Published date:Aug 10 2022

Journal Title: KnE Material Sciences

Issue title: 1st International FibEnTech Congress (FibEnTech21) – New Opportunities for Fibrous Materials in the Ecological Transition

Pages:212–218

DOI: 10.18502/kms.v7i1.11625

André Studartandre.studart@ubi.ptDepartment of Civil Engineering and Architecture, University of Beira Interior, Calçada Fonte do Lameiro, 6201-001, Covilhã, Portugal

Leonardo MarchioriDepartment of Civil Engineering and Architecture, University of Beira Interior, Calçada Fonte do Lameiro, 6201-001, Covilhã, Portugal

Maria Vitoria MoraisDepartment of Civil Engineering and Architecture, University of Beira Interior, Calçada Fonte do Lameiro, 6201-001, Covilhã, Portugal

António AlbuquerqueDepartment of Civil Engineering and Architecture, University of Beira Interior, Calçada Fonte do Lameiro, 6201-001, Covilhã, Portugal

Pedro Gabriel AlmeidaDepartment of Civil Engineering and Architecture, University of Beira Interior, Calçada Fonte do Lameiro, 6201-001, Covilhã, Portugal

Victor CavaleiroDepartment of Civil Engineering and Architecture, University of Beira Interior, Calçada Fonte do Lameiro, 6201-001, Covilhã, Portugal

Mineralogical and chemical evaluations are necessary to investigate the background and origins of materials. In terms of residues commonly produced around the world, ashes biomass stands out for its high calorific capacity and use for energy production at thermoelectrical facilities. Given current sustainability issues and new demands from society, ashes and soil from pine biomass in the Castelo Branco region were investigated to research possible anthropogenic contaminations, heavy metals among their composition, and their physic-chemical characteristics. These properties can be used to define possible valorisation methods through residue introduction into the soil for its reinforcement and liner application. The results indicated that ashes biomass could help achieve these objectives and could be introduced into the soil, due to its enrichment with pozzolanic minerals and fine granulometry, while having a low-density, which could reduce final weight; however it was considerably different from the original biomass, and contained anthropogenic contaminations and high concentrations of heavy metals.

Keywords: biomass ashes, chemical and mineralogical properties, residue valorisation, soil reinforcement, liner material

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