Abstract
Stock piling of used tyres in the landfill is a problematic issue all around the world. The bridging of ecology and energy can be done through the waste tyres. Direct combustion, pyrolysis and gasification are technologies available to reduce the rubber waste disposed at Mare Chicose and at the same time, relieve the energy crisis. The government wants to implement a gasification plant at La Chaumiere and a foreign investor wants to invest in a pyrolysis plant near Mare Chicose. This will benefit the country by a large extent. Our importation of fossil fuel will decrease and the country will save in terms of currency. To tackle this problem in Mauritius, three methods are chosen: Direct combustion, pyrolysis and gasification. It was observed that direct combustion will increase the CO2 emission by 26% if shredded waste tyres as a replacement for coal. Pyrolysis gave 35% of char 33% of heavy pyrolytic oil, 17% of light pyrolytic oil and 15% of gas by mass percent. The GCV of the char was 30.64 MJ/kg and that of heavy pyrolytic oil was 42.69 MJ/kg while light pyrolytic oil was 41.92 MJ/kg. The char can be compared with a good quality coal which has a GCV of 30–33 MJ/kg and the pyrolytic oil was compared with commercial diesel having a GCV of 46.0 MJ/kg. Gasification, however, was not chosen as the best Waste-to-Energy (WTE) conversion technology due to its high temperature which increases the cost of operation.
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Acknowledgements
The achievement of this paper was completed under guidance, reinforcement and kindness of many persons that have to be mentioned and received appreciation. I owe my deepest gratitude to the head of Chemical Engineering Department of the University of Mauritius, Dr. D. Surroop for allowing me to use his design concept of pyrolytic reactor. Dr. P. Jeetah for her supervision, advice and guidance from the very early stage of this project. Last but not least, I extend my warmest thanks to the laboratory staffs of the chemical engineering department.
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Rekhaye, A., Jeetah, P. (2018). Assessing Energy Potential from Waste Tyres in Mauritius by Direct Combustion, Pyrolysis and Gasification. In: Leal Filho, W., Surroop, D. (eds) The Nexus: Energy, Environment and Climate Change. Green Energy and Technology. Springer, Cham. https://doi.org/10.1007/978-3-319-63612-2_7
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DOI: https://doi.org/10.1007/978-3-319-63612-2_7
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