Thermal conversion behavior of paper mill sludge: characterization, kinetic, and thermodynamic analyses


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Yaras A., Demirel B., Akkurt F., Arslanoglu H.

Biomass Conversion and Biorefinery, vol.13, no.3, pp.2007-2016, 2023 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 13 Issue: 3
  • Publication Date: 2023
  • Doi Number: 10.1007/s13399-020-01232-9
  • Journal Name: Biomass Conversion and Biorefinery
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Compendex, INSPEC
  • Page Numbers: pp.2007-2016
  • Keywords: Model-free kinetics, Paper mill sludge, Pyrolysis, Thermodynamic parameters, Thermogravimetric analysis
  • Erciyes University Affiliated: Yes

Abstract

© 2021, The Author(s), under exclusive licence to Springer-Verlag GmbH, DE part of Springer Nature.The present paper reports the pyrolysis behavior, kinetic, and thermodynamic parameters of paper mill sludge (PMS), which is a paper manufacturing residue and cannot be re-evaluated, at three heating rates (5, 10, and 20 °C min−1) under non-isothermal conditions. Ultimate and proximate analyses of the paper mill sludge were carried out. Kinetic and thermodynamic parameters were calculated using four model-free methods; Flynn-Wall Ozawa (FWO), Friedman, Kissinger-Akahira-Sunose (KAS), and distributed activation energy model (DAEM). High R2 values revealed that all models are compatible with TGA data. The activation energy calculated (101.01 kJ mol−1) from FWO was higher than the other three methods. Pre-exponential factor values ranged from 0.56 × 103 and 14.55 × 103 s−1 for all methods. Kinetic and thermodynamic findings will be beneficial in terms of the process design of PMS pyrolysis. Graphical abstract: [Figure not available: see fulltext.]