This study examined the removal of Pb(II) using magnetic chitosan hydrogel adsorbent from diverse sample waters. Spectrometry was used to track the effects of magnetic acrylamide nanocomposite dose, pH extraction, and contact duration on Pb(II) removal from sample water. This research also looked at adsorption isotherm models for the sorption of Pb(II). The magnetic chitosan hydrogel adsorbent Pb(II) adsorption capability was 31.74 mg/g respectively. The Freundlich isotherm model fits the removal of Pb(II) utilising magnetic chitosan hydrogel adsorbent. In addition, this adsorbent was shown to have a qmax value of 31.74 mg/g of Pb2+ ions, which is considered to be of high efficiency for Pb2+ ion removal. The studied kinetic models have determined that the pseudo-second-order linear model is more suitable to explain the adsorption of lead (II) on magnetic chitosan hydrogel adsorbent. Also, chemical adsorption is the rate-limiting step in the adsorption process of lead (II) ions.

中文翻译：

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通过吸附到真实水样中的纳米 Fe3 O4/壳聚糖-丙烯酰胺水凝胶离子上，从真实水样中回收 Pb2+。

本研究检验了使用磁性壳聚糖水凝胶吸附剂从不同的水样中去除 Pb(II) 的情况。使用光谱测定法追踪磁性丙烯酰胺纳米复合材料剂量、pH 提取和接触时间对样品水中 Pb(II) 去除的影响。这项研究还研究了 Pb(II) 吸附的吸附等温线模型。磁性壳聚糖水凝胶吸附剂对Pb(II)的吸附能力分别为31.74 mg/g。Freundlich 等温线模型适合利用磁性壳聚糖水凝胶吸附剂去除 Pb(II)。此外，该吸附剂的 Pb2+ 离子 qmax 值为 31.74 mg/g，这被认为对 Pb2+ 离子去除效率很高。研究的动力学模型确定准二阶线性模型更适合解释磁性壳聚糖水凝胶吸附剂对铅（II）的吸附。此外，化学吸附是铅 (II) 离子吸附过程中的限速步骤。