Journal
BIOMASS & BIOENERGY
Volume 80, Issue -, Pages 278-285Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.biombioe.2015.06.004
Keywords
Wood pellets; Hydrophobic coatings; Water resistant; Biomass treatment
Funding
- Engineering and Physical Science Research Council (EPSRC) [EP/G037477/1]
- Biomass and Fossil Fuels Research Alliance (BF2RA)
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One of the key factors affecting the economic viability and safe deployment of wood pellet fired systems on a large scale is wood pellet stability. Wood pellets are extremely moisture unstable and present significant problems during the transportation, storage and handling stages of their lifetime. This study proposes an approach for creating moisture stable wood pellets through the addition of hydrophobic coatings. Pellets were treated with paraffin oil, castor oil, mineral oil and linseed oil and submerged in water for up to 1800 s. The strength of untreated pellets was found to decrease by around 94% after being submerged for 60 s, whereas no appreciable reduction in pellet strength was recorded after 1800 s in all of the oil treated cases. Treatment with oil was also found to reduce the formation of airborne fines and increase the energy density of wood pellets, increasing their HHV by up to 1.2 MJ kg(-1). (C) 2015 The Authors. Published by Elsevier Ltd.
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