Chemical Engineering Transactions (Jun 2022)

Valorisation of Napier Grass and Agricultural Residues via Pyrolysis – a Kinetic Study

  • Hau-Huu Bui,
  • Khanh-Quang Tran,
  • Apanee Luengnaruemitchai,
  • Gulaim Seisenbaeva,
  • Salman Raza Naqvi,
  • Wei-Hsin Chen

DOI
https://doi.org/10.3303/CET2292029
Journal volume & issue
Vol. 92

Abstract

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Thermal pyrolysis of Thai Napier grass, cassava stalk and rice straw were studied thermogravimetrically, which was followed by a kinetic analysis assuming multiple kinetic schemes and a distributed activation energy model (DAEM) with reaction order n = 1 and n ? 1. The results showed that the DAEM described well the experimental data. The assumption of multiple kinetic schemes appeared more reasonable than that of similar studies reported in the literature assuming a single kinetic scheme. Consequently, the kinetic parameters extracted from the present study are more realistic and within reasonable ranges. Overall, the activation energies are within 31.6–223.53 kJ mol-1. The reaction orders are within 1.02–1.32 for the assumption of n ? 1.