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Glycidol-functionalized macroporous polymer for boron removal from aqueous solution
Reactive & Functional Polymers ( IF 5.1 ) Pub Date : 2020-03-02 , DOI: 10.1016/j.reactfunctpolym.2020.104543
Qinglong Luo , Meiting Zeng , Xueying Wang , He Huang , Xuefeng Wang , Na Liu , Xueli Huang

This study describes two boron sorbents: P(GMA-co-TRIM)-EN-PG and P(GMA-co-TRIM)-TETA-PG. These absorbents were prepared by grafting glycidol onto P(GMA-co-TRIM) with different amounts of amino and imino groups. The structure was characterized using FT-IR, SEM and the water contact angle (WCA). The two adsorbents contain a large number of hydroxyl groups and are defined as nanomaterials. The adsorption of boron by the two adsorbents was investigated by determining the effects of pH, the initial boron concentration, adsorption time, ion competition and cycle life. Isothermal adsorption data were combined with the Langmuir adsorption isotherm model, and the adsorption kinetics were well fitted to the second-order kinetic model. The adsorption equilibrium was achieved within 60 min, and the maximum amounts of boron adsorbed were 29.22 mg/g and 23.25 mg/g, respectively. The presence of Na+, Mg2+, Ca2+, K+, Cl, SO42− and NO3 ions had little effect on boron adsorption. After five consecutive adsorption-desorption cycles, the two adsorbents showed good reuse performance. These two promising adsorbents are useful for removing boron from aqueous solutions.



中文翻译:

缩水甘油官能化的大孔聚合物,用于从水溶液中脱除硼

这项研究描述了两种硼吸附剂:P(GMA-co-TRIM)-EN-PG和P(GMA-co-TRIM)-TETA-PG。这些吸收剂的制备方法是将缩水甘油接枝到具有不同数量氨基和亚氨基的P(GMA-co-TRIM)上。使用FT-IR,SEM和水接触角(WCA)对结构进行表征。这两种吸附剂含有大量的羟基,被定义为纳米材料。通过测定pH,初始硼浓度,吸附时间,离子竞争和循环寿命的影响,研究了两种吸附剂对硼的吸附。将等温吸附数据与Langmuir吸附等温线模型相结合,并将吸附动力学与二阶动力学模型很好地拟合。60分钟内达到吸附平衡,硼的最大吸附量为29.22 mg / g和23。25 mg / g。Na的存在+,镁2+,钙2+,K +,氯-,SO 4 2-和NO 3 -离子对硼的吸附的影响不大。经过五个连续的吸附-解吸循环后,两种吸附剂显示出良好的重复使用性能。这两种有希望的吸附剂可用于从水溶液中去除硼。

更新日期:2020-03-02
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