Kinetic study of the thermal decomposition for mixed municipal solid waste using thermogravimetric analysis

Antony Mutua Nzioka, Alunda Benard Ouma, Odero Shirley Atieno


Thermal conversion of wastes is one of the perspective solution to ‘municipal solid waste’ problem. Thermal conversion process entails thermal decomposition of material with an increase in temperature. This experimental analysis investigated thermal decomposition of municipal solid waste using the thermogravimetric technique. The objective of the analysis was to analyze the changes in kinetic characteristics with changes in the composition of content in sample waste and temperature. Sample waste analyzed consisted of plant organic waste, paper, plastics, wood and inert substance. Proximate and elemental analyses were determined and calorific values determined experimentally using bomb calorimeter. Thermogravimetric curves were derived using thermogravimetric analyzer (TGA) at different temperature rates. Activation energy and pre¬exponential factor were derived using Flynn¬Wall¬Ozawa, Kissinger¬Akahira¬Sunose and Kissinger model equations. Additional statistical analyses of variance using ANOVA was conducted for the different sets of composition analyzed. Results showed kinetic parameter values for different model¬free models used in analysis as well as the level of variance in activation energies for different composition of waste and temperature rates used


Thermal decomposition; temperature; municipal solid waste; ANOVA; composition; activation energy

Full Text:



A. G. Troshin and A. M. Nzioka, “Method of processing unsorted municipal solid waste utilising heat energy from reciprocating grate cooler during the cooling process,” Ukraine Patent № 83321 C1, 2013.

L. B. Pavlovich, N. Y. Solovyova, E. D. Pavlovskaya, and V. M. Strakhov, “Using polymer waste in coke production,” Coke and Chemistry, vol. 59, pp. 287–295, Aug. 2016. doi: 10.3103/S1068364X16080068

K. Miezah, K. Obiri-Danso, Z. Kádár, S. Heiske, B. Fei-Baffoe, M. Mensah and A. S. Meyer, “Municipal Solid Waste Management in a Low Income Economy Through Biogas and Bioethanol Production,” Waste and Biomass Valorization, vol. 8, pp. 115–127, 2017. doi: 10.1007/s12649-016-9566-5

L. F. Diaz, G. M. Savage, L. L. Eggerth and L. Rosenberg, Solid waste management. Paris: Cal. Recovery Inc. and United Nations Environment Programme, 2005.

A. M. Nzioka, H. U. Hwang, M. G. Kim, C. Z. Yan, C. S. Lee, and Y. J. Kim, “Effect of storage conditions on the calorific value of municipal solid waste,” Waste Management and Research, "2017, in press".

E. L. Morton, L. Szabo, R. Nobis, and S. Alesi, “Method and apparatus for drying wet bio-solids using excess heat from a cement clinker cooler,” US Patent № 20050274067, 2008.

M. Kple, P. Girods, M. Anjorin, B. Fagla, and Y. Rogaume, “Thermal Degradation of Household Solid Waste in the Town of Abomey-Calavi in Benin: Kinetic Study,” Waste and Biomass Valorization, vol. 7, no. 1, pp. 59–70, Feb. 2016. doi: 10.1007/s12649-015-9441-9

D. Q. Zhang, P. J. He, and L. M. Shao, “Sorting efficiency and combustion properties of municipal solid waste during bio-drying,” Waste Management, vol. 29, pp. 2816–2823, 2009. doi: 10.1016/j.wasman.2009.06.024

F. Jiang, Z. Pan, S. Liu, and H. Wang, “Experimental studies on combustion characteristics of mixed municipal solid waste,” Journal of Thermal Science, vol. 12, pp. 367–370, Nov. 2003. doi: 10.1007/s11630-003-0046-4

A. M. Nzioka, M. G. Kim, H. U. Hwang, C. Z. Yan, V. E. Ved, V. P. Meshalkin and Y. J. Kim, “Experimental investigation on the drying of loosely-packed and heterogeneous municipal solid waste,” Theoretical Foundations of Chemical Engineering, vol. 50, pp. 414–421, Jul. 2016. doi: 10.1134/S0040579516040448

H. K. Rotich, Y. Zhao and J. Dong, “Municipal solid waste management challenges in developing countries – Kenyan case study,” Waste Management, vol. 26, pp. 92–100, 2006. doi: 10.1016/j.wasman.2005.03.007

G. A. Athanasopoulos, “Laboratory Testing of Municipal Solid Waste,” in International Symposium on Waste Mechanics "Geotechnical Characterization, Field Measurement, and Laboratory Testing of Municipal Solid Waste", 2008, pp. 195–205. doi: 10.1061/41146(395)7

R. B. Keey, Drying of loose and particulate materials. New York: Hemisphere, 1992.

ASTM E955 - 88(2009)e1 Standard Test Method for Thermal Characteristics of Refuse-Derived Fuel Macrosamples. .

G. V. Ilinykh, “Evaluation of MSW thermotechnical properties based on its composition,” PNRPU. Applied Ecology and Urban Development, vol. 3, pp. 125–137, 2013.

M. Heydari, M. Rahman, and R. Gupta, “Kinetic Study and Thermal Decomposition Behavior of Lignite Coal,” International Journal of Chemical Engineering, vol. 2015, pp. 1–9, 2015. doi: 10.1061/41146(395)7

N. A. V. Santos, Z. M. Magriotis, A. A. Saczk, G. T. A. Fássio, and S. S. Vieira, “Kinetic Study of Pyrolysis of Castor Beans ( Ricinus communis L.) Presscake: An Alternative use for Solid Waste Arising from the Biodiesel Production,” Energy & Fuels, vol. 29, pp. 2351–2357, Apr. 2015. doi: 10.1021/ef401933c

H. Hwang, M. Kim, A. Nzioka, Y. Kim, I. Tahir, and C. Yan, “Kinetic characteristics in pyrolysis of RPF with additives,” Journal of Wuhan University of Technology, Material Science Edition, vol. 31, pp. 1144–1148, 2016. doi: 10.1007/s11595-016-1503-8

L. L. Baxter, T. R. Miles, T. R. Miles Jr., B. M. Jenkins, T. Milne, D. Dayton, R. W. Bryers and L. L. Oden, “The behavior of inorganic material in biomass-fired power boilers: field and laboratory experiences,” Fuel Processing Technology, vol. 54, pp. 47–78, 1998.



  • There are currently no refbacks.

Copyright (c) 2017 Periodicals of Engineering and Natural Sciences (PEN)

Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.

ISSN: 2303-4521

Digital Object Identifier DOI: 10.21533/pen

Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License