Department of Chemical Engineering and Energy, Quchan University of Technology, Quchan, 9477177870, Iran.
Department of Chemical Engineering and Energy, Quchan University of Technology, Quchan, 9477177870, Iran.
Environ Res. 2022 Mar;204(Pt B):111961. doi: 10.1016/j.envres.2021.111961. Epub 2021 Sep 4.
In this study, the ionic liquid (Aliquat-336) and anionic surfactant (cetyltrimethylammonium bromide, CTAB) bi-functionalized chitosan beads were prepared and characterised using different techniques, including FTIR, XRD, SEM, EDS and BET surface area analysis. The characteristic analysis confirmed the successful conjugation of chitosan beads with both surfactant and ionic liquid. The novel fabricated beads (CS-CTAB-AL) were efficiently employed, as a high-performance adsorbent, for the removal of Tartrazine (TZ), an anionic food dye, from polluted water. The optimum adsorption of TZ onto the CS-CTAB-AL was found at 2 g L of adsorbent in the wide pH range of 4-11, whereas just 45 min was required to reach more than 90% adsorption efficiency in the studied conditions. Also, the adsorption and kinetic studies showed that the experimental data well fitted the pseudo-first-order kinetic model and the Langmuir isotherm model. The maximum adsorption capacity of prepared beads was found to be 45.95 mg g at 45 °C. The adsorption properties of enabling CS-CTAB-AL conjugation introduced a new type of adsorbents, exploited the combination of ionic liquid and surfactant capabilities for wastewater treatment.
在这项研究中，制备了离子液体（Aliquat-336）和阴离子表面活性剂（十六烷基三甲基溴化铵，CTAB）双功能化壳聚糖珠，并使用不同的技术进行了表征，包括傅里叶变换红外光谱（FTIR）、X 射线衍射（XRD）、扫描电子显微镜（SEM）、能谱（EDS）和比表面积分析（BET）。特征分析证实了壳聚糖珠与表面活性剂和离子液体的成功结合。新型制备的珠（CS-CTAB-AL）被有效地用作高效吸附剂，用于从污染水中去除食用酸性染料柠檬黄（TZ）。在研究条件下，吸附剂用量为 2 g/L，pH 值范围为 4-11 时，对 TZ 的最佳吸附效果；在研究条件下，只需 45 分钟即可达到超过 90%的吸附效率。此外，吸附和动力学研究表明，实验数据很好地符合准一级动力学模型和朗缪尔等温线模型。在 45°C 时，制备珠的最大吸附容量为 45.95mg/g。CS-CTAB-AL 共轭的吸附性能引入了一种新型吸附剂，利用离子液体和表面活性剂的组合能力进行废水处理。
