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首页> 外文期刊>Separation and Purification Technology >Removal of phenolic compounds using (2-hydroxyethyl methacrylate/acrylamidopyridine)hydrogel prepared by gamma radiation
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Removal of phenolic compounds using (2-hydroxyethyl methacrylate/acrylamidopyridine)hydrogel prepared by gamma radiation

机译：使用通过γ射线制备的（甲基丙烯酸2-羟乙酯/丙烯酰胺基吡啶）水凝胶去除酚类化合物

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摘要

Hydrophilic copolymers of 2-acrylamidopyridine (AP) and 2-hydroxyethylmethacrylate (HEMA) with different molar ratios were prepared by gamma irradiation-induced copolymerization using ~(60)Co gamma rays of 20 wt.% aqueous solutions of monomer mixtures. The prepared polymers were characterized by FTIR, NMR and TGA analysis. The capacities for the adsorption of phenolic compounds onto the copolymers were found to be 26.7, 12.5 and 8.5 mg/g polymer for phenol, 2,6-dimethylphenol (DMP) and 2,6-di-t-butylphenol (DBP), respectively, using 20% AP copolymer. When the ratio of AP increased to 50% in the copolymer composition the amount of the above mention phenols retained increased significantly to be 35.1, 30.1 and 17.2 mg/g polymer for phenol, 2,6-dimethylphenol (DMP) and 2,6-di-t-butylphenol (DBP), respectively. Increasing the pH of the medium resulted in increasing of the amount of adsorbed phenols by the polymers. The kinetics of the adsorption at different concentration was also investigated.
机译：使用〜（60）Coγ射线的20 wt％单体混合物水溶液，通过γ辐射诱导的共聚反应，制备了不同摩尔比的2-丙烯酰胺基吡啶（AP）和甲基丙烯酸2-羟乙酯（HEMA）的亲水性共聚物。通过FTIR，NMR和TGA分析对制备的聚合物进行表征。发现酚类化合物在共聚物上的吸附能力分别为26.7、12.5和8.5 mg / g聚合物，其中苯酚，2,6-二甲基苯酚（DMP）和2,6-二叔丁基苯酚（DBP） ，使用20％AP共聚物。当AP比例在共聚物组合物中增加到50％时，上述酚的保留量显着增加，对于苯酚，2，6-二甲基苯酚（DMP）和2，6-苯酚的聚合物为35.1、30.1和17.2mg / g聚合物。二叔丁基苯酚（DBP）。增加介质的pH导致聚合物吸附的酚的量增加。还研究了不同浓度下的吸附动力学。

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