磁性氧化石墨烯纳米复合材料吸附水中硼的研究  

Research on the removal of boron from water using magnetic graphene oxide nanocomposite materials*

作　　者：杨浩锋 吴田辉 张建中 陈思思 朱爽 YANG Hao-feng;WU Tian-hui;ZHANG Jian-zhong;CHEN Si-si;ZHU Shuang(The East China Survey and Design Institude Co.,Ltd.,Power Construction Corporation of China,Hangzhou 311122,China;Huadong Eco-Environmental Engineering Research Institute of Zhejiang Province,Hangzhou 311122,China)

机构地区：[1]中国电建集团华东勘测设计研究院有限公司,浙江杭州311122 [2]浙江省华东生态环境工程研究院,浙江杭州311122

出　　处：《化学工程师》2025年第4期1-7,共7页Chemical Engineer

基　　金：国家重点研发计划项目(SQ2022YFC3200141)。

摘　　要：采用化学共沉淀法制备了一种磁性氧化石墨烯纳米复合材料GO/Fe_(3)O_(4),用于去除水中硼离子,采用红外光谱仪和X射线衍射仪对复合材料结构进行了表征,采用响应面模型研究了pH值、吸附剂用量和吸附时间对硼去除效率的影响。结果表明,上述3个影响因素对硼的去除效率影响显著,除了吸附时间的平方项外,其余交互项和平方项对硼的去除效率影响显著。GO/Fe_(3)O_(4)重复吸附10次后,硼去除效率从94%降低到了92%,下降幅度小于3%,表现出优秀的可重复利用性。硼吸附的最优条件为:pH值为7.49,吸附剂用量为80.46 mg,吸附时间为34.24min,此时硼去除效率最高为97.27%,与实验值97.73%极为接近。当水中有K^(+)、Na^(+)、Mg^(2+)、Ca^(2+)、Mn^(2+)、Cl^(-)、CO_(3)^(2-)、SO_(4)^(2-)共存离子时,硼去除效率依然在93%以上。A magnetic graphene oxide nanocomposite(GO/Fe3O4)was prepared using the chemical co-precipitation method for the removal of boron ions from water.The structure of the composite was characterized by infrared spectroscopy and X-ray diffraction.The effects of pH value,adsorbent dosage and adsorption time on boron removal efficiency were investigated using the response surface model.The results indicated that these three factors had significant effects on the boron removal efficiency.Except for the quadratic term of adsorption time,the interaction and quadratic terms of other factors significantly affected the removal efficiency.After 10 cycles of reuse,the boron removal efficiency of GO/Fe_(3)O_(4) decreased from 94%to 92%,with a reduction of less than 3%,demonstrating excellent reusability.The optimal conditions for boron adsorption were determined as a pH value of 7.49,an adsorbent dosage of 80.46mg,and an adsorption time of 34.24 minutes,under which the maximum boron removal efficiency was 97.27%,which was in close agreement with the experimental value of 97.73%.When K^(+),Na^(+),Mg^(2+),Ca^(2+),Mn^(2+),Cl^(-),CO_(3)^(2-),and SO_(4)^(2-) ions were present in the water,the boron removal efficiency remained above 93%.

关 键 词：磁性氧化石墨烯 海水淡化 硼吸附 响应面 多元线性回归 

分 类 号：TB332[一般工业技术—材料科学与工程]