Use of Invasive Acacia Biomass to Produce Biochar and Solid Biofuels
Source abstract
Abstract
This study focuses on the production of high-density solid biofuels and high-fixed-carbon biochar from two invasive acacia species harvested in a protected area in Northwestern Spain, thereby contributing to its silviculture management challenge. It is possible to transform the initial biomass into briquettes and pellets reaching high densified values above 1300 kg/m3 and 500 kg/m3, respectively. Using thermochemical conversion processes in a simple double chamber oven, a biochar was obtained with a fixed carbon of 66%. Several parameters were analyzed and compared between the original biomass and the resulting products. The results show that an added value could be achieved without applying a complex system to transform, starting from residual biomass from invasive species.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Bioenergy crop production and management · Thermochemical Biomass Conversion Processes · Forest Biomass Utilization and Management
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Hydro-Forestry Geomodeling Research Group, School of Forestry Engineering, University of Vigo, 36005 Pontevedra, Spain
Funding
FEADER 2023/011B · ERDF, EU
References (54)
Show source-provided references
1. Nunes, L.J.R., Meireles, C.I.R., Pinto Gomes, C.J., and Almeida Ribeiro, N.M.C. (2019). Historical Development of the Portuguese Forest: The Introduction of Invasive Species. Forests, 10.10.3390/f10110974 ↗
2. (2024, August 08). Spanish Law—Ley 42/2007, de 13 de Diciembre, del Patrimonio Natural y de la Biodiversidad (of Natural Heritage and Biodiversity). BOE n. 299. 14/12/2007. Jefatura del Estado. Available online: https://www.boe.es/eli/es/l/2007/12/13/42/con.
3. (2024, September 04). Executive Order—Real Decreto 630/2013, de 2 de Agosto, Por el que se Regula el Catálogo Español de Especies Exóticas Invasoras (Regulating the Spanish Catalogue of Invasive Alien Species). BOE n. 185. 03/08/2013. Ministerio de Agricultura, Alimentación y Medio Ambiente. Available online: https://www.boe.es/eli/es/rd/2013/08/02/630/con.
4. (2024, September 04). Legal Order—Orden TED/1126/2020, de 20 de Noviembre, por la que se Modifica el Anexo del Real Decreto 139/2011, de 4 de Febrero, Para el Desarrollo del Listado de Especies Silvestres en Régimen de Protección Especial y del Catálogo Español de Especies Amenazadas, y el Anexo del Real Decreto 630/2013, de 2 de Agosto, por el que se Regula el Catálogo Español de Especies Exóticas Invasoras (List of Wild Species under Special Protection and the Spanish Catalogue of Endangered Species and Spanish Catalogue of Invasive Species). BOE n. 314. 01/12/2020. Pag. 108167–108171. Available online: https://www.boe.es/eli/es/o/2020/11/20/ted1126.
5. Andreu, J., and Vilalta, J.P. (2012). Análisis del estado de invasión por especies exóticas en Cataluña. Gestión de Especies Exóticas Invasoras: Compartiendo Problemas Comunes, Buscando Soluciones Comunes: Notas Científicas, 4° Congreso Nacional sobre Especies Exóticas Invasoras" EEI 2012", Grupo Especialista en Invasiones Biológicas. Serie Técnica N° 5.
6. (2024, September 18). MITECO—Ministerio para la Transición Ecológica y el Reto Demográfico. 2024. Catálogo Español de Especies Exóticas Invasoras (Spanish Catalogue of Invasive Species). Available online: https://www.miteco.gob.es/es/biodiversidad/temas/conservacion-de-especies/especies-exoticas-invasoras/ce_eei_flora.html.
7. (2025, January 15). Anthos. Sistema de Información de las Plantas de España (Information System of the Plants of Spain). Real Jardín Botánico. CSIC-Fund. Biodivers. Available online: http://www.anthos.es.
