Abstract The Fe/CLCh-EDA/β-CD adsorbent was prepared using cross-linked chitosan (CLCh) containing magnetic iron oxide and modified with ethylenediamine (EDA) and β-cyclodextrin (β-CD). This adsorbent was characterized by infrared (IR) spectroscopy, X-ray diffraction (XRD), Raman spectroscopy, Atomic Absorption Spectroscopy (EAA), Scanning Electron Microscopy (SEM), zeta potential and elemental analysis (CHN). The effect of adsorbent dosage, contact time, pH, kinetics, temperature and adsorption thermodynamics were evaluated by the removal of phenol (PHE), p-nitrophenol (PNP) and p-cresol (PCS). The Fe/CLCh-EDA/β-CD presented a maximum adsorption capacity for PHE of 243.08 mg g−1, PNP of 274.24 mg g−1 and PCS of 298.35 mg g−1 (120 min) at pH 6 and 25 °C. The Fe/CLCh-EDA/β-CD can be easily removed from the aqueous solution by magnetization due to its magnetic properties. Thermodynamic parameters indicate that adsorption is spontaneous and exothermic. This adsorbent showed satisfactory results when applied in the treatment of pulp and paper industry effluent that naturally contains phenol, p-nitrophenol and p-cresol and fortified river water samples.

中文翻译：

---

乙二胺和β-环糊精改性磁性交联壳聚糖去除酚类化合物

摘要 以含磁性氧化铁的交联壳聚糖（CLCh）为原料，用乙二胺（EDA）和β-环糊精（β-CD）改性，制备了Fe/CLCh-EDA/β-CD吸附剂。该吸附剂通过红外 (IR) 光谱、X 射线衍射 (XRD)、拉曼光谱、原子吸收光谱 (EAA)、扫描电子显微镜 (SEM)、zeta 电位和元素分析 (CHN) 进行表征。通过去除苯酚 (PHE)、对硝基苯酚 (PNP) 和对甲酚 (PCS) 来评估吸附剂用量、接触时间、pH、动力学、温度和吸附热力学的影响。Fe/CLCh-EDA/β-CD 在 pH 6 和 25 °C 下对 PHE 的最大吸附容量为 243.08 mg g-1，PNP 为 274.24 mg g-1，PCS 为 298.35 mg g-1（120 分钟） . 由于其磁性，Fe/CLCh-EDA/β-CD 可以很容易地通过磁化从水溶液中去除。热力学参数表明吸附是自发的和放热的。该吸附剂用于处理天然含有苯酚、对硝基苯酚和对甲酚的纸浆和造纸工业废水以及强化河水样品时，显示出令人满意的结果。