Universiti Teknologi Malaysia Institutional Repository

Kinetic modeling of LDPE pyrolysis using coats-Redfern method

Wong, S. L. and Ngadi, N. and Abdullah, T. A. T. (2015) Kinetic modeling of LDPE pyrolysis using coats-Redfern method. In: International Conference of Fuel Cell and Hydrogen Technology (ICFCHT2015), 1-3 Sept, 2015, Kuala Lumpur, Malaysia.

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Official URL: http://news.utm.my/2015/09/5th-international-confe...

Abstract

Pyrolysis of polymer waste can potentially be a source of renewable energy, as it is a possible way to produce liquid fuel. In order to industrialize the process, the kinetic behavior of the pyrolysis has to be well understood. In this study, pyrolysis of virgin low density polyethylene (LDPE) was studied using thermogravimetric analysis (TGA). The test was carried out from 303-923 K at 20K/min in a nitrogen atmosphere. The TGA result was used to develop suitable models to calculate the activation energy, E, and pre-exponential factor, A, using Coats-Redfern method. Proximate and elemental analysis was also carried out on the LDPE sample. It was discovered that all reaction models were able to produce satisfactory linear fit of the data, with high correlation coefficients. Therefore, Coats-Redfern method cannot be used alone, but must be coupled with other methods to determine the correct reaction mechanism for the pyrolysis. By assuming first-order reaction, the calculated activation energy and pre-exponential factor are 166.75 kJ/mol and 4.97 x 1011 s-1, respectively.

Item Type:Conference or Workshop Item (Paper)
Uncontrolled Keywords:kinetic modeling, thermogravimetric analysis (TGA)
Subjects:T Technology > TP Chemical technology
Divisions:Chemical Engineering
ID Code:63278
Deposited By: Fazli Masari
Deposited On:30 May 2017 02:50
Last Modified:30 May 2017 02:50

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