DUGi

Regeneration of siloxane-exhausted activated carbon by advanced oxidation processes

http://dugi.udg.edu/item/http:@@@@hdl.handle.net@@10256@@11269

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

Elsevier