{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,25]],"date-time":"2026-01-25T12:23:37Z","timestamp":1769343817833,"version":"3.49.0"},"reference-count":33,"publisher":"MDPI AG","issue":"7","license":[{"start":{"date-parts":[[2023,3,28]],"date-time":"2023-03-28T00:00:00Z","timestamp":1679961600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100008530","name":"FEDER","doi-asserted-by":"publisher","award":["POCI-01-0247-FEDER-039838"],"award-info":[{"award-number":["POCI-01-0247-FEDER-039838"]}],"id":[{"id":"10.13039\/501100008530","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100008530","name":"FEDER","doi-asserted-by":"publisher","award":["UIDB\/04077\/2020"],"award-info":[{"award-number":["UIDB\/04077\/2020"]}],"id":[{"id":"10.13039\/501100008530","id-type":"DOI","asserted-by":"publisher"}]},{"name":"FCT","award":["POCI-01-0247-FEDER-039838"],"award-info":[{"award-number":["POCI-01-0247-FEDER-039838"]}]},{"name":"FCT","award":["UIDB\/04077\/2020"],"award-info":[{"award-number":["UIDB\/04077\/2020"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Energies"],"abstract":"<jats:p>Due to the energy crisis that some countries are facing nowadays, the gasification process appears to be a good alternative to produce some energy from solid materials. Increasingly, gasification involves using wastes as a solid fuel, making the process green and reusing some materials that otherwise could end up in a landfill. However, the process of finding the best gasification parameters of a sample can be very expensive and time-consuming. In this sense, a refuse-derived fuel (RDF) char produced from an original RDF under 30 min at 400 \u00b0C was tested on a small-scale reactor using macro thermogravimetric analysis (TGA), as presented in this paper. The goal was to study and evaluate the devolatilization and residual carbon rate of the sample under several conditions and, at the same time, quantify and analyze the released gas. In the first round of tests, 5, 10, and 20 g of samples were tested at 750 \u00b0C with an excess of air coefficient (\u03bb) = 0 and 0.2. It was possible to conclude that the lower the mass, the higher the devolatilization rate. The \u03bb only had an influence on the devolatilization rate with a 20 g sample. Regarding the gas, CO, CO2, and H2 had no variation in the sample mass in contrast to CH4, which increased with the increase in the sample mass. The second round of tests was performed with samples of 10 g of mass at temperatures of 700, 800, and 900 \u00b0C and \u03bb values of 0.15, 0.2, and 0.25. The tests indicated that the temperature influenced the devolatilization rate but not the residual carbon combustion rate. Regarding the gas composition, CH4, CO2, and CO followed the same trend, decreasing the concentration with the increase in temperature; in contrast, H2 increased in concentration with an increase in temperature. The heating value of the gas followed the same behavior as CH4.<\/jats:p>","DOI":"10.3390\/en16073064","type":"journal-article","created":{"date-parts":[[2023,3,28]],"date-time":"2023-03-28T01:41:34Z","timestamp":1679967694000},"page":"3064","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Influence of Temperature in the Thermo-Chemical Decomposition of Below-Stoichiometric RDF Char\u2014A Macro TGA Study"],"prefix":"10.3390","volume":"16","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-0983-2674","authenticated-orcid":false,"given":"Carlos","family":"Castro","sequence":"first","affiliation":[{"name":"MEtRICs, Mechanical Engineering and Resource Sustainability Center, Mechanical Engineering Department, School of Engineering, University of Minho, 4804-533 Guimar\u00e3es, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0940-519X","authenticated-orcid":false,"given":"Margarida","family":"Gon\u00e7alves","sequence":"additional","affiliation":[{"name":"MEtRICs, Mechanical Engineering and