{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,21]],"date-time":"2026-04-21T12:42:45Z","timestamp":1776775365175,"version":"3.51.2"},"reference-count":57,"publisher":"MDPI AG","issue":"11","license":[{"start":{"date-parts":[[2020,6,1]],"date-time":"2020-06-01T00:00:00Z","timestamp":1590969600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Portuguese Foundation for Science and Technology","award":["UIDB\/00319\/2020"],"award-info":[{"award-number":["UIDB\/00319\/2020"]}]},{"name":"Portuguese Foundation for Science and Technology","award":["UIDP\/04077\/2020"],"award-info":[{"award-number":["UIDP\/04077\/2020"]}]},{"name":"Portuguese Foundation for Science and Technology","award":["UIDB\/04436\/2020"],"award-info":[{"award-number":["UIDB\/04436\/2020"]}]},{"name":"Portuguese Foundation for Science and Technology","award":["SFRH\/BD\/130588\/2017"],"award-info":[{"award-number":["SFRH\/BD\/130588\/2017"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Energies"],"abstract":"<jats:p>Although there are many studies available in literature about biomass pyrolysis or devolatilization using thermogravimetric analysis (TGA), the effects of important operating parameters have infrequently been investigated for pine wood particle combustion. Consequently, the present study investigates the influence of particle size (63 \u00b5m to 1 mm), heating rate (5 to 243 \u00b0C\/min), and air flow rate (10 to 150 mL\/min) on the mass loss of pine wood using TGA. Additionally, the kinetic parameters considering the different conditions were determined to be incorporated in a numerical model. The effect of the heating rate on the thermal decomposition behavior has shown that the thermogravimetric and derivative thermogravimetric curves were shifted to higher temperatures with the increase in the heating rate. In this way, the heating rate affects the temperature at which the highest mass loss rate occurs as well as its value. Furthermore, comparing the higher and lower heating rate, the time to complete the combustion and the release are around 22 times higher when a higher heating rate is applied. On the other hand, the effects of four different air flow rates were compared and similar results were obtained. Regarding the kinetic analysis, it was verified at various heating and air flow rates with different particle sizes that the highest activation energy was mostly obtained during char combustion (~131\u2013229 kJ\/mol). Furthermore, in the second stage higher heating rates had the highest reactivity, and in the third stage there were not too many changes. In terms of the effect of air flow rates, a maximum variation of 15 kJ\/mol was obtained in the third stage and, therefore, no significant effect on the reactivity for all particles was found.<\/jats:p>","DOI":"10.3390\/en13112756","type":"journal-article","created":{"date-parts":[[2020,6,2]],"date-time":"2020-06-02T04:09:03Z","timestamp":1591070943000},"page":"2756","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":33,"title":["Influence of Operating Conditions on the Thermal Behavior and Kinetics of Pine Wood Particles Using Thermogravimetric Analysis"],"prefix":"10.3390","volume":"13","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-2276-0153","authenticated-orcid":false,"given":"Lelis Gonzaga","family":"Fraga","sequence":"first","affiliation":[{"name":"Department of Mechanical Engineering, Faculty of Engineering, Science and Technology, Universidade Nacional Timor Lorosa\u2019e, D\u00edli PO.Box 317, Timor-Leste"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3518-7111","authenticated-orcid":false,"given":"Jo\u00e3o","family":"Silva","sequence":"additional","affiliation":[{"name":"MEtRICs Research Centre, University of Minho, 4800-058 Guimar\u00e3es, Portugal"},{"name":"ALGORITMI Research Centre, University of Minho, 4800-058 Guimar\u00e3es, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7464-3944","authenticated-orcid":false,"given":"Senhorinha","family":"Teixeira","sequence":"additional","affiliation":[{"name":"ALGORITMI Research Centre, University of Minho, 4800-058 Guimar\u00e3es, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1884-2380","authenticated-orcid":false,"given":"Delfim","family":"Soares","sequence":"additional","affiliation":[{"name":"CMEMS