Off-gassing reduction of stored wood pellets by adding acetylsalicylic acidVise andre og tillknytning
2020 (engelsk)Inngår i: Fuel processing technology, ISSN 0378-3820, E-ISSN 1873-7188, Vol. 198, artikkel-id 106218Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]
During transportation and storage of wood pellets various gases are formed leading to toxic atmosphere. Various influencing factors and measures reducing off-gassing have already been investigated. The present study aims at applying an antioxidant, acetylsalicylic acid (ASA), to reduce off-gassing from wood pellets by lowering wood extractives oxidation. Therefore, acetylsalicylic acid was applied in industrial and laboratory pelletizing processes. Pine and spruce sawdust (ratio 1:1) were pelletized with adding 0-0.8% (m/m) ASA. Glass flasks measurements confirmed off-gassing reduction by adding ASA for all wood pellets investigated.The biggest effect was achieved by adding 0.8% (m/m) ASA in the industrial pelletizing experiments where the emission of volatile organic compounds (VOCtot) was reduced by 82% and a reduction of carbon monoxide (CO) and carbon dioxide (CO2) emissions by 70% and 51%, respectively, could be achieved. Even an addition of 0.05% (m/m) ASA led to off-gassing reduction by >10%. A six week storage experiment to investigate the long-term effectivity of ASA addition revealed, that antioxidant addition was effective in reducing CO-, CO2- and VOCtot-release, especially during the first four weeks of the storage experiment, after which time the relative reduction effect was significantly decreased.
sted, utgiver, år, opplag, sider
Elsevier, 2020. Vol. 198, artikkel-id 106218
Emneord [en]
Antioxidant, Storage, Emission, Carbon monoxide, Volatile organic compounds, Aspirin
HSV kategori
Forskningsprogram
Energiteknik
Identifikatorer
URN: urn:nbn:se:ltu:diva-76608DOI: 10.1016/j.fuproc.2019.106218ISI: 000501613900003Scopus ID: 2-s2.0-85073827270OAI: oai:DiVA.org:ltu-76608DiVA, id: diva2:1367656
Merknad
Validerad;2019;Nivå 2;2019-11-04 (johcin)
2019-11-042019-11-042023-10-28bibliografisk kontrollert