By Topic

Bio-oil production from the torrefied biomass

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$33 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

3 Author(s)
Onarin Khumsak ; The Joint Graduate School of Energy and Environment, CHE center for Energy Technology and Environment, King Mongkut's University of Technology Thonburi Bangkok, Thailand ; Weerapong Wattananoi ; Nakorn Worasuwannarak

Biomass is an important source of renewable energy which is derived from the living mechanism such as photosynthesis of plant due to the lower contents of sulfur and nitrogen in the biomass. Pyrolysis is a technology that can directly produce a liquid fuel from biomass which can be readily stored or transported. However, many researches have reported the negative properties of the bio-oils compare with the conventional fuel oil. The undesirable properties of the bio-oils included low heating value, low pH value, incompatibility with conventional fuels, high viscosity, and chemical instability. These undesirable properties of the bio-oils are mainly brought about by the high oxygen content in the biomass. On the other hand, it is known that the oxygen content in the biomass could be reduced by the torrefaction at the temperatures below 300°C. So, in this study we try to upgrade the biomass first by torrefaction at the temperatures below 300°C. It was found that the oxygen content of Leucaena leucocephala decreased from 46.2 wt% to 36.7 wt% when torrefy at 303°C whereas the torrefied lecaena yields decreased with the increase in torrefaction temperature. Then, the torrefied leucaena will be pyrolysed at 550°C to produce bio-oils. The bio-ols were fractionated into light oil and heavy oil fractions which were analyzed by GC-MS to examine the effect of fraction on the bio-oils properties. It was found that the acetic acid and furans were decreased in light oil fraction with the increase in torrefaction temperature. The pH value of bio-oils was slightly increased that was consistent with decreasing of acetic acid in light oil fraction. These results indicated that torrefaction process could improve bio-oils properties prior pyrolysis process.

Published in:

Clean Energy and Technology (CET), 2011 IEEE First Conference on

Date of Conference:

27-29 June 2011