Thermogravimetric and calorimetric evaluation of pellets obtained from the biomass of Coffea arabica L.
Introduction: This article presents the results of the research titled Dendroenergetic Analysis of Agricultural and Forest Biomass, conducted in 2024 by Universidad América in collaboration with Fundación Universitaria Minuto de Dios (UNIMINUTO) and Politécnico Grancolombiano.
Problem: Colombia is one of the world’s largest coffee producers, yet the biomass generated beyond the coffee fruit is underutilized. This biomass represents a promising source of energy.
Objective: To conduct a dendroenergetic analysis of Coffea arabica L. biomass pellets by evaluating five key factors: moisture content (%), ash content (%), volatile matter, thermogravimetric properties, and calorific value.
Methodology: The calorific value was evaluated using a CAL3K calorimeter, TGA 8000 thermogravimetric analyzer, the percentage of moisture was determined using a RADWAG moisture balance (±0.0001 g), and the percentage of ash and volatiles was determined using a RADWAG analytical balance (±0.0001 g).
Results: The study found promising energetic properties across samples. Coal derived from the biomass showed particularly high calorific value, low volatile matter, and good resistance to moisture. These findings indicate that Coffea arabica L. biomass is a strong candidate for producing densified biofuels with high energy output.
Conclusion: Given the abundant availability of Coffea arabica L. biomass in Colombia and the favorable calorific characteristics of both wood and pyrolysis charcoal, this biomass is an ideal raw material for developing sustainable, high-energy biofuels.
Originality: This research provides novel dendroenergetic data on Coffea arabica L. biomass under specific conditions.
Limitations: The analysis was limited to a single coffee variety.
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[1] G. Bahamón, “Informe del Gerente,” Bogotá, Dec. 2024. Accessed: Mar. 24, 2025. [Online]. Available: https://federaciondecafeteros.org/app/uploads/2024/12/IG-2024-93-CNC_Digital.pdf
[2] A. Miguel and M. Berrocal, “Evite pérdidas económicas al renovar por zoqueo: Resiembre los sitios perdidos,” Avances técnicos CENICAFE, pp. 1–4, Aug. 2010. doi: https://doi.org/10.38141/10779/0398
[3] A. J. Ragauskas et al., “The path forward for biofuels and biomaterials,” Science, vol. 311, no. 5760, pp. 484–489, Jan. 2006. doi: https://doi.org/10.1126/science.1114736 DOI: https://doi.org/10.1126/science.1114736
[4] K. T. Malladi and T. Sowlati, “Impact of carbon pricing policies on the cost and emission of the biomass supply chain: Optimization models and a case study,” Applied Energy, vol. 267, pp. 1–19, Jun. 2020. doi: https://doi.org/10.1016/j.apenergy.2020.115069 DOI: https://doi.org/10.1016/j.apenergy.2020.115069
[5] L. Duncanson et al., “Biomass estimation from simulated GEDI, ICESat-2 and NISAR across environmental gradients in Sonoma County, California,” Remote Sensing of Environment, vol. 242, pp. 1–16, Jun. 2020. doi: https://doi.org/10.1016/j.rse.2020.111779 DOI: https://doi.org/10.1016/j.rse.2020.111779
[6] M. Kashanian, M. S. Pishvaee, and H. Sahebi, “Sustainable biomass portfolio sourcing plan using multi-stage stochastic programming,” Energy, vol. 204, pp. 1–14, Aug. 2020. doi: https://doi.org/10.1016/j.energy.2020.117923 DOI: https://doi.org/10.1016/j.energy.2020.117923