Resource Sustainability Center, Department of Science and Technology of Biomass, FCT-NOVA University of Lisbon, 2829-516 Caparica, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5734-7270","authenticated-orcid":false,"given":"Andrei","family":"Longo","sequence":"additional","affiliation":[{"name":"MEtRICs, Mechanical Engineering and Resource Sustainability Center, Department of Science and Technology of Biomass, FCT-NOVA University of Lisbon, 2829-516 Caparica, Portugal"}]},{"given":"C\u00e2ndida","family":"Vilarinho","sequence":"additional","affiliation":[{"name":"MEtRICs, Mechanical Engineering and Resource Sustainability Center, Mechanical Engineering Department, School of Engineering, University of Minho, 4804-533 Guimar\u00e3es, Portugal"},{"name":"CVR\u2014Center for Waste Valorization, University of Minho, 4800-058 Guimar\u00e3es, Portugal"}]},{"given":"Manuel","family":"Ferreira","sequence":"additional","affiliation":[{"name":"MEtRICs, Mechanical Engineering and Resource Sustainability Center, Mechanical Engineering Department, School of Engineering, University of Minho, 4804-533 Guimar\u00e3es, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5732-2527","authenticated-orcid":false,"given":"Andr\u00e9","family":"Ribeiro","sequence":"additional","affiliation":[{"name":"CVR\u2014Center for Waste Valorization, University of Minho, 4800-058 Guimar\u00e3es, Portugal"}]},{"given":"Nuno","family":"Pacheco","sequence":"additional","affiliation":[{"name":"CVR\u2014Center for Waste Valorization, University of Minho, 4800-058 Guimar\u00e3es, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8459-1837","authenticated-orcid":false,"given":"Jos\u00e9 C.","family":"Teixeira","sequence":"additional","affiliation":[{"name":"MEtRICs, Mechanical Engineering and Resource Sustainability Center, Mechanical Engineering Department, School of Engineering, University of Minho, 4804-533 Guimar\u00e3es, Portugal"}]}],"member":"1968","published-online":{"date-parts":[[2023,3,28]]},"reference":[{"key":"ref_1","first-page":"103","article-title":"Potential Plastic Waste Input from Citarum River, Indonesia","volume":"14","author":"Pamungkas","year":"2021","journal-title":"Aquac. Aquar. Conserv. Legis."},{"key":"ref_2","unstructured":"Statistics Canada (2022, December 26). Human Activity and the Environment-Sectoion 1: Introduction, Available online: https:\/\/www150.statcan.gc.ca\/n1\/pub\/16-201-x\/2012000\/part-partie1-eng.htm."},{"key":"ref_3","unstructured":"European Environmental Agency (2022, December 26). Reaching 2030\u2032s Residual Municipal Waste Target\u2014Why Recycling Is not Enough, Available online: https:\/\/www.eea.europa.eu\/publications\/reaching-2030s-residual-municipal-waste."},{"key":"ref_4","unstructured":"European Parliament (2022, December 26). Answer Given by Mr Sinkevi\u010dius on Behalf of the European Commission, Available online: https:\/\/www.europarl.europa.eu\/doceo\/document\/E-9-2020-006700-ASW_EN.html#ref1."},{"key":"ref_5","unstructured":"APA-Ag\u00eancia Portuguesa do Ambiente (2022, April 22). Relat\u00f3rio Anual Res\u00edduos Urbanos 2019, Available online: https:\/\/apambiente.pt\/sites\/default\/files\/_Residuos\/Producao_Gest\u00e3o_Residuos\/DadosRU\/RARU2019.pdf."},{"key":"ref_6","first-page":"1345","article-title":"Best available techniques in municipal solid waste incineration: State of the art in Spain and Portugal","volume":"29","author":"Margallo","year":"2012","journal-title":"Chem. Eng. Trans."},{"key":"ref_7","doi-asserted-by":"crossref","unstructured":"Basu, P. (2018). Biomass Gasification, Pyrolysis and Torrefaction-Pratical Design and Theory, Academic Press. [3rd ed.].","DOI":"10.1016\/B978-0-12-812992-0.00007-8"},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"1334","DOI":"10.1016\/j.wasman.2009.11.018","article-title":"An investigation on pollutant emissions from co-firing of RDF and coal","volume":"30","author":"Chyang","year":"2010","journal-title":"Waste Manag."