Silviyati, Idha, et al. “Effectiveness of Kepok Banana (Musa Paradisiaca) Bread-Based Adsorbent for Fe(III) Removal Using HCl Activation: Freundlich and Langmuir Isotherm Models”. 2025. Chempublish Journal, vol. 9, no. 1, Jan. 2026, pp. 130-4, doi:10.22437/chp.v9i1.44926.