In this study, two different polymers have been synthesized and introduced as adsorbents to study their performances in the removal of Fe(III) ions and phenol from wastewater. The polymers have been synthesized by mixing acrylic acid, acryl amide, and N,N-dimethylacrylamide. This is both used as a primary polymer and grafted with graphene oxide as modified polymer to compare their performances in Fe(III) ions and phenol removal. The structure and morphology of the polymer and the grafting polymer with GO were characterized by FT-IR, SEM, and TEM. The effects of pH, time, contact temperature, and dosage of adsorbent were evaluated. From the obtained results, the optimum condition of the adsorption process was concluded to be a concentration of graphene oxide/polymer (1 g L⁻¹) and polymer (3 g L⁻¹) at an ion concentration of 75 ppm, pH 8 for 2 h. The highest removal rates for Fe³⁺ and phenol were 92–98% and 86–89%, respectively. The Freundlich and Langmuir adsorption isotherm model was studied. The removal of Fe³⁺ and phenol is consistent with a pseudo-second-order model, meaning physical adsorption occurs on the surface of both polymers. Other isotherm models, like Temkin and intra-particle, were used; the error function was calculated to test the fitness of all the models’ results. Adsorption was not consistent with the last two models and the result from the error function proved that the pseudo-second-order model is favorable for the removal of Fe(III) and phenol.

在这项研究中，已经合成了两种不同的聚合物，并引入了它们作为吸附剂，以研究它们在去除废水中的Fe（III）离子和苯酚方面的性能。通过混合丙烯酸，丙烯酰胺和N，N-二甲基丙烯酰胺来合成聚合物。这既用作主要聚合物，又接枝了氧化石墨烯作为改性聚合物，以比较它们在Fe（III）离子和去除苯酚方面的性能。用FT-IR，SEM和TEM表征了GO和接枝聚合物的结构和形貌。评估了pH，时间，接触温度和吸附剂用量的影响。从获得的结果中，可以得出吸附过程的最佳条件是氧化石墨烯/聚合物的浓度（1 g L^-1）和聚合物（3 g L ^-1）在离子浓度为75 ppm，pH 8的条件下放置2小时。Fe ³⁺和苯酚的最高去除率分别为92–98％和86–89％。研究了Freundlich和Langmuir的吸附等温线模型。Fe ³⁺和苯酚的去除与拟二级模型一致，这意味着物理吸附发生在两种聚合物的表面上。使用了其他等温模型，例如Temkin和粒子内模型；计算误差函数以测试所有模型结果的适用性。吸附与后两个模型不一致，并且误差函数的结果证明伪二级模型有利于Fe（III）和苯酚的去除。