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Rheology and fuel properties of slurries of char and bio-oil derived from slow pyrolysis of cassava pulp residue and palm shell

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Abstract

Three bio-oil samples, namely, raw bio-oil from pyrolysis of cassava pulp residue (CPR), separated oil phase and aqueous phase of bio-oil from pyrolysis of palm shell (PS), were used as suspending media for preparing slurries of bio-oil and the co-product char. Rheologies of all tested slurries exhibited pseudoplasticity with yield stress and the degree of this non-Newtonian behavior depended on such parameters as slurry type, solid concentration, particle size and slurry temperature. Overall, char/bio-oil slurries gave better fuel properties including higher pH and reasonably high calorific value (18–32 MJ/kg) as compared to their bio-oil properties. Combustion of char/bio-oil slurries occurred in the temperature range similar to their solid char combustion and without ignition delay.

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Authors and Affiliations

  1. School of Chemical Engineering, Suranaree University of Technology, Muang District, Nakhon Ratchasima, 30000, Thailand

    Chaiyot Tangsathitkulchai & Piyarat Weerachanchai

  2. School of Chemistry, Suranaree University of Technology, Muang District, Nakhon Ratchasima, 30000, Thailand

    Malee Tangsathitkulchai

Authors
  1. Chaiyot Tangsathitkulchai
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  2. Piyarat Weerachanchai
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  3. Malee Tangsathitkulchai
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Correspondence to Chaiyot Tangsathitkulchai.

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Tangsathitkulchai, C., Weerachanchai, P. & Tangsathitkulchai, M. Rheology and fuel properties of slurries of char and bio-oil derived from slow pyrolysis of cassava pulp residue and palm shell. Korean J. Chem. Eng. 29, 1713–1721 (2012). https://doi.org/10.1007/s11814-012-0046-8

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  • DOI: https://doi.org/10.1007/s11814-012-0046-8

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