2025-03-132025-03-132024-04-12https://repositorio.ifal.edu.br/handle/123456789/897The generation of waste in the Fiberglass Reinforced Plastics (FRP) industry and in Water Treatment Plants (WTP) is a serious environmental and social problem, due to the lack of areas to dispose of these liabilities, which become secondary raw materials for other industrial processes. In this context, the aim of this research was to analyze the characteristics and properties of GRP particulate (PPRFV) and water treatment plant sludge (LETA) in the production of porous ceramics, in order to obtain a more efficient product in the light of the circular economy. The waste was characterized using X-ray fluorescence (XRF), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), derivative and differential thermogravimetric analysis (TG/DTG/DSC) and scanning electron microscopy (SEM). Experimental traces were used with levels of PPRFV (0%, 4%, 6% and 8%) and LETA (5%, 10%, 15% and 20%), as a partial substitute for clay, in which 10 specimens were molded per composition. The data obtained from the response variables was submitted to analysis of variance (ANOVA) and polynomial regression. PPRFV showed a majority of CaO (47.79%) and SiO2 (36.38%), while LETA showed SiO2 (52.06%) and Al2O3 (29.83%). X-ray diffraction detected the presence of an amorphous halo and the quartz crystalline phase in PPRFV and LETA, in that order. The infrared of the PPRFV allowed functional groups that occur in the chemical structure of epoxy resin to be determined, while the sludge showed absorption bands characteristic of clay minerals. Thermal analysis of the particulate revealed an exothermic event at a temperature of around 450°C and a mass loss of 40.33%. The sludge suffered a total mass loss of 14.83%. SEM micrographs of the particulate revealed the existence of fibrous filaments adhered to the particles with a rough texture, while the sludge showed a chip-like shape, characteristic of materials with an organic and inorganic load. With regard to the technological tests, the experimental mix with 8% PPRFV and 20% LETA emerged as the most promising, showing an increase of 83.84%, 47.36% and 26.67% in the Linear Shrinkage, Water Absorption and Apparent Porosity indices, respectively, compared to the reference mix. The Permeate Flow data confirmed the increase observed in the physical tests, reaching a value of 5,222.27 L/m².h for the experimental mix with the highest percentage of waste. Based on the data obtained, this study proved to be important in the development of a technical product with a view to reintroducing GRP particulates and WTP sludge into the water treatment system at the filtration stage.ptEconomia circularResíduosAgente parogênicoMembrana porosaCircular economyWasteParogenic agentPorous membraneDissertaçãoENGENHARIAS