SCIENTIFIC ANALYSIS OF BROWN COAL FLOTATION USING SURFACTANTS DERIVED FROM INDUSTRIAL WASTE

This study addresses the global challenge of improving brown coal beneficiation efficiency while simultaneously utilizing industrial waste as a resource for surfactant production. In terms of methodology, the objectives of the work consist of studying the influence of waste-derived surfactants on the behavior and properties of coals during flotation and their selective separation. Emulsification of the samples was carried out using a high-shear device, followed by detailed analysis using SEM-EDS and FTIR techniques. The main outcomes obtained are the improved hydrophobic-hydrophilic ratio, increased recovery of combustible materials (70–89%), as well as a decrease in mineral contamination. A significant dependence of flotation efficiency on the surface chemistry change was identified. The improved flotation performance is attributed to enhanced adsorption of waste-derived surfactants on coal surfaces, leading to increased hydrophobicity and improved parti-le–bubble attachment efficiency.

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