Camelthorn, a desert plant, has been utilized as an adsorbent material for the extraction of Hg(II) ions from aqueous solution after grafting with acrylonitrile followed by amination with hydroxylamine hydrochloride in basic medium to obtain aminated hydroximoyl camelthorn (AHCT). AHCT were found to exhibit excellent adsorption capacity over a wide range of Hg(II) concentration. The surface functional groups and morphology of AHCT were determined. The influences of time (0–60 min), pH (2–6), and dose (0.3–8 g/L) were also evaluated. The adsorption data were analyzed using the Langmuit, Freundlich and Temkin tr models at 30 °C using nonlinear regression analysis. The maximum adsorption capacity (q_max) of Hg(II) onto AHCT was 272.9 mg/g at an initial pH of 6 and a temperature of 30 °C and the Freundlich constants, K_F and n, at 30 °C were found to be 25.47 mg/g and 3.2, respectively. The value of n (3.2), which being in the range 0–10 indicate that adsorption of Hg(II) ions onto AHCT is favorable. Various kinetics models including the pseudo-first-order, pseudo-second-order and intraparticle diffusion models have been applied to the experimental data to predict the adsorption kinetics. Kinetic study was carried out by varying initial concentration of Hg(II) at constant temperature and it was found that pseudo-second-order rate equation was better obeyed than pseudo-first-order and intraparticle diffusion supporting that chemisorption process was involved. The examination of R² values and error analysis method (ARE) showed that the Langmuir model provide the best fit to experimental data than other isotherms and follow the following order: Langmuir > Freundlich > Temkin. The results revealed that the AHCT-Hg(II) ions adsorption system was promoted by the high density of active sites and the adsorption process is independent of the adsorbent surface area. Consequently, AHCT residues can offer an effective method of Hg (II) ion removal from aqueous solutions, demonstrating its potential role in water remediation processes.

骆驼刺是一种沙漠植物，已被用作吸附剂，用于在与丙烯腈接枝后在碱性介质中用盐酸羟胺胺化，从而从水溶液中提取Hg（II）离子，从而获得氨化羟肟基骆驼刺（AHCT）。发现AHCT在很宽的Hg（II）浓度范围内都具有出色的吸附能力。测定了AHCT的表面官能团和形态。还评估了时间（0-60分钟），pH（2-6）和剂量（0.3-8 g / L）的影响。使用Langmuit，Freundlich和Temkin tr模型在30°C下使用非线性回归分析法分析吸附数据。最大吸附量（q _maxHg（II）在AHCT上的初始pH为6，温度为30°C时为272.9 mg / g，在30°C时的Freundlich常数K _F和n为25.47 mg / g和3.2 ， 分别。n（3.2）的值在0至10的范围内，表明Hg（II）离子在AHCT上的吸附是有利的。包括拟一阶，拟二阶和粒子内扩散模型在内的各种动力学模型已应用于实验数据，以预测吸附动力学。通过在恒定温度下改变Hg（II）的初始浓度进行动力学研究，发现拟二级速率方程比拟一级和粒子内扩散更好地服从，支持了化学吸附过程。R ²的检查值和误差分析方法（ARE）表明，Langmuir模型与其他等温线相比，对实验数据的拟合最佳，并且遵循以下顺序：Langmuir> Freundlich> Temkin。结果表明，高活性位点促进了AHCT-Hg（II）离子的吸附体系，且吸​​附过程与吸附剂表面积无关。因此，AHCT残留物可提供一种从水溶液中去除Hg（II）离子的有效方法，证明了其在水修复过程中的潜在作用。