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"121325","DOI":"10.1016\/j.biortech.2019.121325","article-title":"Torrefaction and carbonization of refuse derived fuel: Char characterization and evaluation of gaseous and liquid emissions","volume":"285","author":"Nobre","year":"2019","journal-title":"Bioresour. Technol."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"333","DOI":"10.1016\/j.biortech.2014.03.090","article-title":"Pretreatment of biomass by torrefaction and carbonization for coal blend used in pulverized coal injection","volume":"161","author":"Du","year":"2014","journal-title":"Bioresour. Technol."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"66","DOI":"10.1016\/j.energy.2019.05.105","article-title":"Upgrading of refuse derived fuel through torrefaction and carbonization: Evaluation of RDF char fuel properties","volume":"181","author":"Nobre","year":"2019","journal-title":"Energy"},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"26","DOI":"10.1016\/j.wasman.2014.11.010","article-title":"A review of technologies and performances of thermal treatment systems for energy recovery from waste","volume":"37","author":"Lombardi","year":"2015","journal-title":"Waste Manag."},{"key":"ref_13","unstructured":"Kirsanovs, V., \u017dandeckis, A., Blumberga, D., and Veidenbergs, I. (2014, January 15\u201319). The Influence of Process Temperature, Equivalence Ratio and Fuel Moisture Content on Gasification Process: A Review. Proceedings of the 27th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 2014): Proceedings, Finland, Turku."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"520","DOI":"10.1016\/j.egypro.2015.11.528","article-title":"Optimum Equivalence Ratio of Biomass Gasification Process Based on Thermodynamic Equilibrium Model","volume":"79","author":"Jangsawang","year":"2015","journal-title":"Energy Procedia"},{"key":"ref_15","first-page":"122232","article-title":"Investigation of steam gasification in thermogravimetric analysis by means of evolved gas analysis and machine learning","volume":"239","author":"Kartal","year":"2021","journal-title":"Energy"},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"136730","DOI":"10.1016\/j.cej.2022.136730","article-title":"A comprehensive review of thermogravimetric analysis (TGA) in lignocellulosic and algal biomass gasification","volume":"445","author":"Felix","year":"2022","journal-title":"Chem. Eng. J."},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"7505","DOI":"10.1021\/acs.iecr.1c00688","article-title":"Olive Waste Valorization Through TGA-MS Gasification: A Diatomaceous Earth Effect","volume":"60","year":"2021","journal-title":"Ind. Eng. Chem. Res."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"626","DOI":"10.1016\/j.jenvman.2018.12.087","article-title":"Macro-TGA steam-assisted gasification of lignocellulosic wastes","volume":"233","author":"Fernandez","year":"2018","journal-title":"J. Environ. Manag."},{"key":"ref_19","doi-asserted-by":"crossref","unstructured":"Wu, S., and Li, Z. (2022). Experimental and modeling study on centimeter pine char combustion in fast-heating Macro TGA. Proc. Combust. Inst.","DOI":"10.1016\/j.proci.2022.08.080"},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"105607","DOI":"10.1016\/j.jaap.2022.105607","article-title":"Torrefaction of low-value agro-industrial wastes using macro-TGA with GC-TCD\/FID analysis: Physicochemical characterization, kinetic investigation, and evolution of non-condensable gases","volume":"166","author":"Alves","year":"2022","journal-title":"J. Anal. Appl. Pyrolysis"},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"247","DOI":"10.1016\/j.wasman.2015.08.025","article-title":"Pyrolysis and gasification of typical components in wastes with macro-TGA","volume":"46","author":"Meng","year":"2015","journal-title":"Waste Manag."