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Regeneration of siloxane-exhausted activated carbon by advanced oxidation processes

In the context of the biogas upgrading, siloxane exhausted activated carbons need to be regenerated in order to avoid them becoming a residue. In this work, two commercial activate carbons which were proved to be efficient in the removal of octamethylcyclotetrasiloxane (D4) from biogas, have been regenerated through advanced oxidation processes using both O3 and H2O2.After the treatment with O3, the activated carbon recovered up to 40% of the original adsorption capacity while by the oxidation with H2O2 the regeneration efficiency achieved was up to 45%. In order to enhance the H2O2 oxidation, activated carbon was amended with iron. In this case, the regeneration efficiency increased up to 92%

This work was funded by Ministerio de Innovacion y Ciencia (MICINN) (SIRENA CTQ2011-24114). A. Cabrera-Codony thanks Generalitat de Catalunya DEC for her predoctoral grant (2013FI_B1 00054). R. Gonzalez-Olmos also wants to thank MICINN for his Juan de la Cierva fellowship (JCI-2010-07104). LEQUIA has been recognized as consolidated research group by the Catalan Government with code 2014-SGR-1168. Authors thank Gemma Rustullet for technical support

© Journal of Hazardous Materials, 2015, vol. 285, p. 501-508

Elsevier

Author: Cabrera-Codony, Alba
González Olmos, Rafael
Martín, María José
Date: 2015 March 1
Abstract: In the context of the biogas upgrading, siloxane exhausted activated carbons need to be regenerated in order to avoid them becoming a residue. In this work, two commercial activate carbons which were proved to be efficient in the removal of octamethylcyclotetrasiloxane (D4) from biogas, have been regenerated through advanced oxidation processes using both O3 and H2O2.After the treatment with O3, the activated carbon recovered up to 40% of the original adsorption capacity while by the oxidation with H2O2 the regeneration efficiency achieved was up to 45%. In order to enhance the H2O2 oxidation, activated carbon was amended with iron. In this case, the regeneration efficiency increased up to 92%
This work was funded by Ministerio de Innovacion y Ciencia (MICINN) (SIRENA CTQ2011-24114). A. Cabrera-Codony thanks Generalitat de Catalunya DEC for her predoctoral grant (2013FI_B1 00054). R. Gonzalez-Olmos also wants to thank MICINN for his Juan de la Cierva fellowship (JCI-2010-07104). LEQUIA has been recognized as consolidated research group by the Catalan Government with code 2014-SGR-1168. Authors thank Gemma Rustullet for technical support
Format: application/pdf
ISSN: 0304-3894 (versió paper)
1873-3336 (versió electrònica)
Document access: http://hdl.handle.net/10256/11269
Language: eng
Publisher: Elsevier
Collection: MICINN/PN 2012-2015/CTQ2011-24114
AGAUR/2013FI-B1 00054
Reproducció digital del document publicat a: http://dx.doi.org/10.1016/j.jhazmat.2014.11.053
Articles publicats (D-EQATA)
Is part of: © Journal of Hazardous Materials, 2015, vol. 285, p. 501-508
Rights: Tots els drets reservats
Subject: Carbó activat
Carbon, Activated
Biogàs
Biogas
Compostos orgànics volàtils
Volatile organic compounds
Aigües residuals -- Plantes de tractament
Sewage disposal plants
Title: Regeneration of siloxane-exhausted activated carbon by advanced oxidation processes
Type: info:eu-repo/semantics/article
Repository: DUGiDocs

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