The Thermochemical Conversion of Municipal Solid Waste by Torrefaction Process

Ivanovski, Maja; Goričanec, Darko; Urbancl, Danijela

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Title:	The Thermochemical Conversion of Municipal Solid Waste by Torrefaction Process
Authors:	ID Ivanovski, Maja (Author) ID Goričanec, Darko (Author) ID Urbancl, Danijela (Author)
Files:	thermo-03-00017-v2.pdf (1,63 MB) MD5: E5C245A999E9B7E84ECB831C5F8208D8 https://www.mdpi.com/2673-7264/3/2/17
Language:	English
Work type:	Article
Typology:	1.01 - Original Scientific Article
Organization:	FKKT - Faculty of Chemistry and Chemical Engineering
Abstract:	In this work, the thermochemical properties of municipal solid waste (MSW) are studied using the torrefaction process as the main method for investigation. Torrefaction experiments were carried out using an electric laboratory furnace, at temperatures of 200, 250, and 300 °C. The residence time was set to 90 min. Proximate and ultimate analysis were performed on the torrefied MSW samples and compared with the properties of the raw MSW samples. In addition, the thermal properties of the obtained torrefied MSW samples were evaluated by thermogravimetric analysis (TGA) and derivative thermogravimetric analysis (DTG). The following could be stated: the obtained results showed that mass and energy yields (MY and EY, respectively) decrease with increasing when torrefaction temperature, while the heating values (HHV) increased under the same conditions (from 24.3 to 25.1 MJ/kg). Elemental analysis showed an increase in carbon content (C), from 45.7 ± 0.9 to 52.8 ± 1.05 wt.%, and decrease in oxygen content (O), from 45.6 ± 0.9 to 39.5 ± 0.8 wt.%, when torrefaction temperature is increased, which is consistent with the general definition of the torrefaction process. In addition, enhancement factors (EFs) and fuel ratios (FRs) were calculated, which ranged from 1.00 to 1.02 and 0.16 to 0.23, respectively. Some anomalies were observed during the thermal analysis, which are assumed to be related to the composition of the selected MSW. This study therefore shows that torrefaction pretreatment can improve the physicochemical properties of raw MSW to a level comparable to coal, and could contribute to a better understanding of the conversion of MSW into a valuable, solid biofuel.
Keywords:	biomass, municipal solid waste, torrefication, energy yield, thermogravimetric analysis
Publication status:	Published
Publication version:	Version of Record
Submitted for review:	20.03.2023
Article acceptance date:	12.05.2023
Publication date:	16.05.2023
Publisher:	MDPI AG
Year of publishing:	2023
Number of pages:	str. 277-288
Numbering:	iss. 2, Vol. 3
PID:	20.500.12556/DKUM-88562
UDC:	620.92/.98
ISSN on article:	2673-7264
COBISS.SI-ID:	152651779
DOI:	10.3390/thermo3020017
Publication date in DKUM:	10.05.2024
Views:	255
Downloads:	22
Metadata:
Categories:	Misc.
:	IVANOVSKI, Maja, GORIČANEC, Darko and URBANCL, Danijela, 2023, The Thermochemical Conversion of Municipal Solid Waste by Torrefaction Process. Thermo [online]. 2023. Vol. 2, no. 3, p. 277–288. [Accessed 25 April 2025]. DOI 10.3390/thermo3020017. Retrieved from: https://dk.um.si/IzpisGradiva.php?lang=eng&id=88562 Copy citation

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Record is a part of a journal

Title:	Thermo
Shortened title:	Thermo
Publisher:	MDPI AG
ISSN:	2673-7264
COBISS.SI-ID:	80674051

Licences

License:	CC BY 4.0, Creative Commons Attribution 4.0 International

Link:	http://creativecommons.org/licenses/by/4.0/
Description:	This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.

Secondary language

Language:	Slovenian
Keywords:	torefikacija, odpadki biomase, termogravimetrična analiza

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