Research Centre, University of Minho, 4800-058 Guimar\u00e3es, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7464-3944","authenticated-orcid":false,"given":"Manuel","family":"Ferreira","sequence":"additional","affiliation":[{"name":"MEtRICs Research Centre, University of Minho, 4800-058 Guimar\u00e3es, Portugal"}]},{"given":"Jos\u00e9","family":"Teixeira","sequence":"additional","affiliation":[{"name":"MEtRICs Research Centre, University of Minho, 4800-058 Guimar\u00e3es, Portugal"}]}],"member":"1968","published-online":{"date-parts":[[2020,6,1]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"2262","DOI":"10.1016\/j.rser.2011.02.015","article-title":"A review on biomass as a fuel for boilers","volume":"15","author":"Saidur","year":"2011","journal-title":"Renew. Sustain. Energy Rev."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"231","DOI":"10.1016\/j.biombioe.2018.04.021","article-title":"Possibilities for CO2 emission reduction using biomass in European integrated steel plants","volume":"115","author":"Mandova","year":"2018","journal-title":"Biomass Bioenergy"},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"960","DOI":"10.1016\/j.rser.2019.06.022","article-title":"Current status and future perspectives for energy production from solid biomass in the European industry","volume":"112","author":"Malico","year":"2019","journal-title":"Renew. Sustain. Energy Rev."},{"key":"ref_4","doi-asserted-by":"crossref","unstructured":"Enes, T., Aranha, J., Fonseca, T.F., Lopes, D., Alves, A., and Lousada, J. (2019). Thermal properties of residual agroforestry biomass of northern portugal. Energies, 12.","DOI":"10.3390\/en12081418"},{"key":"ref_5","unstructured":"DGEG, Direc\u00e7\u00e3o Geral de Energia e Geologia (2020). Renov\u00e1veis-Estat\u00edticas R\u00e1pidas No 181, 2020."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"1221","DOI":"10.1016\/j.rser.2017.03.140","article-title":"Biomass resources in Portugal: Current status and prospects","volume":"78","author":"Ferreira","year":"2017","journal-title":"Renew. Sustain. Energy Rev."},{"key":"ref_7","unstructured":"ICNF (2015). 6o Invent\u00e1rio Florestal Nacional - \u00c1reas dos usos e das esp\u00e9cies florestais de Portugal Continental."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"2551","DOI":"10.1016\/j.apenergy.2010.02.007","article-title":"Assessment of forest biomass for use as energy. GIS-based analysis of geographical availability and locations of wood-fired power plants in Portugal","volume":"87","author":"Viana","year":"2010","journal-title":"Appl. Energy"},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"113","DOI":"10.1016\/j.pecs.2011.10.001","article-title":"Pollutants from the combustion of solid biomass fuels","volume":"38","author":"Williams","year":"2012","journal-title":"Prog. Energy Combust. Sci."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"665","DOI":"10.1016\/j.egypro.2017.07.179","article-title":"CFD modeling of combustion in biomass furnace","volume":"120","author":"Silva","year":"2017","journal-title":"Energy Procedia"},{"key":"ref_11","first-page":"36","article-title":"Combustion modelling of a 20 kW pellet boiler","volume":"6","author":"Silva","year":"2018","journal-title":"Energy"},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"3300","DOI":"10.1021\/ef9001499","article-title":"Development of a variable activation energy model for biomass devolatilization","volume":"23","author":"Biagini","year":"2009","journal-title":"Energy Fuels"},{"key":"ref_13","first-page":"9","article-title":"Study of devolatilization rates of pine wood and mass loss of wood pellets","volume":"6","author":"Fraga","year":"2017","journal-title":"Energy"},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"5601","DOI":"10.1016\/j.biortech.2010.02.008","article-title":"Thermal behaviour and kinetics of coal\/biomass blends during co-combustion","volume":"101","author":"Gil","year":"2010","journal-title":"Bioresour. Technol."},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"63","DOI":"10.1016\/j.biortech.2017.12.029","article-title":"Pyrolysis kinetics and thermal behavior of waste sawdust biomass using thermogravimetric analysis","volume":"251","author":"Mishra","year":"2018","journal-title":"Bioresour. Technol."