Abstract Simultaneous removal of radiocobalt and manganese by adsorption onto polyacrylonitrile/hexadecyltrimethylammonium bromide/potassium copper hexacyanoferrate (PAN/HDTMA/KCuHCF) composite was studied. The synthesized composite was characterized by Fourier-transformed infrared (FT-IR), thermogravimetric analysis (TGA) and X-ray diffraction (XRD). The influence of the solution pH was studied in the range 1.5–7.8 and the results showed the effectiveness of the synthesized composite for simultaneous adsorption of radiocobalt and manganese in the pH range 2.5–6 at an adsorbent mass of 4 g/L. Adsorption kinetic data of manganese at the studied concentrations were best fitted by pseudo-second-order kinetic model and the diffusion study showed that the adsorption process was controlled by film diffusion. Thermodynamic parameters (ΔGo, ΔHo and ΔSo) were estimated and the results indicated that adsorption processes of the concerned (radio)toxicants were spontaneous and endothermic in nature. Of the studied isotherm models, Freundlich and Langmuir were the best ones for describing the adsorption isotherm data of radiocobalt and manganese, respectively. The adsorption capacity of PAN/HDTMA/KCuHCF was found to be 23.629 (for radiocobalt) and 62.854 (for manganese). Desorption of Radiocobalt and manganese loaded onto PAN/HDTMA/KCuHCF composite was studied using various desorbing agents at different concentrations.

中文翻译：

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使用 PAN/HDTMA/KCuHCF 复合材料通过间歇吸附法从二元水溶液中有效去除放射性钴和锰

摘要 研究了通过吸附在聚丙烯腈/十六烷基三甲基溴化铵/六氰基铁酸铜钾（PAN/HDTMA/KCuHCF）复合材料上同时去除放射性钴和锰。通过傅里叶变换红外光谱（FT-IR）、热重分析（TGA）和X射线衍射（XRD）对合成的复合材料进行表征。研究了溶液 pH 在 1.5-7.8 范围内的影响，结果表明合成的复合材料在 2.5-6 的 pH 范围内以 4 g/L 的吸附剂质量同时吸附放射性钴和锰的有效性。研究浓度下锰的吸附动力学数据最适合拟二级动力学模型，扩散研究表明吸附过程受薄膜扩散控制。热力学参数 (ΔGo, ΔHo 和 ΔSo) 被估计，结果表明相关（放射性）毒物的吸附过程在本质上是自发的和吸热的。在研究的等温线模型中，Freundlich 和 Langmuir 分别是描述放射性钴和锰吸附等温线数据的最佳模型。发现 PAN/HDTMA/KCuHCF 的吸附容量为 23.629（对于放射性钴）和 62.854（对于锰）。使用不同浓度的各种解吸剂研究了负载在 PAN/HDTMA/KCuHCF 复合材料上的放射性钴和锰的解吸。Freundlich 和 Langmuir 分别是描述放射性钴和锰的吸附等温线数据的最佳人选。发现 PAN/HDTMA/KCuHCF 的吸附容量为 23.629（对于放射性钴）和 62.854（对于锰）。使用不同浓度的各种解吸剂研究了负载在 PAN/HDTMA/KCuHCF 复合材料上的放射性钴和锰的解吸。Freundlich 和 Langmuir 分别是描述放射性钴和锰的吸附等温线数据的最佳人选。发现 PAN/HDTMA/KCuHCF 的吸附容量为 23.629（对于放射性钴）和 62.854（对于锰）。使用不同浓度的各种解吸剂研究了负载在 PAN/HDTMA/KCuHCF 复合材料上的放射性钴和锰的解吸。