalent iron with pentachlorophenol under anaerobic conditions

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

UN SDGs

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