TY - JOUR AU - Lianasari, Ika Yekti AU - Koesnarpadi, Soerja AU - Pratiwi, Djihan Ryn AU - Munandar, Aris PY - 2023 TI - PENENTUAN VARIASI KOMPOSISI DAN pH OPTIMUM ADSORBEN KITOSAN-Fe3O4 BERDASARKAN PERSEN PENYERAPAN ION Pb2+ JF - JURNAL ATOMIK; Vol 8 No 1 (2023) KW - N2 - Previously, the synthesis of Chitosan-Fe 3 O 4 adsorbent from magnetite (Fe 3 O 4 ) made from ferrous ammonium sulfate (III) and ferrous ammonium sulfate (II) in a ratio of 3:1 was carried out. The adsorbent is adjusted with the ratio of magnetite and chitosan composition 1:1; 1:2 and 2:1 with the help of glutaraldehyde as a crosslinker. The results showed that the ratio of the ideal composition is 1:1 with % absorption that is 94.97% in 24 hour, and the optimum pH is obtained at pH 5 with % absorption of 92.18% for Pb 2+ ions.   UR - http://jurnal.kimia.fmipa.unmul.ac.id/index.php/JA/article/view/1146