碳纳米纤维去除废水重金属锌离子的研究  

Removal of Heavy Metal Zinc Ions from Wastewater by Carbon Nanofibers

作　　者：梁慈祥 LIANG Ci-xiang(Hangzhou Environment Group Co.,Ltd.,Zhejiang Hangzhou 310000,China)

机构地区：[1]杭州市环境集团有限公司,浙江杭州310000

出　　处：《广州化工》2023年第13期191-193,共3页GuangZhou Chemical Industry

摘　　要：研究了碳纳米纤维对Zn(II)的吸附动力学和等温线,考察了pH和离子强度对Zn(II)吸附的影响。结果表明pH影响Zn(II)吸附,而离子强度基本不影响Zn(II)吸附,表明Zn(II)在CNFs上的吸附机理属于内层络合机理。SEM和TEM图分析表明Zn(II)吸附没有改变CNFs的纤维状结构。准二级动力学模型可以很好的拟合Zn(II)在CNFs上吸附的实验数据。与Freundlich模型比较,Langmuir可以更好的拟合CNFs吸附Zn(II)的等温线。研究结果表明碳纳米纤维可以作为废水中重金属离子去除合适的吸附材料。The adsorption kinetics and isotherms of Zn(II)on carbon nanofibers were studied,and the effects of pH and ionic strength on Zn(II)adsorption were investigated.The results showed that pH affected Zn(II)adsorption,while ionic strength basically did not affect Zn(II)adsorption,indicating that the adsorption mechanism of Zn(II)on CNFs belonged to the inner layer complexation mechanism.SEM and TEM analysis showed that Zn(II)adsorption did not change the fibrous structure of CNFs.The quasi second order kinetic model could well fit the experimental data of Zn(II)adsorption on CNFs.Compared with Freundlich model,Langmuir could better fit the isotherm of Zn(II)adsorption by CNFs.The results showed that carbon nanofibers could be used as a suitable adsorbent for the removal of heavy metal ions from wastewater.

关 键 词：碳纳米纤维 重金属离子 吸附机理 

分 类 号：O657.3[理学—分析化学]