@article{santos_souto_moraes_mendes_araújo_freitas_2025,  title={Removal of Cr (VI) from synthetic effluents using hydrochar from waste açaí (<i>Euterpe precatoria</i> Mart.) seeds as a low-cost biosorbent},  volume={55},  ISSN={0044-5967},  url={https://doi.org/10.1590/1809-4392202403143},  DOI={10.1590/1809-4392202403143},  journal={Acta Amazonica},  publisher={Instituto Nacional de Pesquisas da Amazônia},  author={SANTOS, Railane Inácio Lira dos and SOUTO, Luís Fernando Lira and MORAES, Nathiely Andrade de and MENDES, Ana Clara de Sousa and ARAÚJO, Naelly Nayllén Alves and FREITAS, Flávio Augusto de},  year={2025},  pages={e55mt24314} }