Villa-Reyna Ana-Laura, Aguilar-Martínez Milagros, Ochoa-Terán Adrián, Santacruz-Ortega Hisila, Leyva-Peralta Mario-Alberto, Vargas-Durazo Judas-Tadeo, Salazar-Gastelum Moisés I, García-Elías José, Gálvez-Ruiz Juan-Carlos
Departamento de Ciencias Químico Biológicas y Agropecuarias, Universidad de Sonora, Avenida Universidad e Irigoyen S/N, Col. E. Ortiz, Caborca 83600, Mexico.
Tecnológico Nacional de México/Instituto Tecnológico de Tijuana, Blvd. Alberto Limón Padilla S/N, Otay Tecnológico, Tijuana 22510, Mexico.
Polymers (Basel). 2023 Jun 22;15(13):2778. doi: 10.3390/polym15132778.
We evaluate the effectiveness of chelating resins (CR) derived from Merrifield resin (MR) and 1,2-phenylenediamine (PDA), 2,2'-dipyridylamine (DPA), and 2-(aminomethyl)pyridine (AMP) as adsorbent dosimeters for Ag, Cu, Fe, and Pb cations from water under competitive and noncompetitive conditions. MR-PDA, MR-DPA, and MR-AMP were obtained in a 95-97% yield and characterized by IR, fluorescence, and SEM. The ability of CRs as adsorbents was determined by batch and flow procedures. MR-PDA showed a batch adsorption capacity order of Fe (29.8 mg/g) > Ag (2.7 mg/g) > Pb (2.6 mg/g) at pH 3.4. The flow adsorption showed affinity towards the Ag cation at pH 7 (18.4 mg/g) and a reusability of 10 cycles. In MR-DPA, the batch adsorption capacity order was Ag (9.1 mg/g) > Pb (8.2 mg/g) > Cu (3.5 mg/g) at pH 5. The flow adsorption showed affinity to the Cu cation at pH 5 (2.2 mg/g) and a reuse of five cycles. In MR-AMP, the batch adsorption capacity was Ag (17.1 mg/g) at pH 3.4. The flow adsorption showed affinity to the Fe cation at pH 2 (4.3 mg/g) and a reuse of three cycles. The three synthesized and reusable CRs have potential as adsorbents for Ag, Cu, Fe, and Pb cations and showed versatility in metal removal for water treatment.
我们评估了由 Merrifield 树脂（MR）与 1,2 - 苯二胺（PDA）、2,2'- 联吡啶胺（DPA）和 2 -（氨甲基）吡啶（AMP）衍生而来的螯合树脂（CR）作为吸附剂量计在竞争和非竞争条件下对水中银、铜、铁和铅阳离子的吸附效果。MR - PDA、MR - DPA 和 MR - AMP 的产率为 95 - 97%，并通过红外光谱、荧光光谱和扫描电子显微镜进行了表征。通过分批和流动程序测定了 CR 作为吸附剂的能力。在 pH 为 3.4 时，MR - PDA 的分批吸附容量顺序为铁（29.8 mg/g）> 银（2.7 mg/g）> 铅（2.6 mg/g）。流动吸附在 pH 为 7 时对银阳离子具有亲和力（18.4 mg/g），并且可重复使用 10 个循环。在 MR - DPA 中，在 pH 为 5 时，分批吸附容量顺序为银（9.1 mg/g）> 铅（8.2 mg/g）> 铜（3.5 mg/g）。流动吸附在 pH 为 5 时对铜阳离子具有亲和力（2.2 mg/g），并且可重复使用 5 个循环。在 MR - AMP 中，在 pH 为 3.4 时，分批吸附容量为银（17.1 mg/g）。流动吸附在 pH 为 2 时对铁阳离子具有亲和力（4.3 mg/g），并且可重复使用 3 个循环。这三种合成的可重复使用的 CR 具有作为银、铜、铁和铅阳离子吸附剂的潜力，并且在水处理的金属去除方面表现出多功能性。
