Kinetics and thermodynamic analysis in one-pot pyrolysis of rice hull using renewable calcium oxide based catalysts

Gan DKW 1 , Loy ACM 2 , Chin BLF 3 , Yusup S 2 , Unrean P 4 , Rianawati E 5 Show all authors , Acda MN 6

Affiliations 

  • 1 Department of Chemical Engineering, Faculty of Engineering and Science, Curtin University Malaysia, CDT 250, 98009 Miri Sarawak, Malaysia
  • 2 Biomass Processing Lab, Centre for Biofuel and Biochemical Research, Institute of Sustainable Living, Universiti Teknologi PETRONAS, Bandar Seri Iskandar, Tronoh 31750, Malaysia; Department of Chemical Engineering, Universiti Teknologi PETRONAS, Bandar Seri Iskandar, Tronoh 31750, Malaysia
  • 3 Department of Chemical Engineering, Faculty of Engineering and Science, Curtin University Malaysia, CDT 250, 98009 Miri Sarawak, Malaysia. Electronic address: [email protected]
  • 4 National Center for Genetic Engineering and Biotechnology (BIOTEC), 113 Thailand Science Park Paholyothin Road, Klong 1, Klong Luang, Pathumthani 12120, Thailand
  • 5 Resilience Development Initiative, Jl. Imperial Imperial 2, No. 52, Bandung 40135, Indonesia
  • 6 College of Forest Products and Paper Science, University of the Philippines Los Baños, College, Laguna 4031, Philippines
Bioresour Technol, 2018 Oct;265:180-190.
PMID: 29894912 DOI: 10.1016/j.biortech.2018.06.003

Abstract

Thermodynamic and kinetic parameters of catalytic pyrolysis of rice hull (RH) pyrolysis using two different types of renewable catalysts namely natural limestone (LS) and eggshells (ES) using thermogravimetric analysis (TG) approach at different heating rates of 10-100 K min-1 in temperature range of 323-1173 K are investigated. Catalytic pyrolysis mechanism of both catalysts had shown significant effect on the degradation of RH. Model free kinetic of iso-conversional method (Flynn-Wall-Ozawa) and multi-step reaction model (Distributed Activation Energy Model) were employed into present study. The average activation energy was found in the range of 175.4-177.7 kJ mol-1 (RH), 123.3-132.5 kJ mol-1 (RH-LS), and 96.1-100.4 kJ mol-1 (RH-ES) respectively. The syngas composition had increased from 60.05 wt% to 63.1 wt% (RH-LS) and 63.4 wt% (RH-ES). However, the CO2 content had decreased from 24.1 wt% (RH) to 20.8 wt% (RH-LS) and 19.9 wt% (RH-ES).

* Title and MeSH Headings from MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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