[7] L. Wu et al., “The composition, energy, and carbon stability characteristics of biochars derived from thermo-conversion of biomass in air-limitation, CO₂, and N₂ at different temperatures,” Waste Management, vol. 141, pp. 136–146, Mar. 2022. doi: https://doi.org/10.1016/j.wasman.2022.01.038 DOI: https://doi.org/10.1016/j.wasman.2022.01.038
[8] K. Difs, E. Wetterlund, L. Trygg, and M. Söderström, “Biomass gasification opportunities in a district heating system,” Biomass and Bioenergy, vol. 34, no. 5, pp. 637–651, May 2010. doi: https://doi.org/10.1016/j.biombioe.2010.01.007 DOI: https://doi.org/10.1016/j.biombioe.2010.01.007
[9] S. Zhang, M. Asadullah, L. Dong, H. L. Tay, and C. Z. Li, “An advanced biomass gasification technology with integrated catalytic hot gas cleaning. Part II: Tar reforming using char as a catalyst or as a catalyst support,” Fuel, vol. 112, pp. 646–653, Oct. 2013. doi: https://doi.org/10.1016/j.fuel.2013.03.015 DOI: https://doi.org/10.1016/j.fuel.2013.03.015
[10] J. Schneider, C. Grube, A. Herrmann, and S. Rönsch, “Atmospheric entrained-flow gasification of biomass and lignite for decentralized applications,” Fuel Processing Technology, vol. 152, pp. 72–82, Nov. 2016. doi: https://doi.org/10.1016/j.fuproc.2016.05.047 DOI: https://doi.org/10.1016/j.fuproc.2016.05.047
[11] C. Serrano, E. Monedero, M. Lapuerta, and H. Portero, “Effect of moisture content, particle size and pine addition on quality parameters of barley straw pellets,” Fuel Processing Technology, vol. 92, no. 3, pp. 699–706, Mar. 2011. doi: https://doi.org/10.1016/j.fuproc.2010.11.031 DOI: https://doi.org/10.1016/j.fuproc.2010.11.031
[12] N. Mišljenović et al., “Physical quality and surface hydration properties of wood-based pellets blended with waste vegetable oil,” Fuel Processing Technology, vol. 134, pp. 214–222, Jun. 2015. doi: https://doi.org/10.1016/j.fuproc.2015.01.037 DOI: https://doi.org/10.1016/j.fuproc.2015.01.037
[13] P. K. Keshav et al., “Bioconversion of alkali delignified cotton stalk using two-stage dilute acid hydrolysis and fermentation of detoxified hydrolysate into ethanol,” Industrial Crops and Products, vol. 91, pp. 323–331, Nov. 2016. doi: https://doi.org/10.1016/j.indcrop.2016.07.031 DOI: https://doi.org/10.1016/j.indcrop.2016.07.031
[14] S. Brethauer and M. H. Studer, “Biochemical conversion processes of lignocellulosic biomass to fuels and chemicals – A review,” Chimia, vol. 69, no. 10, p. 572, Oct. 2015. doi: https://doi.org/10.2533/chimia.2015.572 DOI: https://doi.org/10.2533/chimia.2015.572
[15] K. Promdee and T. Vitidsant, “Synthesis of char, bio-oil and gases using a screw feeder pyrolysis reactor,” Coke and Chemistry, vol. 56, no. 12, pp. 466–469, Dec. 2013. doi: https://doi.org/10.3103/s1068364x13120107 DOI: https://doi.org/10.3103/S1068364X13120107
[16] H. Sutcu, “The examination of liquid, solid, and gas products obtained by the pyrolysis of three different peat and reed samples,” Journal of Energy Resources Technology, vol. 130, no. 2, pp. 1–4, Jun. 2008. doi: https://doi.org/10.1115/1.2906118 DOI: https://doi.org/10.1115/1.2906118
