DO, T.-T.; NGUYEN, T.-H.; NGUYEN, T.-D.; VAN, H.-T. The ammonium adsorption capacity of coffee husk‑derived activated carbon composite with \(\text{MnFe}_2\text{O}_4\). HPU2 Journal of Science: Natural Sciences and Technology, [S. l.], v. 4, n. 01, p. 39–47, 2025. DOI: 10.56764/hpu2.jos.2025.4.01.39-47. Disponível em: https://sj.hpu2.edu.vn/index.php/journal/article/view/514. Acesso em: 30 apr. 2025.