Adsorption of volatile sulphur compounds onto modified activated carbons: effect of oxygen functional groups
dc.contributor.author
dc.date.accessioned
2015-10-14T10:06:02Z
dc.date.available
2015-10-14T10:06:02Z
dc.date.issued
2013-05-04
dc.identifier.issn
0304-3894
dc.identifier.uri
dc.description.abstract
The effect of physical and chemical properties of activated carbon (AC) on the adsorption of ethyl mercaptan, dimethyl sulphide and dimethyl disulphide was investigated by treating a commercial AC with nitric acid and ozone. The chemical properties of ACs were characterised by temperature programme desorption and X-ray photoelectron spectroscopy. AC treated with nitric acid presented a larger amount of oxygen functional groups than materials oxidised with ozone. This enrichment allowed a significant improvement on adsorption capacities for ethyl mercaptan and dimethyl sulphide but not for dimethyl disulphide. In order to gain a deeper knowledge on the effect of the surface chemistry of AC on the adsorption of volatile sulphur compounds, the quantum-chemical COSMO-RS method was used to simulate the interactions between AC surface groups and the studied volatile sulphur compounds. In agreement with experimental data, this model predicted a greater affinity of dimethyl disulphide towards AC, unaffected by the incorporation of oxygen functional groups in the surface. Moreover, the model pointed out to an increase of the adsorption capacity of AC by the incorporation of hydroxyl functional groups in the case of ethyl mercaptan and dimethyl sulphide due to the hydrogen bond interactions
dc.description.sponsorship
R. Gonzalez Olmos thanks MICINN for the Juan de la Cierva fellowship (JCI-2010-07104). We also greatly appreciate financial support from the Spanish "Ministerio de Ciencia e Innovacion (MICINN)" and "Comunidad de Madrid" (projects PET2008_0261, CTQ2011-24114, CTQ2011-26758, CTQ2009-09983 and S2009/PPQ-1545) and "Centro de Computacion Cientifica de la Universidad Autonoma de Madrid" for computational facilities
dc.format.mimetype
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier
dc.relation
info:eu-repo/grantAgreement/MICINN//CTQ2011-24114/ES/ELIMINACION DE SILOXANOS EN LA RECUPERACION ENERGETICA DE BIOGAS DE DEPURADORA: ADSORCION Y REGENERACION MEDIANTE PROCESOS DE OXIDACION AVANZADA/
info:eu-repo/grantAgreement/MICINN//PET2008_0261/ES/Generación de olores en secadores de lodos de depuradora tipo túnel y su tratamiento final por ciclos de adsorción%2Fregeneración en carbón activado./
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Reproducció digital del document publicat a: http://dx.doi.org/10.1016/j.jhazmat.2013.04.043
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© Journal of Hazardous Materials, 2013, vol. 258-259, p. 77-83
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Articles publicats (D-EQATA)
dc.rights
Tots els drets reservats
dc.subject
dc.title
Adsorption of volatile sulphur compounds onto modified activated carbons: effect of oxygen functional groups
dc.type
info:eu-repo/semantics/article
dc.rights.accessRights
info:eu-repo/semantics/embargoedAccess
dc.embargo.terms
Cap
dc.date.embargoEndDate
info:eu-repo/date/embargoEnd/2026-01-01
dc.type.version
info:eu-repo/semantics/publishedVersion
dc.identifier.doi
dc.identifier.idgrec
017004
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dc.relation.ProjectAcronym
dc.identifier.eissn
1873-3336