8. Scenarios for the management of invasive Acacia species in a protected area: Implications of clearing efficacy10.1016/j.jenvman.2019.02.112 ↗
9. Identification of Acacia invasive species in protected areas of Spain using PlanetScope high-resolution satellite images and machine learning models in time series: An important action for protective management of forests10.1016/j.foreco.2025.122696 ↗
10. Could control of invasive acacias be a source of biomass for energy under mediterranean conditions?
11. The effects of biochar addition on soil physicochemical properties: A review10.1016/j.catena.2021.105284 ↗
12. Current technologies for analysis of biomass thermochemical processing: A review10.1016/j.aca.2009.08.016 ↗
13. Thermodegradation characterization of hardwoods and softwoods in torrefaction and transition zone between torrefaction and pyrolysis10.1016/j.fuel.2021.122281 ↗
14. Adsorption potential of biochar obtained from pyrolysis of raw and torrefied Acacia nilotica towards removal of methylene blue dye from synthetic wastewater10.1007/s13399-021-01645-0 ↗
15. Effects of biochar from slow pyrolysis of papermill waste on agronomic performance and soil fertility10.1007/s11104-009-0050-x ↗
16. Production of solid biochar fuel from waste biomass by hydrothermal carbonization10.1016/j.fuel.2012.07.069 ↗
17. Physical and Chemical Properties of Bio-Oils from Microwave Pyrolysis of Corn Stover
18. Biochar as a Geoengineering Climate Solution: Hazard Identification and Risk Management10.1080/10643389.2010.507980 ↗
19. Lee, J. (2013). Biochar: A Coproduct to Bioenergy from Slow-Pyrolysis Technology. Advance Biofuels and Bioproducts, Springer.10.1007/978-1-4614-3348-4 ↗
20. Pyrolysis technologies for municipal solid waste: A review10.1016/j.wasman.2014.08.004 ↗
21. Jha, S., Nanda, S., Acharya, B., and Dalai, A.K. (2022). A Review of Thermochemical Conversion of Waste Biomass to Biofuels. Energies, 15.10.3390/en15176352 ↗
22. Ouyang, P., Narayanan, M., Shi, X., Chen, X., Li, Z., Luo, Y., and Ma, Y. (2023). Integrating biochar and bacteria for sustainable remediation of metal-contaminated soils. Biochar, 5.10.1007/s42773-023-00265-3 ↗
23. Biochar derived from agricultural wastes and wood residues for sustainable agricultural and environmental applications10.1016/j.iswcr.2021.09.006 ↗
24. Biochar, climate change and soil: A review to guide future research
25. Torrefaction, pyrolysis and two-stage thermodegradation of hemicellulose, cellulose and lignin10.1016/j.fuel.2019.116168 ↗
26. Gheorghe, C., Marculescu, C., Badea, A., Dinca, C., and Apostol, T. (2009, January 1–3). Effect of pyrolysis conditions on bio-char production from biomass. Proceedings of the 3rd WSEAS International Conference on Renewable Energy Sources, University of La Laguna, Tenerife, Canary Islands, Spain. Available online: https://www.researchgate.net/profile/Tiberiu-Apostol/publication/266179244_Effect_of_Pyrolysis_Conditions_on_Bio-Char_Production_from_Biomass/links/54b7c4d60cf28faced606f00/Effect-of-Pyrolysis-Conditions-on-Bio-Char-Production-from-Biomass.pdf.
27. Optimization of Biochar Preparation from Acacia Wood for Soil Amendment10.4186/ej.2017.21.2.99 ↗
28. Recent advances in utilization of biochar10.1016/j.rser.2014.10.074 ↗
29. Biochar effects on soil biota—A review10.1016/j.soilbio.2011.04.022 ↗
30. Lehmann, J.J., and Joseph, S. (2009). Biochar for Environmental Management: Science and Technology, Routledge.
31. Financial viability of biofuel and biochar production from forest biomass in the face of market price volatility and uncertainty10.1016/j.apenergy.2018.08.085 ↗
32. González-Prieto, Ó., Ortíz Torres, L., and Vázquez Torres, A. (2024). Comparison of waste biomass from pine, eucalyptus, and Acacia and the biochar elaborated using pyrolysis in a simple double chamber biomass reactor. Appl. Sci., 14.10.3390/app14051851 ↗
33. (2024, June 23). EBC (2012–2022). European Biochar Certificate—Guidelines for Sustainable Production of Biochar. European Biochar Foundation (EBC), Arbaz, Switzerland. Version 10.1 from 10th Jan 2022. Available online: http://european-biochar.org.