},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"106537","DOI":"10.1016\/j.biombioe.2022.106537","article-title":"Insight into the relationship between CO2 gasification characteristics and char structure of biomass","volume":"163","author":"Zhang","year":"2022","journal-title":"Biomass-Bioenergy"},{"key":"ref_23","doi-asserted-by":"crossref","unstructured":"Silva, J., Castro, C., Teixeira, S., and Teixeira, J. (2022). Evaluation of the Gas Emissions during the Thermochemical Conversion of Eucalyptus Woodchips. Processes, 10.","DOI":"10.3390\/pr10112413"},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"105747","DOI":"10.1016\/j.jaap.2022.105747","article-title":"Review on the preparation of high value-added carbon materials from biomass","volume":"168","author":"Ge","year":"2022","journal-title":"J. Anal. Appl. Pyrolysis"},{"key":"ref_25","unstructured":"Wortman, K. (2022, December 28). Polynomials in Two Variables. Available online: https:\/\/www.math.utah.edu\/~wortman\/1060text-pitv.pdf."},{"key":"ref_26","first-page":"73","article-title":"Oxidative pyrolysis of a large wood particle: Effects of oxygen concentration and of particle size","volume":"37","author":"Daouk","year":"2014","journal-title":"Chem. Eng. Trans."},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"7294","DOI":"10.1021\/acs.energyfuels.8b01678","article-title":"A Combined Overview of Combustion, Pyrolysis, and Gasification of Biomass","volume":"32","author":"Akhtar","year":"2018","journal-title":"Energy Fuels"},{"key":"ref_28","unstructured":"Yan, B., Zhang, L., Jin, Y., and Cheng, Y. (2023, January 02). Effect of Temperature Field on the Coal Devolatilization in a Millisecond Downer Reactor Recommended Citation. Available online: http:\/\/dc.engconfintl.org\/cfb10http:\/\/dc.engconfintl.org\/cfb10\/51."},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"239","DOI":"10.1016\/j.jaap.2011.06.004","article-title":"Experimental investigation of the effect of initial fuel particle shape, size and bed temperature on devolatilization of single wood particle in a hot fluidized bed","volume":"92","author":"Sudhakar","year":"2011","journal-title":"J. Anal. Appl. Pyrolysis"},{"key":"ref_30","doi-asserted-by":"crossref","first-page":"35","DOI":"10.1016\/j.joei.2014.02.004","article-title":"Effect of the type of gasifying agent on gas composition in a bubbling fluidized bed reactor","volume":"87","author":"Aydar","year":"2014","journal-title":"J. Energy Inst."},{"key":"ref_31","unstructured":"Cengel, Y.A., Boles, M.A., and Kano\u011flu, M. (2019). Thermodynamics an Engineering Approach, McGraw-hill. [9th ed.]."},{"key":"ref_32","doi-asserted-by":"crossref","first-page":"5212","DOI":"10.1016\/j.ijhydene.2018.08.037","article-title":"Influences of temperature arrangement on hydrogen production during two-stage gasification process","volume":"44","author":"Wu","year":"2018","journal-title":"Int. J. Hydrogen Energy"},{"key":"ref_33","doi-asserted-by":"crossref","first-page":"126431","DOI":"10.1016\/j.energy.2022.126431","article-title":"Combustion characteristics of liquid carbon dioxide-dried coal at different pressures of CO2\u2013O2 mixture","volume":"266","author":"Kim","year":"2023","journal-title":"Energy"}],"container-title":["Energies"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1996-1073\/16\/7\/3064\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,10]],"date-time":"2025-10-10T19:04:34Z","timestamp":1760123074000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1996-1073\/16\/7\/3064"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2023,3,28]]},"references-count":33,"journal-issue":{"issue":"7","published-online":{"date-parts":[[2023,4]]}},"alternative-id":["en16073064"],"URL":"https:\/\/doi.org\/10.3390\/en16073064","relation":{},"ISSN":["1996-1073"],"issn-type":[{"value":"1996-1073","type":"electronic"}],"subject":[],"published":{"date-parts":[[2023,3,28]]}}}