Regenerated cellulose films (RCF) were functionalized with bromoacetyl bromide as atom transfer radical polymerization (ATRP) initiator. Then, poly(glycidyl methacrylate), p(GMA), as a functional polymer was grafted via surface initiated ATRP (SI-ATRP) on the RCF. The polymer grafted RCF was modified into phosphate [i.e.,(RCF-g-p(GMA)-PO₃H₂)] and sulfate [i.e.,(RCF-g-p(GMA)-SO₃H)] groups using H₃PO₄ and H₂SO₄, respectively. The synthesized composite adsorbents were characterized using FTIR, SEM and analytical methods to evaluate the structural and morphological characteristics of the modified cellulose based films. The effectiveness of both cation exchange films [(RCF-g-p(GMA)-PO₃H₂) and (RCF-g-p(GMA)-SO₃H)] for the removal and recovery of Chlorazole Black E (CBE) dye was investigated from aqueous solutions. The adsorbent dosage, pH, ionic strength, initial concentration of dye, and contact time were studied to optimize the conditions for maximum adsorption. The adsorption process was pH dependent, shows maximum removal at pH 5.5 and 2.0 for RCF-g-p(GMA)-PO₃H₂ and RCF-g-p(GMA)-SO₃H, respectively. The maximum adsorption capacities were found to be 165.7 and 268.6 mg/g for the RCF-g-p(GMA)-PO₃H₂ and RCF-g-p(GMA)-SO₃H, respectively. Kinetic studies showed that pseudo-second-order kinetic model described well the kinetics of adsorption of the CBE dye. Adsorption equilibrium data were correlated with the Langmuir, and Freundlich isotherm models. Adsorption/desorption for 10 cycles showed the possibility of repeated use of modified RCF for removal and recovery of the dye from aqueous solutions. These presented both cationic adsorbents had several operational advantages for the dye removal from aqueous medium indicating that they are talented materials to be used in wastewater treatment. Finally, the RCF-g-p(GMA)-SO₃H adsorbent with strong acidic groups can be utilized for the removal of basic dyes from industrial wastewaters in sight of its favorable high adsorption capacity.

再生纤维素膜（RCF）用溴乙酰溴作为原子转移自由基聚合（ATRP）引发剂进行功能化。然后，经由表面引发的ATRP（SI-ATRP）在RCF上接枝作为功能聚合物的聚（甲基丙烯酸缩水甘油酯）p（GMA）。聚合物接枝的RCF使用H ₃ PO ₄和H ₂分别被修饰成磷酸根[（RCF-gp（GMA）-PO ₃ H ₂）]和硫酸根[（RCF-gp（GMA）-SO ₃ H）]基。H ₂ SO ₄， 分别。使用FTIR，SEM和分析方法对合成的复合吸附剂进行表征，以评估改性纤维素基薄膜的结构和形态特征。研究了两种阳离子交换膜[（RCF-gp（GMA）-PO ₃ H ₂）和（RCF-gp（GMA）-SO ₃ H）的去除和回收氯唑黑E（CBE）染料的有效性。从水溶液。研究了吸附剂量，pH，离子强度，染料的初始浓度和接触时间，以优化最大吸附条件。吸附过程取决于pH，在RCF-gp（GMA）-PO ₃ H ₂和RCF-gp（GMA）-SO _3的pH 5.5和2.0下显示最大去除量H分别。发现RCF-gp（GMA）-PO ₃ H ₂和RCF-gp（GMA）-SO ₃ H的最大吸附容量分别为165.7和268.6 mg / g 。动力学研究表明，伪二级动力学模型很好地描述了CBE染料的吸附动力学。吸附平衡数据与Langmuir和Freundlich等温线模型相关。吸附/解吸10个循环显示了重复使用改性RCF从水溶液中去除和回收染料的可能性。这些提出的两种阳离子吸附剂在从水性介质中去除染料方面具有多个操作优势，表明它们是用于废水处理的有才华的材料。最后，RCF-gp（GMA）-SO ₃鉴于其良好的高吸附能力，具有强酸性基团的H吸附剂可用于从工业废水中去除碱性染料。