Effect of heat treatment on equilibrium moisture content of Southern pine

Manunya Phanphanich, Tyler Westover

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Lowering of equilibrium moisture content is a significant benefit of thermal treatment of biomass. In this study, the equilibrium moisture content (EMC) of base-line and heat treated Southern pine wood (180, 230, and 270°C) was measured as a function of relative humidity over the range 22 to 85% at room temperature using a static gravimetric method (saturated salt slurry). Materials were prepared using a continuous-feed thermal reactor (capacity of 25 kg feed/hour). Six EMC models and their estimated parameters were evaluated for goodness-of-fit under the above range of conditions. Changes in wood composition as a function of thermal treatment temperature were investigated by the method of sequential detergent. EMC of wood increased with increase of relative humidity and decreased with increasing thermal treatment temperature. Degradation of hemicellulose and reduction of accessible hydroxyl groups from the heat treatment caused a decrease the ability of sample wood to bond with water.

Original languageEnglish
Title of host publicationAmerican Society of Agricultural and Biological Engineers Annual International Meeting 2013, ASABE 2013
PublisherAmerican Society of Agricultural and Biological Engineers
Pages1515-1522
Number of pages8
ISBN (Print)9781627486651
StatePublished - 2013
EventAmerican Society of Agricultural and Biological Engineers Annual International Meeting 2013 - Kansas City, MO, United States
Duration: Jul 21 2013Jul 24 2013

Publication series

NameAmerican Society of Agricultural and Biological Engineers Annual International Meeting 2013, ASABE 2013
Volume2

Conference

ConferenceAmerican Society of Agricultural and Biological Engineers Annual International Meeting 2013
Country/TerritoryUnited States
CityKansas City, MO
Period07/21/1307/24/13

Keywords

  • Biomass
  • Equilibrium moisture content
  • Heat treatment
  • Hygroscopicity
  • Stability
  • Storage
  • Torrefaction
  • Wood

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