},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"2182","DOI":"10.1016\/j.fuel.2011.02.012","article-title":"TGA and macro-TGA characterisation of biomass fuels and fuel mixtures","volume":"90","author":"Skreiberg","year":"2011","journal-title":"Fuel"},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"425","DOI":"10.1016\/j.enconman.2013.06.016","article-title":"Thermogravimetric study of biomass, sewage sludge and coal combustion","volume":"75","author":"Magdziarz","year":"2013","journal-title":"Energy Convers. Manag."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"195","DOI":"10.1016\/j.fuel.2008.02.002","article-title":"Pyrolysis kinetics and combustion characteristics of waste recovered fuels","volume":"88","author":"Grammelis","year":"2009","journal-title":"Fuel"},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"191","DOI":"10.1016\/j.fuproc.2005.05.002","article-title":"Studies on the combustion behaviour of blends of Indian coals by TGA and Drop Tube Furnace","volume":"87","author":"Biswas","year":"2006","journal-title":"Fuel Process. Technol."},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"192","DOI":"10.1016\/j.tca.2011.09.021","article-title":"Combustion behaviour of biomass fuels and their blends with lignite","volume":"526","author":"Vamvuka","year":"2011","journal-title":"Thermochim. Acta"},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"952","DOI":"10.1016\/j.cherd.2010.02.008","article-title":"Pyrolysis of wheat straw in a thermogravimetric analyzer: Effect of particle size and heating rate on devolatilization and estimation of global kinetics","volume":"88","author":"Mani","year":"2010","journal-title":"Chem. Eng. Res. Des."},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"468","DOI":"10.1016\/j.fuel.2014.07.015","article-title":"A study on the dynamic combustion behavior of a biomass fuel bed","volume":"135","author":"Boriouchkine","year":"2014","journal-title":"Fuel"},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"510","DOI":"10.1016\/j.biortech.2016.07.136","article-title":"Thermogravimetric kinetic study of agricultural residue biomass pyrolysis based on combined kinetics","volume":"219","author":"Wang","year":"2016","journal-title":"Bioresour. Technol."},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"739","DOI":"10.1016\/j.fuproc.2012.10.010","article-title":"Thermal analysis and kinetics of biomass samples","volume":"106","year":"2013","journal-title":"Fuel Process. Technol."},{"key":"ref_25","first-page":"569","article-title":"Devolatilization behaviour and pyrolysis kinetic modelling of Spanish biomass fuels","volume":"113","author":"Porteiro","year":"2012","journal-title":"J. Therm. Anal. Calorim."},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"491","DOI":"10.1016\/j.apenergy.2011.12.056","article-title":"Thermogravimetric analysis and kinetic study of poplar wood pyrolysis","volume":"97","author":"Slopiecka","year":"2012","journal-title":"Appl. Energy"},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"1708","DOI":"10.1016\/j.combustflame.2011.11.015","article-title":"Smouldering of pine wood: Kinetics and reaction heats","volume":"159","author":"Zobel","year":"2012","journal-title":"Combust. Flame"},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"2047","DOI":"10.1016\/j.biortech.2010.09.081","article-title":"Thermal degradation mechanisms of wood under inert and oxidative environments using DAEM methods","volume":"102","author":"Shen","year":"2011","journal-title":"Bioresour. Technol."},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"66","DOI":"10.1016\/j.jaap.2010.05.008","article-title":"Study of the pyrolysis of biomass using thermo-gravimetric analysis (TGA) and concentration measurements of the evolved species","volume":"89","author":"Seo","year":"2010","journal-title":"J. Anal. Appl. Pyrolysis"},{"key":"ref_30","doi-asserted-by":"crossref","first-page":"9797","DOI":"10.1016\/j.biortech.2010.07.094","article-title":"Pyrolysis kinetics and decomposition characteristics of pine trees","volume":"101","author":"Kim","year":"2010","journal-title":"Bioresour. Technol."