两种形式RPFC-Ⅰ纤维对Pb(Ⅱ)的吸附研究  

Study on adsorption of Pb(Ⅱ)by two forms of RPFC-Ⅰfiber

作　　者：林清 陈启石[1] 田振邦 王俊 张京京 LIN Qing;CHEN Qishi;TIAN Zhenbang;WANG Jun;ZHANG Jingjing(School of Energy and Environment,Zhongyuan University of Technology,Zhengzhou 450007,China;Institute of Chemistry,Henan Academy of Sciences,Zhengzhou 450000,China)

机构地区：[1]中原工学院能源与环境学院,河南郑州450007 [2]河南省科学院化学研究所有限公司,河南郑州450000

出　　处：《中原工学院学报》2022年第6期12-18,共7页Journal of Zhongyuan University of Technology

基　　金：河南省重大科技专项(181100310100);河南省科学院重大科研项目聚焦项目(220103003)。

摘　　要：主要研究了Na-RPFC-Ⅰ纤维和H-RPFC-Ⅰ纤维对Pb(Ⅱ)的吸附性能。使用傅里叶变换红外光谱(FTIR)技术对吸附前后的H-RPFC-Ⅰ纤维和Na-RPFC-Ⅰ纤维进行表征,结果表明,RPFC-Ⅰ纤维对Pb(Ⅱ)的吸附是羧基和氨基共同作用的结果,羧基占主导地位。通过实验研究了pH值和温度对两种纤维吸附Pb(Ⅱ)的影响;利用实验数据模拟了吸附动力学方程和吸附等温模型;探讨了Na-RPFC-Ⅰ纤维和H-RPFC-Ⅰ纤维的再生性能。结果表明,H-RPFC-Ⅰ纤维和Na-RPFC-Ⅰ纤维吸附Pb(Ⅱ)的最佳pH值分别为4.0~9.0和3.0~9.0,适宜温度范围分别为25~40℃和10~40℃;用准二级动力学模型和Langmiur吸附等温线模型能够很好地描述RPFC-Ⅰ纤维吸附Pb(Ⅱ)的过程;此外,RPFC-Ⅰ纤维还具有良好的再生使用性能。In this paper,the adsorption properties of Na-RPFC-Ⅰfiber and H-RPFC-Ⅰfiber for Pb(Ⅱ)were studied.In the experiment,the H-RPFC-Ⅰfiber and Na RPFC-Ⅰfiber before and after adsorption were characterized by FTIR.The results showed that the adsorption of Pb(Ⅱ)on RPFC-Ⅰfiber was the result of the interaction of carboxyl and amino groups,and the carboxyl group was dominant.Besides,the effects of pH value and temperature change on the adsorption of Pb(Ⅱ)on the two fibers were studied experimentally;the adsorption kinetic equation and adsorption isotherm model were simulated by experimental data;the regeneration properties of Na-RPFC-Ⅰfiber and H-RPFC-Ⅰfiber were discussed.Finally,it showed that the optimum pH values of H-RPFC-Ⅰfiber and Na-RPFC-Ⅰfiber for Pb(Ⅱ)adsorption are 4.0~9.0 and 3.0~9.0 respectively,the suitable temperature ranges of that are 25~40℃and 10~40℃respectively.The quasi second order kinetic model and Langmiur adsorption isotherm model can well describe the adsorption process of Pb(Ⅱ)on RPFC-Ⅰfiber.In addition,RPFC-Ⅰfiber has good cyclic desorption performance.

关 键 词：离子交换吸附 RPFC-Ⅰ纤维 含Pb(Ⅱ)废水 

分 类 号：O647.3[理学—物理化学]