DINH, T.-L. .; NGUYEN, T.-H.; NGUYEN, V.-T.; DO, T.-T. Removal of Cr(VI) from aqueous solutions using MnFe₂O₄–Coffee husk activated carbon composite. HPU2 Journal of Science: Natural Sciences and Technology, [S. l.], v. 5, n. 01, p. 35–44, 2026. DOI: 10.56764/hpu2.jos.2026.5.01.35-44. Disponível em: https://sj.hpu2.edu.vn/index.php/journal/article/view/595. Acesso em: 29 apr. 2026.