A Xanthate functionalized magnetic chitosan nanocomposite (XFMCN) was used for Cd(II) adsorption from high salinity water samples. The Xanthate functionalization was confirmed using the CHNS analysis, showing the sulfur content of 2.28 % in the composition of the nanocomposite. BET surface area of 44.79 m² g⁻¹ was obtained for XFMCN. The functionalization process resulted in a decrease in University of Tehran isotherm model (UT) constant from 6.73 to 1.80 × 10^-3, showing an increased affinity toward cadmium adsorption. The impacts of contact time, the initial concentration of cadmium, adsorbent dosage, pH, temperature, and interfering ions such as Ca²⁺, Mg²⁺, Na⁺, SO₄²⁻, CO₃²⁻, NO₃⁻ were investigated. The highest performance was at a contact time of 60 min and initial pH 7. The xanthate functionalization enhanced the selectivity of the adsorbent. Freundlich, Redlich Peterson, University of Tehran (UT), and Radke-Prausnitzi isotherm models described the equilibrium data well, confirming multilayer adsorption. The maximum equilibrium adsorption capacity was 55 mg g^-1. Intraparticle diffusion and second-order models were suitable for describing the experimental data. Thermodynamics results showed an exothermic and spontaneous process. The adsorbed cadmium ion could easily be desorbed using hydrochloric acid 0.1 mol L⁻¹. The recovery was studied up to five cycles, exhibiting a slight decrease in the adsorbent performance.

黄原酸酯官能化的壳聚糖磁性纳米复合材料（XFMCN）用于从高盐度水样品中吸附Cd（II）。用CHNS分析证实了黄药的官能化，表明在纳米复合材料的组成中硫含量为2.28％。对于XFMCN，获得的BET表面积为44.79 m ²  g ^-1。功能化过程导致德黑兰大学的等温线模型（UT）常数从6.73降低到1.80×10 ^-3，表明对镉吸附的亲和力增加。接触时间，镉的初始浓度，吸附剂的用量，pH，温度和诸如Ca 2 ⁺，Mg 2 ⁺，Na ⁺，SO 3 ^2-等干扰离子的影响，CO 3 ^2-，NO 3 ^-进行了调查。最高的性能是在60分钟的接触时间和初始pH值为7的情况下。黄药的官能化提高了吸附剂的选择性。Freundlich，Redlich Peterson，德黑兰大学（UT）和Radke-Prausnitzi等温模型很好地描述了平衡数据，证实了多层吸附。最大平衡吸附容量为55mg g ^-1。粒子内扩散和二阶模型适合描述实验数据。热力学结果显示出放热和自发的过程。吸附的镉离子可以使用0.1 mol L ^-1的盐酸轻松解吸。研究了多达五个循环的回收率，表现出吸附剂性能略有下降。