TY - JOUR T1 - Removal of Cr (VI) from synthetic effluents using hydrochar from waste açaí (Euterpe precatoria Mart.) seeds as a low-cost biosorbent JO - Acta Amazonica A1 - SANTOS, Railane Inácio Lira dos A1 - SOUTO, Luís Fernando Lira A1 - MORAES, Nathiely Andrade de A1 - MENDES, Ana Clara de Sousa A1 - ARAÚJO, Naelly Nayllén Alves A1 - FREITAS, Flávio Augusto de SN - 0044-5967 UL - 10.1590/1809-4392202403143 VL - 55 Y1 - 2025 PB - Brasil ER -