铁离子在多齿配体功能化硅胶上的吸附研究

引用本文: 陈鹏, 李蓉, 陈斌. 铁离子在多齿配体功能化硅胶上的吸附研究[J]. 分析化学, 2022, 50(2): 300-309. doi: 10.19756/j.issn.0253-3820.201492 shu

Citation: CHEN Peng, LI Rong, CHEN Bin. Adsorption of Ferric Ion on Multidentate Ligand Functionalized Silica Gel[J]. Chinese Journal of Analytical Chemistry, 2022, 50(2): 300-309. doi: 10.19756/j.issn.0253-3820.201492 shu

铁离子在多齿配体功能化硅胶上的吸附研究

陈鹏 ,
李蓉 ^, ,
陈斌 ^,

西北大学化工学院,西安 710069

通讯作者: 李蓉,E-mail:lirong@nwu.edu.cn; 陈斌,E-mail:chenbin@nwu.edu.cn

基金项目:
国家自然科学基金项目（No.21376191）、陕西省自然科学基金项目（No.2011JM2013）、陕西省教育厅服务地方专项项目（No.14JF027）和陕西省产业化项目（No.2013jc23）资助

摘要: 以自制的多齿配体功能化硅胶为吸附剂，探究了配体齿数对废水中常见重金属离子吸附的影响。研究结果表明，五齿配体亚氨基二琥珀酸-硅胶吸附剂对铁离子(Fe³⁺)的吸附能力最强，吸附量为14.4 mg/g。进一步探讨了此吸附剂对Fe³⁺的吸附动力学和热力学行为，考察了Fe³⁺浓度、温度、转速以及共存离子对吸附的影响，并对吸附剂的重复使用性进行了评价。结果表明，此吸附剂对Fe³⁺的初始吸附行为相对较快，伪二阶模型可以更好地描述吸附剂的吸附动力学；Freundlich等温线模型更适合描述吸附剂的吸附热力学，吸附过程是放热的、非自发的；增大浓度和升高温度均可提高Fe³⁺在IDS-Silica上的吸附量，而转速的提升仅能缩短达到吸附平衡的时间。除Cu²⁺外，其它干扰离子对Fe³⁺的吸附均无明显影响。IDS-Silica对Fe³⁺的吸附具有良好的可重复性。本研究为去除废水中Fe³⁺提供了一种新型高效的吸附材料，同时也为五齿配体亚氨基二琥珀酸螯合吸附材料的开发提供了理论参考。

关键词:

English

Adsorption of Ferric Ion on Multidentate Ligand Functionalized Silica Gel

School of Chemical Engineering,Northwest University, Xi'an 710069, China

Corresponding author: LI Rong, ; CHEN Bin,

Received Date: 14 August 2020
Revised Date: 24 June 2021
Fund Project:
Supported by the National Natural Science Foundation of China (No.21376191), the Natural Science Foundation of Shaanxi Province, China (No.2011JM2013), the Service Local Special Project of Shaanxi Province Education Department (No.14JF027) and the Industrialization Cultivation Item of Shaanxi Province Educational Department (No.2013jc23)

Abstract: The self-made silica gels functionalized with various multidentate ligands were used as adsorbents to explore the effects of ligand dentate numbers on the adsorption of common heavy metal ions in wastewater. Silica gel modified with pentadentate ligand iminodisuccinic acid displayed the highest adsorption capacity of 14.4 mg/g for Fe³⁺. The adsorption kinetics and thermodynamics of this adsorbent were studied, and the influences of concentration of Fe³⁺, temperature, rotation speed and coexisting ions on the adsorption were investigated. The experiment results showed that the adsorbent had a relatively fast initial adsorption behavior for Fe³⁺, and the pseudo-second-order model could better describe the adsorption kinetics of the adsorbent. Freundlich isotherm model was more suitable for describing equilibrium data, and the adsorption process was exothermic and non-spontaneous. Increasing the concentration and temperature could improve the adsorption capacity of Fe³⁺ on IDS-Silica, while increasing speed could shorten time to reach adsorption equilibrium. Other interfering ions had no effects on adsorption of Fe³⁺ except for Cu²⁺. Furthermore, IDS-Silica had good repeatability for adsorption of Fe³⁺. This work provided a new and efficient adsorption material for removing Fe³⁺ in wastewater, and also provided a theoretical reference for developing chelating adsorption material modified with pentadentate ligand iminodisuccinic acid.

Key words:

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沈阳化工大学材料科学与工程学院沈阳 110142

铁离子在多齿配体功能化硅胶上的吸附研究

通讯作者: 李蓉,E-mail:lirong@nwu.edu.cn; 陈斌,E-mail:chenbin@nwu.edu.cn

English

Adsorption of Ferric Ion on Multidentate Ligand Functionalized Silica Gel

Corresponding author: LI Rong, ; CHEN Bin,

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通讯作者: 陈斌, bchen63@163.com

中国化学会秘书处

铁离子在多齿配体功能化硅胶上的吸附研究

通讯作者: 李蓉,E-mail:lirong@nwu.edu.cn; 陈斌,E-mail:chenbin@nwu.edu.cn

English

Adsorption of Ferric Ion on Multidentate Ligand Functionalized Silica Gel

Corresponding author: LI Rong, ; CHEN Bin,

CCS Chemistry：嵌段共聚物自组装成 “三明治”二维有机材料，实现纳米级压力传感功能

CCS Chemistry：颜徐州、鲍哲南： 你的皮肤可能是一片SPMs

CCS Chemistry：工作高效不疲劳，只须让催化剂动起来

CCS Chemistry：静电组装导向聚合- 聚电解质纳米凝胶量化制备新策略

CCS Chemistry：金黄色葡萄球菌醛基脱氢酶是如何识别特异性底物的？

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通讯作者: 陈斌, bchen63@163.com

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