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Oladosu, K. O.
Department of Mechanical Engineering, Kwara State University, Malete, P.M.B 1530 Ilorin, Nigeria;Center for Sustainable Energy, Kwara State University, Malete, P.M.B 1530, Ilorin, Nigeria.
Adetunji, A. S.
Department of Mechanical Engineering, Ladoke Akintola University of Technology, P.M.B 4000, Ogbomoso, Oyo state, Nigeria.
Chukwwuweike, S. U.
Department of Mechanical Engineering, Kwara State University, Malete, P.M.B 1530 Ilorin, Nigeria.
Oderinde, J. O.
Department of Mechanical Engineering, Kwara State University, Malete, P.M.B 1530 Ilorin, Nigeria.
ABSTRACT
Pyrolysis stands out as an effective thermochemical
pathway for transforming biomass to biofuels. This study focused on the
optimization of bio oil and bio char production through pyrolysis of Terminalia
Catappa Pellets (TCP) using a fixed bed reactor. Box-Behnken Design (BBD) under
Response Surface Methodology of Design Expert software version 13.0 was
employed for the modelling and optimization of bio char and bio-oil yield at a
specified range of temperature (450 – 600 oC), holding time of (15 – 60 mins)
and particle size (0.5 – 2.0 mm) within an inert atmosphere fixed bed reactor.
The chemical properties of bio-oil were investigated using GC-MS. The maximum
bio-oil yield (52.50 %) and bio char (22.80 %) were observed at a temperature
of 525oC, holding time (15 mins) and 1.25 mm particle size. The GC-MS showed
that bio oil contained acetic acid, I-hydroxyl-2-proanone, and acetic
acid-methylester with the highest peak areas of oxygenated compounds. Further
processing of these chemicals could make it suitable for industrial
applications. The mathematical models for the bio-oil and bio-char through
pyrolysis using the BBD indicated a strong fit with coefficient of
determination (R2) values of 0.97 and 0.98 respectively. The prediction
accuracy suggests that BBD can be applied for prediction of biofuel through
pyrolysis of biomass pellets.
Keywords: Pyrolysis; Bio-oil; Terminalia Catappa Pellets; Fixed bed reactor; Box-Behnken Design.
https://doi.org/10.33922/j.ujet_v9i2_8
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Published
Monday, November 06, 2023
Issue
Vol.9 No.2, December 2023
Article Section
GENERAL
The contents of the articles are the sole opinion of the author(s) and not of UJET.
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