},{"key":"ref_31","doi-asserted-by":"crossref","first-page":"939","DOI":"10.1016\/j.fuproc.2009.02.010","article-title":"Investigation of combustion kinetics of treated and untreated waste wood samples with thermogravimetric analysis","volume":"90","author":"Yorulmaz","year":"2009","journal-title":"Fuel Process. Technol."},{"key":"ref_32","doi-asserted-by":"crossref","first-page":"1024","DOI":"10.1016\/j.fuel.2008.10.034","article-title":"Kinetic study on thermal decomposition of woods in oxidative environment","volume":"88","author":"Shen","year":"2009","journal-title":"Fuel"},{"key":"ref_33","doi-asserted-by":"crossref","first-page":"36","DOI":"10.1016\/j.biortech.2016.05.039","article-title":"Determination of kinetic parameters for biomass combustion","volume":"216","author":"Pizarro","year":"2016","journal-title":"Bioresour. Technol."},{"key":"ref_34","doi-asserted-by":"crossref","first-page":"463","DOI":"10.1016\/j.powtec.2016.03.016","article-title":"An assessment on co-combustion characteristics of Chinese lignite and eucalyptus bark with TG\u2013MS technique","volume":"294","author":"Yu","year":"2016","journal-title":"Powder Technol."},{"key":"ref_35","doi-asserted-by":"crossref","first-page":"360","DOI":"10.1016\/j.fuproc.2015.02.018","article-title":"Effect of the number of TGA curves employed on the biomass pyrolysis kinetics results obtained using the Distributed Activation Energy Model","volume":"134","author":"Goos","year":"2015","journal-title":"Fuel Process. Technol."},{"key":"ref_36","doi-asserted-by":"crossref","first-page":"897","DOI":"10.1016\/j.renene.2015.05.049","article-title":"Determination and comparison of combustion kinetics parameters of agricultural biomass from olive trees","volume":"83","author":"Zamorano","year":"2015","journal-title":"Renew. Energy"},{"key":"ref_37","doi-asserted-by":"crossref","first-page":"282","DOI":"10.1016\/j.biortech.2015.01.087","article-title":"Kinetic studies on the pyrolysis of pinewood","volume":"182","author":"Mishra","year":"2015","journal-title":"Bioresour. Technol."},{"key":"ref_38","doi-asserted-by":"crossref","first-page":"251","DOI":"10.1016\/j.enconman.2015.07.077","article-title":"Pyrolysis behaviors and kinetic studies on Eucalyptus residues using thermogravimetric analysis","volume":"105","author":"Chen","year":"2015","journal-title":"Energy Convers. Manag."},{"key":"ref_39","doi-asserted-by":"crossref","first-page":"1045","DOI":"10.1016\/j.enconman.2014.06.074","article-title":"Evaluating the accuracy of the Distributed Activation Energy Model for biomass devolatilization curves obtained at high heating rates","volume":"86","year":"2014","journal-title":"Energy Convers. Manag."},{"key":"ref_40","doi-asserted-by":"crossref","first-page":"40","DOI":"10.1016\/j.biortech.2012.12.136","article-title":"In-depth investigation on the pyrolysis kinetics of raw biomass. Part I: Kinetic analysis for the drying and devolatilization stages","volume":"131","author":"Chen","year":"2013","journal-title":"Bioresour. Technol."},{"key":"ref_41","first-page":"413","article-title":"Modeling moving and fixed bed combustion","volume":"4","author":"Peters","year":"2010","journal-title":"Handb. Combust."},{"key":"ref_42","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1016\/j.tca.2011.03.034","article-title":"ICTAC Kinetics Committee recommendations for performing kinetic computations on thermal analysis data","volume":"520","author":"Vyazovkin","year":"2011","journal-title":"Thermochim. Acta"},{"key":"ref_43","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1016\/j.jaap.2011.01.004","article-title":"Biomass pyrolysis kinetics: A comparative critical review with relevant agricultural residue case studies","volume":"91","author":"White","year":"2011","journal-title":"J. Anal. Appl. Pyrolysis"},{"key":"ref_44","doi-asserted-by":"crossref","first-page":"567","DOI":"10.1016\/j.fuel.2011.09.054","article-title":"Effects of pyrolysis conditions on the heating rate in biomass particles and applicability of TGA kinetic parameters in particle thermal conversion modelling","volume":"93","author":"Mehrabian","year":"2012","journal-title":"Fuel"},{"key":"ref_45","doi-asserted-by":"crossref","first-page":"1101","DOI":"10.1016\/j.fuproc.2011.01.005","article-title":"Air and oxy-fuel combustion characteristics of biomass\/lignite blends in TGA-FTIR","volume":"92","year":"2011","journal-title":"Fuel Process. Technol."