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Characterisation and treatment of VOCs in process water from upgrading facilities for compressed biogas (CBG)
Tekniska verken i Linköping AB, Sweden.
RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Kemi Material och Ytor, Kemi.ORCID-id: 0000-0002-4037-3106
Tekniska verken i Linköping AB, Sweden.
RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Kemi Material och Ytor.ORCID-id: 0000-0001-6496-0586
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2016 (Engelska)Ingår i: Chemosphere, ISSN 0045-6535, E-ISSN 1879-1298, Vol. 145, s. 424-430Artikel i tidskrift (Refereegranskat) Published
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Abstract [en]

Compression and upgrading of biogas to vehicle fuel generates process water, which to varying degrees contains volatile organic compounds (VOCs) originating from the biogas. The compostion of this process water has not yet been studied and scientifically published and there is currently an uncertainty regarding content of VOCs and how the process water should be managed to minimise the impact on health and the environment. The aim of the study was to give an overview about general levels of VOCs in the process water. Characterisation of process water from amine and water scrubbers at plants digesting waste, sewage sludge or agricultural residues showed that both the average concentration and composition of particular VOCs varied depending on the substrate used at the biogas plant, but the divergence was high and the differences for total concentrations from the different substrate groups were only significant for samples from plants using waste compared to residues from agriculture. The characterisation also showed that the content of VOCs varied greatly between different sampling points for same main substrate and between sampling occasions at the same sampling point, indicating that site-specific conditions are important for the results which also indicates that a number of analyses at different times are required in order to make an more exact characterisation with low uncertainty.Inhibition of VOCs in the anaerobic digestion (AD) process was studied in biomethane potential tests, but no inhibition was observed during addition of synthetic process water at concentrations of 11.6 mg and 238 mg VOC/L.

Ort, förlag, år, upplaga, sidor
Elsevier, 2016. Vol. 145, s. 424-430
Nyckelord [en]
Amine scrubber, Compressed biogas, Inhibition, Process water, VOCs, Water scrubber
Nationell ämneskategori
Vattenteknik Analytisk kemi
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URN: urn:nbn:se:ri:diva-92DOI: 10.1016/j.chemosphere.2015.11.083Scopus ID: 2-s2.0-84960153333OAI: oai:DiVA.org:ri-92DiVA, id: diva2:930621
Tillgänglig från: 2016-05-24 Skapad: 2016-04-28 Senast uppdaterad: 2024-03-22Bibliografiskt granskad

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Arrhenius, KarineEngelbrektsson, Johan

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Chemosphere
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