The removal of siloxanes (D4 and D5) and volatile organic contaminants (hexane, toluene and limonene) typically found in sewage biogas was investigated in a lab-scale biotrickling filter (BTF) packed with lava rock under anoxic conditions. Complete removal efficiencies for toluene and limonene were recorded at all empty bed residence time (EBRT) tested. The influence of EBRT was remarkable on the abatement of D5, whose removal decreased from 37% at 14.5 min to 16% at 4 min, while the removal of D4 and hexane remained below 16%. The packing material was supplemented with 20% of activated carbon aiming at increasing the mass transfer of the most hydrophobic pollutants. This strategy supported high removal efficiencies of 43 and 45% for hexane and D5 at the lowest EBRT. CO2 and silica were identified as mineralization products along with the presence of metabolites in the trickling solution such as dimethylsilanediol, 2-carene and α-terpinene
dc.description.sponsorship
This work was funded by the Spanish Ministry of Science, Innovation and
Universities (CTQ2014-53718-R) co-funded by FEDER and University of Girona. Eric
Santos-Clotas thanks Universitat de Girona for his predoctoral grant (IFUdG-2015/51).
Ellana Amparito Boada Cahueñas thanks SENESCYT – Ecuador for her predoctoral
grant. Alba Cabrera-Codony acknowledges support from the European Union’s Horizon
2020 research and innovation programme under the Marie Skłodowska-Curie grant
agreement Nº 712949 (TECNIOspring PLUS) and from the Agency for Business
Competitiveness of the Government of Catalonia (TECSPR16-1-0045). The support from
the regional government of Castilla y León and the EU-FEDER (CLU 2017-09) is also
acknowledged. LEQUIA and IEA have been recognized as consolidated research groups
by the Catalan Government (2017-SGR-1552 and 2017SGR-548, respectively)
dc.format.mimetype
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier
dc.relation
info:eu-repo/grantAgreement/MINECO//CTQ2014-53718-R/ES/TECNOLOGIAS INNOVADORAS PARA LA MEJORA DE BIOGAS: DESDE LA INVESTIGACION BASICA A LA EVALUACION DE TECNOLOGIAS/
dc.relation.isformatof
Versió postprint del document publicat a: https://doi.org/10.1016/j.biortech.2019.122136
Santos Clotas, Eric Cabrera Codony, Alba Boada Cahueñas, Ellana Gich Batlle, Frederic Muñoz, Raúl Martín, María José 2019 Efficient removal of siloxanes and volatile organic compounds from sewage biogas by an anoxic biotrickling filter supplemented with activated carbon Bioresource Technology 294 art.núm. 122136
Efficient removal of siloxanes and volatile organic compounds from sewage biogas by an anoxic biotrickling filter supplemented with activated carbon
dc.type
info:eu-repo/semantics/article
dc.rights.accessRights
info:eu-repo/semantics/openAccess
dc.embargo.terms
2021-12-01T00:00:00Z
dc.date.embargoEndDate
info:eu-repo/date/embargoEnd/2021-12-01
dc.relation.projectID
info:eu-repo/grantAgreement/EC/H2020/712949/EU/ACCIÓ programme to foster mobility of researchers with a focus in applied research and technology transfer/TECNIOspring PLUS
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