以来源丰富的玉米秸秆、高岭土为原料,以丙烯酸、丙烯酰胺为聚合单体,通过水溶液聚合法制备了复合高吸水树脂,并用红外光谱(FT-IR)和扫描电镜(SEM)对其结构进行了表征分析。利用合成的复合高吸水树脂对含Pb2+模拟废水进行了吸附研究,考察了复合高吸水树脂用量、Pb2+初始浓度、吸附时间和溶液pH及对Pb2+去除率的影响,最优条件下复合高吸水树脂对Pb2+的去除率达88.57%,吸附Pb2+后的复合高吸水树脂经处理后可循环使用。
Using abundant of corn stalks and kaolin as raw materials,acrylic acid and acrylamide as monomers,a composite superabsorbent resin was prepared through aqueous solution polymerization.The structure of as-prepared resin was characterized and analyzed by infrared spectroscopy (FT-IR) and scanning electron microscopy (SEM).The adsorption of the composite superabsorbent resin for simulated wastewater containing Pb2+ was studied,and the effects of composite resin dosage,the initial concentration of Pb2+,adsorption time,and solution pH value on the removal rate of Pb2+ were investigated in detail.The removal rate of composite resin for Pb2+ was 88.57% under the optimal conditions,and the composite resin adsorbed Pb2+ could be recycled after treatment.
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基金资助
河南省青年骨干教师培养项目(2019GZGG068);河南省科技攻关项目(222102320423)
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