摘要
探究了D001型树脂对Mn^(2+)的吸附和解吸性能。开展静态吸附实验探究Mn^(2+)吸附等温模型与吸附动力学,在不同的流速、pH值和吸附时间下进行了动态吸附实验,又通过控制再生液流速和浓度研究了树脂对Mn^(2+)的富集程度,并对吸附前后的树脂进行表征测试。结果表明,与Freundlich等温线相比,锰的吸附更符合Langmuir等温线,准一级动力学模型最能模拟锰吸附反应的动力学数据。动态吸附时进样流速保持8 m/h、 pH值为4、吸附时间为270 min吸附效果最好,再生液流速为1.5 m/h,浓度为3 mol/L时Mn^(2+)的富集效果最佳可以达到原样的60倍。最后通过FT-IR证实了锰与磺酸基结合的吸附机理。
This article investigates the adsorption and desorption properties of D001 resin on Mn^(2+).Static adsorption experiments were carried out to investigate the isothermal model and adsorption kinetics of Mn^(2+)adsorption.Dynamic adsorption experiments were conducted at different flow rates,pH values and adsorption times,and the degree of Mn^(2+)enrichment by the resin was also investigated by controlling the flow rate and concentration of regeneration solution,and characterization tests were carried out on the resin before and after adsorption,as well as after several adsorption-regeneration tests of the resin.The results showed that the adsorption of manganese was more consistent with the Langmuir isotherm than the Freundlich isotherm,and that the quasi-primary kinetic model best simulated the kinetic data of the manganese adsorption reaction.The best adsorption effect was achieved at a flow rate of 8 m/h,pH 4,and adsorption time of 270 min,and the best Mn^(2+)enrichment effect was achieved at a regeneration solution flow rate of 1.5 m/h and a concentration of 3 mol/L,which was 60 times that of the original sample.Finally,the adsorption mechanism of manganese binding with sulfonic acid group was confirmed by FT-IR.
作者
宋小三
岳子琳
宋玺琛
刘波
张悦
范吉硕
SONG Xiaosan;YUE Zilin;SONG Xichen;LIU Bo;ZHANG Yue;FAN Jishuo(School of Environmental and Municipal Engineering,Lanzhou Jiaotong University,Lanzhou 730070,China;Ministry of Education Engineering Center for Comprehensive Utilization of Water Resources inCold and Arid Regions,Lanzhou 730070,China)
出处
《功能材料》
CAS
CSCD
北大核心
2024年第3期3144-3149,共6页
Journal of Functional Materials
基金
国家自然科学基金项目(52364055)
甘肃省高等学校科研项目(2020C-38)。
关键词
离子交换
动力学
动态吸附
锰离子
富集
ion exchange
kinetics
dynamic adsorption
manganese ions
enrichment
作者简介
宋小三(1979-),男,教授,硕士生导师,研究方向为废水处理理论与技术,重金属污染治理及回收利用。;通讯作者:宋小三,E-mail:songxs@mail.lzjtu.cn。
