Reduction of chlorinated hydrocarbons using nano zero-valent
iron supported with an electric field. Characterization of
electrochemical processes and thermodynamic stability

J 2021

Reduction of chlorinated hydrocarbons using nano zero-valent iron supported with an electric field. Characterization of electrochemical processes and thermodynamic stability

PAVELKOVÁ, Alena; Vendula CENCEROVÁ; Josef ZEMAN; Vojtech ANTOS; Jaroslav NOSEK et. al.

Základní údaje

Originální název

Reduction of chlorinated hydrocarbons using nano zero-valent iron supported with an electric field. Characterization of electrochemical processes and thermodynamic stability

Autoři

PAVELKOVÁ, Alena; Vendula CENCEROVÁ; Josef ZEMAN (203 Česká republika, garant, domácí); Vojtech ANTOS a Jaroslav NOSEK

Vydání

Chemosphere, Oxford, Pergamon-Elsevier Science Ltd, 2021, 0045-6535

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10511 Environmental sciences

Stát vydavatele

Velká Británie a Severní Irsko

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 8.943

Kód RIV

RIV/00216224:14310/21:00120878

Organizační jednotka

Přírodovědecká fakulta

DOI

https://doi.org/10.1016/j.chemosphere.2020.128764

UT WoS

000603465000009

EID Scopus

2-s2.0-85095844699

Klíčová slova anglicky

Electro-reductive dechlorination; Remediation; Zero-valent iron; Chlorinated hydrocarbons

Štítky

rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 1. 2. 2021 13:27, Mgr. Marie Novosadová Šípková, DiS.

Anotace

V originále

Electric field assisted remediation using nano iron has shown outstanding results as well as economic benefits during pilot applications (Černíková et al., 2020). This method is based on donating electrons to the zero-valent iron that possess an inherently strong reductive capacity. The reduction of chlorinated hydrocarbons may be characterized by a decrease in contaminants or better still by the evolution of ethene and ethane originating from the reduction of chlorinated ethenes. The evolution of ethene and ethane was observed predominantly in the vicinity of the anode despite reduction processes being expected near the cathode – the electron donor. The reduction near the anode occurred due to dissolved Fe2+ ions, whose presence was suggested by a Pourbaix diagram that combines Eh/pH values to characterize electrochemical stabilities between different species. No products of dechlorination were observed in the area of the cathode due to presence of oxidized Fe in the form of Fe3+ or Fe(OH)4-. The experimental work described in this research provides a deeper view of the processes of electrochemical reductive dechlorination using zero-valent iron and DC. It also showed an increase in the efficiency compared to the method using zero-valent iron only.

Citovat

PAVELKOVÁ, Alena; Vendula CENCEROVÁ; Josef ZEMAN; Vojtech ANTOS a Jaroslav NOSEK. Reduction of chlorinated hydrocarbons using nano zero-valent iron supported with an electric field. Characterization of electrochemical processes and thermodynamic stability. Chemosphere. Oxford: Pergamon-Elsevier Science Ltd, 2021, roč. 265, February 2021, s. 128764-128772. ISSN 0045-6535. Dostupné z: https://doi.org/10.1016/j.chemosphere.2020.128764.

@article{1711600,
   author = {Pavelková, Alena and Cencerová, Vendula and Zeman, Josef and Antos, Vojtech and Nosek, Jaroslav},
   article_location = {Oxford},
   article_number = {February 2021},
   doi = {https://doi.org/10.1016/j.chemosphere.2020.128764},
   keywords = {Electro-reductive dechlorination; Remediation; Zero-valent iron; Chlorinated hydrocarbons},
   language = {eng},
   issn = {0045-6535},
   journal = {Chemosphere},
   title = {Reduction of chlorinated hydrocarbons using nano zero-valent iron supported with an electric field. Characterization of electrochemical processes and thermodynamic stability},
   url = {https://doi.org/10.1016/j.chemosphere.2020.128764},
   volume = {265},
   year = {2021}
}

TY  - JOUR
ID  - 1711600
AU  - Pavelková, Alena - Cencerová, Vendula - Zeman, Josef - Antos, Vojtech - Nosek, Jaroslav
PY  - 2021
TI  - Reduction of chlorinated hydrocarbons using nano zero-valent iron supported with an electric field. Characterization of electrochemical processes and thermodynamic stability
JF  - Chemosphere
VL  - 265
IS  - February 2021
SP  - 128764
EP  - 128764
PB  - Pergamon-Elsevier Science Ltd
SN  - 00456535
KW  - Electro-reductive dechlorination
KW  - Remediation
KW  - Zero-valent iron
KW  - Chlorinated hydrocarbons
UR  - https://doi.org/10.1016/j.chemosphere.2020.128764
L2  - https://doi.org/10.1016/j.chemosphere.2020.128764
N2  - Electric field assisted remediation using nano iron has shown outstanding results as well as economic benefits during pilot applications (Černíková et al., 2020). This method is based on donating electrons to the zero-valent iron that possess an inherently strong reductive capacity. The reduction of chlorinated hydrocarbons may be characterized by a decrease in contaminants or better still by the evolution of ethene and ethane originating from the reduction of chlorinated ethenes. The evolution of ethene and ethane was observed predominantly in the vicinity of the anode despite reduction processes being expected near the cathode – the electron donor. The reduction near the anode occurred due to dissolved Fe2+ ions, whose presence was suggested by a Pourbaix diagram that combines Eh/pH values to characterize electrochemical stabilities between different species. No products of dechlorination were observed in the area of the cathode due to presence of oxidized Fe in the form of Fe3+ or Fe(OH)4-. The experimental work described in this research provides a deeper view of the processes of electrochemical reductive dechlorination using zero-valent iron and DC. It also showed an increase in the efficiency compared to the method using zero-valent iron only.
ER  -

PAVELKOVÁ, Alena; Vendula CENCEROVÁ; Josef ZEMAN; Vojtech ANTOS a Jaroslav NOSEK. Reduction of chlorinated hydrocarbons using nano zero-valent iron supported with an electric field. Characterization of electrochemical processes and thermodynamic stability. \textit{Chemosphere}. Oxford: Pergamon-Elsevier Science Ltd, 2021, roč.~265, February 2021, s.~128764-128772. ISSN~0045-6535. Dostupné z: https://doi.org/10.1016/j.chemosphere.2020.128764.

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