2025-04-252025-04-252025-03-24RUIVO, Alex Gabriel Oliveira. Título: subtítulo. ANO DE PUBLICAÇÃO. 69 f. Trabalho de Curso (Graduação) – Faculdade de Engenharia Química, Instituto de Tecnologia, Universidade Federal do Pará, Belém, ANO DE DEFESA. Disponível em: <https://bdm.ufpa.br/handle/prefix/8019>. Acesso em:.https://bdm.ufpa.br/handle/prefix/8019Kaolin residue is an ore primarily composed of the mineral kaolinite, which has a Si:Al ratio of 1, making it a highly efficient starting material for the synthesis of zeolite 4A. Zeolites are aluminosilicates widely used in catalysis and adsorption applications due to their versatile structural properties, particularly zeolite A, which is effective in copper ion adsorption. Based on these properties, studies have been conducted to determine their maximum thermal capacity. This work aimed to analyze how zeolite A synthesized from kaolin residue changes with increasing temperature through characterizations and adsorption kinetics tests. The research began with the preparation of the kaolin residue, which was dried, disaggregated, and calcined at 700 °C to form metakaolin. This metakaolin was then subjected to hydrothermal synthesis using sodium hydroxide, resulting in zeolite A. The material was characterized via X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM), and Thermogravimetric Analysis (TGA/DTG/DSC), confirming the synthesis efficiency and crystal morphology. The study also investigated how temperature influenced the zeolite’s structure during thermal treatment. The analyses revealed that the zeolite retained its cubic structure up to 800 °C. However, at 900 °C, structural changes occurred, forming the carnegieite phase, while nepheline became the predominant phase at 1000 °C. The calcined zeolite at 400 °C demonstrated over 95% efficiency in removing Cu²+ ions, while those treated at higher temperatures (600 °C and 700 °C) also showed significant performance, with removal rates exceeding 90%. Experimental data indicated that the Elovich model provided the most accurate fit for the adsorption results, followed by the Weber and Morris model. In conclusion, the study demonstrated that zeolite synthesized from kaolin residue retained its structural properties under thermal treatment up to a certain temperature, maintaining efficacy in copper ion adsorption and positioning it as a promising option for environmental remediation processes.Acesso AbertoMaterial ZeolíticoResíduo CauliníticoProcesso AdsortivoTemperaturaZeolitic MaterialKaolin ResidueAdsorptive ProcessTemperature.CNPQ::ENGENHARIAS::ENGENHARIA QUIMICATrabalho de Curso - Graduação - MonografiaAttribution-NonCommercial-NoDerivatives 4.0 International