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Fe(II)-based GDE electrodes for the demineralization of methylene blue dye

Fe(II)-based GDE electrodes for the demineralization of methylene blue dye
Fe(II)-based GDE electrodes for the demineralization of methylene blue dye

This paper describes the removal of methylene blue (MB) dye using [Fe(II)]-based gas diffusion electrodes (GDEs). GDEs were developed by rolling carbon black and polytetrafluoroethylene as a conductive layer for efficient oxygen reduction reaction, with an [Fe(II)] ink layer (5mgcm-2 loading) to conduct Fenton chemistry. The GDEs demonstrated the ability to remove the colour and mineralize MB dye in an undivided, three-electrode cell. Colour removal achieved 99% in a 150cm3 solution containing 100 ppm of MB dye at constant potential of - 1.0 V vs. Hg/HgSO 4 in 240 min. The kinetics of the MB decolouration showed pseudo-first-order batch kinetics. The results demonstrated that a GDE containing immobilized Fe(II) ions appears to be a viable option for the environmental remediation of organic dyes in wastewater by an anodic Fenton oxidation.

Demineralization, Electro-Fenton, Fe(II), Gas diffusion electrodes, Methylene blue dye
2193-567X
1-7
Zaidi, S.Z.J.
52ccc64d-89e9-4d44-afb0-29a131204907
Hurter, E.
9c705163-5fb2-429d-b649-fdac79ee2dc2
Walsh, F.C.
309528e7-062e-439b-af40-9309bc91efb2
Ponce de León, C.
508a312e-75ff-4bcb-9151-dacc424d755c
Zaidi, S.Z.J.
52ccc64d-89e9-4d44-afb0-29a131204907
Hurter, E.
9c705163-5fb2-429d-b649-fdac79ee2dc2
Walsh, F.C.
309528e7-062e-439b-af40-9309bc91efb2
Ponce de León, C.
508a312e-75ff-4bcb-9151-dacc424d755c

Zaidi, S.Z.J., Hurter, E., Walsh, F.C. and Ponce de León, C. (2019) Fe(II)-based GDE electrodes for the demineralization of methylene blue dye. Arabian Journal for Science and Engineering, 1-7. (doi:10.1007/s13369-019-03813-x).

Record type: Article

Abstract

This paper describes the removal of methylene blue (MB) dye using [Fe(II)]-based gas diffusion electrodes (GDEs). GDEs were developed by rolling carbon black and polytetrafluoroethylene as a conductive layer for efficient oxygen reduction reaction, with an [Fe(II)] ink layer (5mgcm-2 loading) to conduct Fenton chemistry. The GDEs demonstrated the ability to remove the colour and mineralize MB dye in an undivided, three-electrode cell. Colour removal achieved 99% in a 150cm3 solution containing 100 ppm of MB dye at constant potential of - 1.0 V vs. Hg/HgSO 4 in 240 min. The kinetics of the MB decolouration showed pseudo-first-order batch kinetics. The results demonstrated that a GDE containing immobilized Fe(II) ions appears to be a viable option for the environmental remediation of organic dyes in wastewater by an anodic Fenton oxidation.

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Zaidi 2019 Article FeII-Based GDE Electrodes - Version of Record
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Accepted/In Press date: 13 March 2019
e-pub ahead of print date: 5 April 2019
Keywords: Demineralization, Electro-Fenton, Fe(II), Gas diffusion electrodes, Methylene blue dye

Identifiers

Local EPrints ID: 430745
URI: http://eprints.soton.ac.uk/id/eprint/430745
ISSN: 2193-567X
PURE UUID: 2fe1cd83-0dac-4c15-a943-0659ce0d4f84
ORCID for C. Ponce de León: ORCID iD orcid.org/0000-0002-1907-5913

Catalogue record

Date deposited: 10 May 2019 16:30
Last modified: 15 Sep 2021 01:49

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Contributors

Author: S.Z.J. Zaidi
Author: E. Hurter
Author: F.C. Walsh

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