Skip Navigation


Annals of Occupational Hygiene Advance Access originally published online on August 10, 2009
Annals of Occupational Hygiene 2009 53(8):797-805; doi:10.1093/annhyg/mep058
This Article
Right arrow Full Text
Right arrow Full Text (PDF)
Right arrow All Versions of this Article:
53/8/797    most recent
mep058v1
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Add to My Personal Archive
Right arrow Download to citation manager
Right arrowRequest Permissions
Google Scholar
Right arrow Articles by Arshadi, M.
Right arrow Articles by Fjällström, P.
PubMed
Right arrow PubMed Citation
Right arrow Articles by Arshadi, M.
Right arrow Articles by Fjällström, P.
Social Bookmarking
Add to CiteULike   Add to Connotea   Add to Del.icio.us  
What's this?


© The Author 2009. Published by Oxford University Press on behalf of the British Occupational Hygiene Society

Emission of Volatile Aldehydes and Ketones from Wood Pellets under Controlled Conditions

Mehrdad Arshadi1,*, Paul Geladi1, Rolf Gref2 and Pär Fjällström3

1 Unit of Biomass Technology and Chemistry, Swedish University of Agricultural Sciences, KBC-huset, SE-901 87 Umeå, Sweden
2 Department of Silviculture, Division of Forest Technology, Swedish University of Agricultural Sciences, SE-901 83 Umeå, Sweden
3 IVL Swedish Environmental Research Institute Ltd, PO Box 210 60, SE-100 31 Stockholm, Sweden

* Author to whom correspondence should be addressed. Tel: +46-0-90-786-87-73; fax: +46-0-90-786-87-99; e-mail: mehrdad.arshadi{at}btk.slu.se

Different qualities of biofuel pellets were made from pine and spruce sawdust according to an industrial experimental design. The fatty/resin acid compositions were determined by gas chromatography-mass spectrometry for both newly produced pellets and those after 2 and 4 weeks of storage. The aldehydes/ketones compositions were determined by high performance liquid chromatography at 0, 2, and 4 weeks. The designs were analyzed for the response variables: total fatty/resin acids and total aldehydes/ketones. The design showed a strong correlation between the pine fraction in the pellets and the fatty/resin acid content but the influence decreased over storage time. The amount of fatty/resin acids decreased ~40% during 4 weeks. The influence of drying temperature on the aldehyde/ketone emission of fresh pellets was also shown. The amounts of emitted aldehydes/ketones generally decreased by 45% during storage as a consequence of fatty/resin acid oxidation. The matrices of individual concentrations were subjected to multivariate data analysis. This showed clustering of the different experimental runs and demonstrated the important mechanism of fatty/resin acid conversion.

Keywords: aldehydes • fatty acids • industrial experimental design • multivariate data analysis • softwood pellets

Received March 10, 2009; in final form July 15, 2009


Add to CiteULike CiteULike   Add to Connotea Connotea   Add to Del.icio.us Del.icio.us    What's this?




Disclaimer: Please note that abstracts for content published before 1996 were created through digital scanning and may therefore not exactly replicate the text of the original print issues. All efforts have been made to ensure accuracy, but the Publisher will not be held responsible for any remaining inaccuracies. If you require any further clarification, please contact our Customer Services Department.