Al Nawah Jawaher Y, El-Khouly Amany S
Department of Chemistry, College of Science, King Faisal University, P.O. Box 400, Al-Ahsa 31982, Saudi Arabia.
Polymers (Basel). 2025 Jan 20;17(2):255. doi: 10.3390/polym17020255.
Industrial wastewater containing heavy metal ions presents serious economic risk to the environment. In this study, a novel compound of aminated cellulose with jeffamine EDR148 was prepared to improve cellulose's adsorptive behavior towards metal ions. This study undertook a straightforward and efficient cellulose modification through homogeneous chlorination in N,N'-butylmethylimidazolium chloride to produce 6-deoxychlorocellulose (Cell-Cl), followed by a reaction with jeffamine EDR148 and ultimately resulting in the formation of aminated cellulose (Cell-Jef148). Structural and chemical characteristics of Cell-Cl and Cell-Jef148 were determined using different techniques. Various adsorption conditions were applied to evaluate the optimal adsorption conditions for the removal of Cu(II), Ni(II), and Pb(II) ions. Cell-Jef48 revealed a greater affinity and higher adsorption efficiency of 480.3, 420.5, and 463.2 mg/g for Cu(II), Ni(II), and Pb(II) ions, respectively. Different kinetics and adsorption isothermal models were studied to investigate the adsorption mechanism and interactions between Cell-Jef148 and metal ions. The results fitted the Langmuir and pseudo-second-order models. Corresponding to the Langmuir model, Cell-Jef148's maximum adsorption capacities were 952.38, 609.76, and 769.23 mg/g for Cu(II), Ni(II), and Pb(II) ions, respectively, with a high correlation coefficient, R, in the range of 0.99575-0.99855. The research results of this study support Cell-Jef148's adsorption of heavy metal ions, and the regeneration of adsorbent highlights the potential applications of cellulose-based materials in wastewater treatment.
含有重金属离子的工业废水对环境构成严重的经济风险。在本研究中，制备了一种新型的胺化纤维素与聚醚胺EDR148的化合物，以改善纤维素对金属离子的吸附行为。本研究通过在N，N'-丁基甲基咪唑鎓氯化物中进行均相氯化，对纤维素进行了直接有效的改性，制备出6-脱氧氯纤维素（Cell-Cl），随后与聚醚胺EDR148反应，最终形成胺化纤维素（Cell-Jef148）。使用不同技术测定了Cell-Cl和Cell-Jef148的结构和化学特性。应用各种吸附条件来评估去除铜（II）、镍（II）和铅（II）离子的最佳吸附条件。Cell-Jef48对铜（II）、镍（II）和铅（II）离子分别表现出更高的亲和力和更高的吸附效率，分别为480.3、420.5和463.2mg/g。研究了不同的动力学和吸附等温线模型，以研究Cell-Jef148与金属离子之间的吸附机理和相互作用。结果符合朗缪尔和准二级模型。根据朗缪尔模型，Cell-Jef148对铜（II）、镍（II）和铅（II）离子的最大吸附容量分别为952.38、609.76和769.23mg/g，相关系数R在0.99575 - 0.99855范围内。本研究的结果支持Cell-Jef148对重金属离子的吸附，吸附剂的再生突出了纤维素基材料在废水处理中的潜在应用。
