磁性纳米材料对水体重金属元素的吸附性研究  

Adsorption of Magnetic Nanomaterials to Heavy Metal Elements in Water

作　　者：李德明[1] LI Deming(School of Enviroment and Chemical Engineering,Anhui Vochtional and Technical College,Hefei 230011,China)

机构地区：[1]安徽职业技术学院环境与化工学院,安徽合肥230011

出　　处：《太原学院学报（自然科学版）》2022年第4期17-21,共5页Journal of TaiYuan University:Natural Science Edition

基　　金：安徽省高校优秀拔尖人才培育资助项目(gxyqZD2017114);安徽省教育厅高校科学研究项目(KJ2019A0987)。

摘　　要：为探讨磁性纳米材料对水体重金属元素的吸附性,制备磁性纳米材料,并将其作为实验样本,通过改变磁性纳米材料加入量、所处环境的氢离子浓度指数和吸附时间,利用原子吸收分光光度计对水体样本中的重金属元素Co^(2+),Pb^(2+)和Cd^(2+)进行测定,对测定结果进行分析,并计算脱除率和吸附率。结果表明,磁性纳米材料在对水体中重金属元素吸附时会受到加入量、所处环境的氢离子浓度指数和吸附时间的影响,对3种重金属元素的吸附效果表现均不相同。在应用磁性纳米材料对水体中含有的Pb^(2+),Co^(2+)和Cd^(2+)等重金属元素吸附时,应当将其加入量控制在0.2~0.4 g范围内,并保证周围环境的氢离子浓度指数为6.5,吸附时间控制在70 min左右,以此确保磁性纳米材料能够达到最理想的吸附效果。Objective:The adsorption of magnetic nanomaterials to heavy metal elements in water was investigated.Method:Magnetic nanomaterials were prepared and used as experimental samples.By changing the amount of magnetic nanomaterials added,the hydrogen ion concentration index and adsorption time of the environment,the heavy metal elements Co^(2+),Pb^(2+)and Cd^(2+)in the water samples were measured by atomic absorption spectrophotometer,and the measurement results were analyzed and calculated to obtain the remove rate and adsorption rate.Result:After completing the experiment,it was found that the adsorption of heavy metal elements in water by magnetic nanomaterials would be affected by the amount of addition,the hydrogen ion concentration index of the environment and the adsorption time,and the adsorption effects of the three heavy metal elements were different.In conclusion:When magnetic nanomaterials are used to adsorb heavy metal elements such as Pb^(2+),Co^(2+)and Cd^(2+)contained in water,the addition amount should be controlled within the range of 0.2 g to 0.4 g,and the hydrogen ion concentration index of the surrounding environment should be guaranteed to be 6.5,and the adsorption time should be controlled at about 70 min to ensure that the magnetic nanomaterials can achieve the best adsorption effect.

关 键 词：磁性纳米材料 水体重金属元素 吸附性 氢离子浓度 

分 类 号：O614[理学—无机化学]