DO, T.-T.; VAN, H.-T.; NGUYEN, T.-M.-T. Ammonium Adsorption from Aqueous Solutions Using MnFe2O4-Functionalized Coffee Husk Biochar Nanocomposites: An Evaluation of HNO3 and NaOH Activation. Applied Environmental Research, [S. l.], v. 48, n. 3, 2026. DOI: 10.35762/AER.2026021. Disponível em: https://ph01.tci-thaijo.org/index.php/aer/article/view/263821. Acesso em: 16 sep. 2026.