},{"key":"ref_46","doi-asserted-by":"crossref","first-page":"868","DOI":"10.1016\/j.fuel.2017.05.050","article-title":"Combustion of Turkish lignites and olive residue: Experiments and kinetic modelling","volume":"203","author":"Magalhaes","year":"2017","journal-title":"Fuel"},{"key":"ref_47","doi-asserted-by":"crossref","first-page":"727","DOI":"10.1016\/j.enconman.2014.10.042","article-title":"TGA\u2013FTIR analysis of co-combustion characteristics of paper sludge and oil-palm solid wastes","volume":"89","author":"Lin","year":"2015","journal-title":"Energy Convers. Manag."},{"key":"ref_48","doi-asserted-by":"crossref","first-page":"1622","DOI":"10.1016\/j.renene.2008.11.011","article-title":"Thermogravimetric kinetic analysis of the combustion of biowastes","volume":"34","author":"Otero","year":"2009","journal-title":"Renew. Energy"},{"key":"ref_49","doi-asserted-by":"crossref","first-page":"117","DOI":"10.1016\/j.aca.2009.08.016","article-title":"Current technologies for analysis of biomass thermochemical processing: A review","volume":"651","author":"Bahng","year":"2009","journal-title":"Anal. Chim. Acta"},{"key":"ref_50","doi-asserted-by":"crossref","first-page":"43","DOI":"10.1016\/j.biombioe.2012.11.011","article-title":"A weighted average global process model based on two L stage kinetic scheme for biomass combustion","volume":"48","author":"Fang","year":"2012","journal-title":"Biomass Bioenergy"},{"key":"ref_51","doi-asserted-by":"crossref","first-page":"217","DOI":"10.1016\/S1003-6326(08)60039-4","article-title":"Evaluation of reliability of Coats-Redfern method for kinetic analysis of non-isothermal TGA","volume":"18","author":"Abbasi","year":"2008","journal-title":"Trans. Nonferrous Met. Soc. China"},{"key":"ref_52","doi-asserted-by":"crossref","first-page":"68","DOI":"10.1038\/201068a0","article-title":"Kinetic parameters from thermogravimetric data","volume":"201","author":"Coats","year":"1964","journal-title":"Nature"},{"key":"ref_53","first-page":"3","article-title":"Characteristics of single wood particle pyrolysis using particle image velocimetry Transport processes during pyrolysis","volume":"39","author":"Kluska","year":"2018","journal-title":"Arch. Thermodyn."},{"key":"ref_54","doi-asserted-by":"crossref","first-page":"184","DOI":"10.1016\/j.enconman.2016.10.055","article-title":"Pyrolysis kinetics and behavior of potassium-impregnated pine wood in TGA and a fixed-bed reactor","volume":"130","author":"Guo","year":"2016","journal-title":"Energy Convers. Manag."},{"key":"ref_55","doi-asserted-by":"crossref","first-page":"45","DOI":"10.1016\/j.fuproc.2018.10.015","article-title":"Grindability of torrefied wood chips and wood pellets","volume":"182","author":"Manouchehrinejad","year":"2018","journal-title":"Fuel Process. Technol."},{"key":"ref_56","doi-asserted-by":"crossref","first-page":"177","DOI":"10.1016\/j.jaap.2013.01.012","article-title":"The effect of the biomass components lignin, cellulose and hemicellulose on TGA and fixed bed pyrolysis","volume":"101","author":"Burhenne","year":"2013","journal-title":"J. Anal. Appl. Pyrolysis"},{"key":"ref_57","first-page":"413","article-title":"Reactivity studies of sludge and biomass combustion","volume":"3","author":"Harun","year":"2009","journal-title":"Int. J. Eng."}],"container-title":["Energies"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1996-1073\/13\/11\/2756\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T09:34:27Z","timestamp":1760175267000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1996-1073\/13\/11\/2756"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2020,6,1]]},"references-count":57,"journal-issue":{"issue":"11","published-online":{"date-parts":[[2020,6]]}},"alternative-id":["en13112756"],"URL":"https:\/\/doi.org\/10.3390\/en13112756","relation":{},"ISSN":["1996-1073"],"issn-type":[{"value":"1996-1073","type":"electronic"}],"subject":[],"published":{"date-parts":[[2020,6,1]]}}}