[17] G. Soto and M. Núñez, “Fabricación de pellets de carbonilla, usando aserrín de Pinus radiata (D. Don), como material aglomerante,” Maderas. Ciencia y Tecnología, vol. 10, no. 2, pp. 129–138, Dec. 2014. Accessed: Mar. 24, 2025. [Online]. Available: https://revistas.ubiobio.cl/index.php/MCT/article/view/1396 DOI: https://doi.org/10.4067/S0718-221X2008000200005
[18] R. Tabakaev, I. Shanenkov, A. Kazakov, and A. Zavorin, “Thermal processing of biomass into high-calorific solid composite fuel,” Journal of Analytical and Applied Pyrolysis, vol. 124, pp. 94–102, Mar. 2017. doi: https://doi.org/10.1016/j.jaap.2017.02.016 DOI: https://doi.org/10.1016/j.jaap.2017.02.016
[19] Z. Liu and G. Han, “Production of solid fuel biochar from waste biomass by low temperature pyrolysis,” Fuel, vol. 158, pp. 159–165, Oct. 2015. doi: https://doi.org/10.1016/j.fuel.2015.05.032 DOI: https://doi.org/10.1016/j.fuel.2015.05.032
[20] D. Mohan, C. U. Pittman, and P. H. Steele, “Pyrolysis of wood/biomass for bio-oil: A critical review,” Energy and Fuels, vol. 20, no. 3, pp. 848–889, May 2006. doi: https://doi.org/10.1021/ef0502397 DOI: https://doi.org/10.1021/ef0502397
[21] S. Xiu and A. Shahbazi, “Bio-oil production and upgrading research: A review,” Renewable and Sustainable Energy Reviews, vol. 16, no. 7, pp. 4406–4414, Sep. 2012. doi: https://doi.org/10.1016/j.rser.2012.04.028 DOI: https://doi.org/10.1016/j.rser.2012.04.028
[22] Z. A. B. Z. Alauddin, P. Lahijani, M. Mohammadi, and A. R. Mohamed, “Gasification of lignocellulosic biomass in fluidized beds for renewable energy development: A review,” Renewable and Sustainable Energy Reviews, vol. 14, no. 9, pp. 2852–2862, Dec. 2010. doi: https://doi.org/10.1016/j.rser.2010.07.026 DOI: https://doi.org/10.1016/j.rser.2010.07.026
[23] S. Al Arni, “Comparison of slow and fast pyrolysis for converting biomass into fuel,” Renewable Energy, vol. 124, pp. 197–201, Aug. 2018. doi: https://doi.org/10.1016/j.renene.2017.04.060 DOI: https://doi.org/10.1016/j.renene.2017.04.060
[24] P. Pineda Gómez et al., “Papel del agua en la gelatinización del almidón de maíz: Estudio por calorimetría diferencial de barrido,” Ingeniería y Ciencia, vol. 6, no. 11, pp. 129–141, 2010. Accessed: Mar. 24, 2025. [Online]. Available: http://www.redalyc.org/articulo.oa?id=83516540008
[25] H. Yılmaz, M. Çanakcı, M. Topakcı, and D. Karayel, “The effect of raw material moisture and particle size on agri-pellet production parameters and physical properties: A case study for greenhouse melon residues,” Biomass and Bioenergy, vol. 150, pp. 1–8, Jul. 2021. doi: https://doi.org/10.1016/j.biombioe.2021.106125 DOI: https://doi.org/10.1016/j.biombioe.2021.106125
[26] K. Raveendran, A. Ganesh, and K. C. Khilar, “Pyrolysis characteristics of biomass and biomass components,” Fuel, vol. 75, no. 8, pp. 987–998, Jun. 1996. doi: https://doi.org/10.1016/0016-2361(96)00030-0 DOI: https://doi.org/10.1016/0016-2361(96)00030-0
[27] M. Q. G. Enriquez, R. Velasco, and A. Fernández, “Caracterización de almidones de yuca nativos y modificados para la elaboración de empaques biodegradables,” Biotecnología en el Sector Agropecuario y Agroindustrial, vol. 11, no. 1, pp. 21–30, Nov. 2013. Accessed: Mar. 24, 2025. [Online]. Available: https://revistas.unicauca.edu.co/index.php/biotecnologia/article/view/1222
