Determination of thermal degradation behavior and kinetics parameters of chemically modified sun hemp biomass

Manish Choudhary; Sandesh Kumar Jain; Dhananjay Singh; Keerti Srivastava; Anil K Patel; Jürgen Mahlknecht; Balendu Shekher Giri; Manish Kumar

doi:10.1016/j.biortech.2023.129065

Determination of thermal degradation behavior and kinetics parameters of chemically modified sun hemp biomass

Bioresour Technol. 2023 Jul:380:129065. doi: 10.1016/j.biortech.2023.129065. Epub 2023 Apr 18.

Authors

Manish Choudhary¹, Sandesh Kumar Jain², Dhananjay Singh³, Keerti Srivastava⁴, Anil K Patel⁵, Jürgen Mahlknecht⁶, Balendu Shekher Giri⁷, Manish Kumar⁸

Affiliations

¹ Department of Plastics Engineering, Central Institute of Petrochemical Engineering & Technology, Lucknow 226008, Uttar Pradesh, India.
² Centre for Skilling and Technical Support, Central Institute of Petrochemical Engineering & Technology, Bhopal462 023, Madhya Pradesh, India.
³ Department of Chemical Engineering, Institute of Engineering &Technology, Lucknow 226023, Uttar Pradesh, India.
⁴ Department of Applied Sciences, Central Institute of Petrochemical Engineering & Technology, Lucknow 226008, Uttar Pradesh, India.
⁵ Department of Marine Environmental Engineering, NKUST, Kaohsiung City 81157, Taiwan.
⁶ Escuela de Ingenieria y Ciencias, Tecnologico de Monterrey, Campus Monterey, Monterey, 64849, Nuevo Leon, Mexico.
⁷ Sustainability Cluster, University of Petroleum and Energy Studies (UPES), Dehradun - 248007, Uttarakhand, India. Electronic address: balendushekher23@gmail.com.
⁸ Escuela de Ingenieria y Ciencias, Tecnologico de Monterrey, Campus Monterey, Monterey, 64849, Nuevo Leon, Mexico; Sustainability Cluster, University of Petroleum and Energy Studies (UPES), Dehradun - 248007, Uttarakhand, India.

PMID: 37080440
DOI: 10.1016/j.biortech.2023.129065

Abstract

Sun hemp fibers are natural fibers obtained from plants grown in India and nearby countries. It is lignocellulosic biomass having the complex structure of hemicelluloses, cellulose and lignin. Chemical treatment of natural fibers is in practice to enhance the properties being used as reinforcement. Alkaline-treated fiber was sampled and thermal stability along with kinetic parameters was assessed with thermo gravimetric data at heating rates 10, 20 and 30 °C/min using four model-free methods Kissinger-Akahira-Sunose (KAS), Flynn-Wall-Ozawa (FWO), Friedman (FM), Starink (STAR) along with Distributed activation energy model (DAEM) to calculate pre-exponential factor. The calculated activation energy E_a by these model-free methods were in the range of 93.3-104.8 kJ/mol and pre-exponential factor (A) was observed between the range 46.6 x10³-90.5 x10⁶/min by the DAEM method. The standard deviation (σ) calculated from average activation energy using all four methods was 4.5 kJ/mol, which showed the consistency in the methods employed to determine the activation energy of sun hemp.

Keywords: Activation energy; Natural fiber; Thermal decomposition; Thermogravimetric analysis.

MeSH terms

Biomass
Cannabis*
Cellulose
Kinetics
Lignin
Physics
Thermogravimetry

Substances

Cellulose
Lignin