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Effect of concentrated NaCl on catalytic wet oxidation (CWO) of short chain carboxylic acids

Ou, Xiaoxia; Daly, Helen; Chansai, Sarayute; Beaumont, Simon; Fan, Xiaolei; Hardacre, Christopher

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Authors

Xiaoxia Ou

Helen Daly

Sarayute Chansai

Xiaolei Fan

Christopher Hardacre



Abstract

The effect of concentrated NaCl (200 g L−1) on CWO of oxalic acid and acetic acid over MnCeOx was investigated at 110 °C and 0.5 MPa O2 to explore the potential of using CWO for shale gas wastewater treatment. The presence of concentrated NaCl hindered oxalic acid conversion, which from ATR-IR spectroscopy was attributed to the salting out effect increasing the oxalic acid surface coverage with formation of strongly adsorbed intermediates, slowing oxalic acid mineralisation. In addition, the weak adsorption of acetic acid on MnCeOx was proposed to be responsible for the insignificant conversion with or without NaCl present.

Citation

Ou, X., Daly, H., Chansai, S., Beaumont, S., Fan, X., & Hardacre, C. (2022). Effect of concentrated NaCl on catalytic wet oxidation (CWO) of short chain carboxylic acids. Catalysis Communications, 162, https://doi.org/10.1016/j.catcom.2021.106395

Journal Article Type Article
Acceptance Date Dec 31, 2021
Online Publication Date Jan 4, 2022
Publication Date 2022-02
Deposit Date Jan 5, 2022
Publicly Available Date Jan 5, 2022
Journal Catalysis Communications
Print ISSN 1566-7367
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 162
DOI https://doi.org/10.1016/j.catcom.2021.106395

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Publisher Licence URL
http://creativecommons.org/licenses/by-nc-nd/4.0/

Copyright Statement
This article is available under the Creative Commons CC-BY-NC-ND license and permits non-commercial use of the work as published, without adaptation or alteration provided the work is fully attributed.





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