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SOLID RESIDUES FROM THE COBUSTION OF BIOMASS - HEAVY METALS CONTAMINATION AND POSSIBLE REUSE
Abstract
This manuscript presents the comprehensive chemical and physical analysis of two types of biomass ashes derived from power and heat generation in order to highlight their positive parameters and properties and to propose the way for their safe reuse in the production of building materials. The analysis of biomass ashes included the assessment of chemical composition, dry matter content, loss on ignition, particle size distribution, Blaine fineness, dry powder density, specific density, pozzolanic activity, SEM morphology and microstructure. Emphasis was placed on the analysis of heavy metals content. The results of comprehensive physical and chemical tests proved the potential use of the investigated biomass ashes in the production of construction materials in the form of active component of blended binders or mineral fillers, while ensuring safe disposal of environmentally hazardous waste from energy production. Thus, it will be possible design and develop new eco-efficient materials with low carbon footprint enabling heavy metals stabilization and immobilization.
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