34. Quicker, P., and Biokohle Weber, K. (2016). Herstellung, Eigenschaften und Verwendung von Biomassekarbonisaten, Springer.10.1007/978-3-658-03689-8 ↗
35. Properties of biochar10.1016/j.fuel.2017.12.054 ↗
36. (2024). Solid Biofuels—Determination of Moisture Content—Oven Dry Method—Part 3: Moisture in General Analysis Sample (ISO 18134-3:2023) (Standard No. UNE-EN ISO 18134-3).
37. (2016). Solid Biofuels—Determination of Bulk Density (ISO 17828:2015) (Standard No. UNE-EN ISO 17828).
38. (2024). Solid Biofuels—Determination of the Content of Volatile Matter (ISO 18123:2023) (Standard No. UNE-EN ISO 18123).
39. (2023). Solid Biofuels—Determination of Ash Content (ISO 18122:2022) (Standard No. UNE-EN ISO 18122).
40. (2012). Soil Improvers and Growing Media—Determination of pH (Standard No. UNE-EN 13037).
41. Hydrothermal treatment of lignocellulosic biomass towards low-carbon development: Production of high-value-added bioproducts10.1016/j.enchem.2024.100133 ↗
42. Basu, P. (2018). Chapter 3—Biomass Characteristics. Biomass Gasification, Pyrolysis and Torrefaction, Academic Press. [3rd ed.].10.1016/B978-0-12-812992-0.00003-0 ↗
43. Basu, P. (2018). Chapter 4—Torrefaction. Biomass Gasification, Pyrolysis and Torrefaction, Academic Press. [3rd ed.].10.1016/B978-0-12-812992-0.00004-2 ↗
44. Intermediate pyrolysis of Acacia cincinnata and Acacia holosericea species for bio-oil and biochar production10.1016/j.enconman.2018.09.041 ↗
45. Effects of carbonisation conditions on the yield and chemical composition of Acacia and Eucalyptus wood chars10.1016/0961-9534(92)90037-Q ↗
46. Production and characterization of slow pyrolysis biochar: Influence of feedstock type and pyrolysis conditions10.1111/gcbb.12018 ↗
47. Comparisons of biochar properties from wood material and crop residues at different temperatures and residence times10.1021/ef400972z ↗
48. Lian, W., Yang, L., Joseph, S., Shi, W., Bian, R., Zheng, J., Li, L., Shan, S., and Pan, G. (2020). Utilization of biochar produced from invasive plant species to efficiently adsorb Cd (II) and Pb (II). Bioresour. Technol., 317.10.1016/j.biortech.2020.124011 ↗
49. Producción de Biocombustibles Solidos de Alta Densidad en España
50. De Mecanización, G. (2003). Procesos de Densificación de la Biomasa Forestal, GAMESAL.
51. Production and utilization of fuel pellets from biomass: A review10.1016/j.fuproc.2018.09.021 ↗
52. A review of biomass densification systems to develop uniform feedstock commodities for bioenergy application10.1002/bbb.324 ↗
53. Ibitoye, S.E., Loha, C., Mahamood, R.M., Jen, T.C., Alam, M., Sarkar, I., Das, P., and Akinlabi, E.T. (2024). An overview of biochar production techniques and applications in iron and steel industries. Bioresour. Bioprocess., 11.10.1186/s40643-024-00779-z ↗
54. Efficient techniques for the removal of toxic heavy metals from aquatic environment: A review10.1016/j.jece.2017.05.029 ↗