@article{machado_valle_chao_ribeiro_2024,  title={Valorization of Alum Sludge Waste through Zeolite Synthesis for Sustainable Fertilizer Production},  volume={27},  ISSN={1516-1439},  url={https://doi.org/10.1590/1980-5373-MR-2024-0269},  DOI={10.1590/1980-5373-MR-2024-0269},  journal={Materials Research},  publisher={ABM, ABC, ABPol},  author={Machado, Raquel Cardoso and Valle, Stella F. and Chao, Iara Regina Soares and Ribeiro, Caue},  year={2024},  pages={e20240269} }