Investigation of kinetic and thermodynamic parameters for pyrolysis of peanut shell using thermogravimetric analysis
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ORIGINAL ARTICLE
Investigation of kinetic and thermodynamic parameters for pyrolysis of peanut shell using thermogravimetric analysis Anil Kumar Varma 1 & Shweta Singh 1 & Ashwani Kumar Rathore 1 & Lokendra Singh Thakur 2 & Ravi Shankar 3 & Prasenjit Mondal 4 Received: 23 May 2020 / Revised: 27 July 2020 / Accepted: 19 August 2020 # Springer-Verlag GmbH Germany, part of Springer Nature 2020
Abstract The aim of the present study is to explore the thermal degradation behaviour and investigate the kinetic and thermodynamic parameters for pyrolysis of peanut shell (PS). Proximate, ultimate composition and calorific value of PS were employed to determine the energy potential of PS. Pyrolysis tests were performed in a thermogravimetric analyzer at heating rates of 10, 20 and 30 °C/min in inert (N2) atmosphere. Thermal analysis of PS confirms that the thermal degradation of PS occurred in three stages and major weight loss found in 200 to 600 °C. The pyrolysis kinetic parameters (activation energy and pre-exponential factor) and thermodynamic parameters (changes in enthalpy, Gibb’s free energy and entropy) were determined by Ozawa-FlynnWall (OFW), Kissinger, Kissinger-Akahira-Sunose (KAS) and Coats-Redfern methods. The value of activation energy (Ea) evaluated by the Kissinger method was 109.05 kJ/mol, while the average Ea calculated by OFW and KAS was 109.94 and 96.93 kJ/mol, respectively. Result showed that the Ea varies with the degree of conversion. The pre-exponential factors were obtained in the range of 2.99 × 1012–7 × 1013 min−1, increased with the rate of heating and decreased with conversion. The results of this study suggest that PS has potential to be used as a pyrolysis feedstock. Keywords Biomass . Peanut shell . Pyrolysis . Kinetic . Thermogravimetric analysis
1 Introduction Nowadays, the utilization of fossil fuels (petroleum, coal and natural gas) as energy source is increasing rapidly due to the growth in world population and industrialization. Currently, the world’s energy markets are heavily dependent on the fossil fuels with a share of 31.1, 28.9 and 21.4% by petroleum, coal and natural gas, respectively [1]. Moreover, consumption of these resources is creating various economic and environmental issues. To overcome these issues, researchers all over the * Anil Kumar Varma [email protected] 1
Department of Chemical Engineering, Harcourt Butler Technical University, Kanpur, Uttar Pradesh, India
2
Department of Chemical Engineering, Ujjain Engineering College, Ujjain, Madhya Pradesh, India
3
Department of Chemical Engineering, Madan Mohan Malviya University of Technology, Gorakhpur, Uttar Pradesh, India
4
Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, India
world are making efforts towards the other renewable resources which can be utilized as energy fuels [2]. Renewable resources are the alternative source of energy along with the advantage of renewability, sustainability and carbon neutral compared with fossil fuels, which fulfil around 1
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