Open AccessActivation energy of domestic wastewater sludge in combustion process by using thermogravimetric analysis
Author(s) -
M. S. Zakaria,
Suhaimi Hassan,
M. Faizairi
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/863/1/012019
Subject(s) - thermogravimetric analysis , combustion , ignition system , materials science , activation energy , kinetic energy , autoignition temperature , biomass (ecology) , fossil fuel , environmental science , wastewater , waste management , chemical engineering , environmental engineering , thermodynamics , chemistry , geology , engineering , organic chemistry , physics , oceanography , quantum mechanics
The increasing demand of energy and environmental problem due to the consumption of fossil fuel has led the exploration of biomass fuel as an alternative energy. One of the potential biomass feedstocks that is available in Malaysia is Domestic Wastewater Sludge (DWS). In this study, DWS fuel characterization and the effect of experimental condition such as gaseous atmosphere, heating rate and particle size to the thermal behaviour of DWS has been carried out. In addition, kinetic parameter such as activation energy was determined by using the iso-conversional model free kinetic method, Flynn Wall Ozawa (FWO) model. Furthermore, lower heating rate and smaller particle size of DWS produced more volatile gas (84.51%), resulted to low ignition temperature (209°C) and low burnout temperature (515°C). Higher volatile indicates that it can accelerate the ignition process. In addition, low ignition temperature and low burnout temperature reveal that DWS can be ignited easily and shorten the time for combustion process. Based on the finding, the average activation energy for combustion of DWS which is about 143.86 kJ/mol.