[1]许昶雯,王国英,刘吉明,等.制备焙烧Mg/Al水滑石及同时去除水中氟和硬度[J].华侨大学学报(自然科学版),2018,39(5):706-713.[doi:10.11830/ISSN.1000-5013.201712049]
　XU Changwen,WANG Guoying,LIU Jiming,et al.Preparation of Calcined Mg/Al Hydrotalcite and Simultaneous Removal of Fluorine Ions and Hardness in Water[J].Journal of Huaqiao University(Natural Science),2018,39(5):706-713.[doi:10.11830/ISSN.1000-5013.201712049]
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制备焙烧Mg/Al水滑石及同时去除水中氟和硬度()
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《华侨大学学报（自然科学版）》[ISSN:1000-5013/CN:35-1079/N]

卷:
第39卷
期数:
2018年第5期
页码:
706-713
栏目:
出版日期:
2018-09-20

文章信息/Info

Title:
Preparation of Calcined Mg/Al Hydrotalcite and Simultaneous Removal of Fluorine Ions and Hardness in Water
文章编号:
1000-5013(2018)05-0706-08
作者:
许昶雯1; 2;  王国英1;  刘吉明1;  岳秀萍1;  宁舒怡1
1. 太原理工大学 环境科学与工程学院, 山西 太原 030024;2. 滁州学院 地理信息与旅游学院, 安徽 滁州 239000
Author(s):
XU Changwen1; 2;  WANG Guoying1;  LIU Jiming1; YUE Xiuping1;  NING Shuyi1
1. College of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China; 2. College of Geographic Information and Tourism, Chuzhou University, Chuzhou 239000, China
关键词:
焙烧水滑石;  氟离子;  硬度;  吸附动力学;  等温吸附;  共沉淀法
Keywords:
calcined hydrotalcite;  fluoride ions;  hardness;  adsorption kinetics;  isothermal adsorption;  coprecipitation
分类号:
X131.2
DOI:
10.11830/ISSN.1000-5013.201712049
文献标志码:
A
摘要:
通过共沉淀法制备焙烧Mg/Al水滑石(HTCs-400-MgAl),利用X射线衍射(XRD)和傅里叶变换红外线光谱(FTIR)对材料进行表征,研究焙烧水滑石投加的质量浓度、温度、溶液初始pH值、吸附动力学和等温吸附等对吸附效果的影响.结果表明:当焙烧水滑石在最佳投加质量浓度为6 g·L-1时,其在4 h内对初始质量浓度为10 mg·L-1的氟离子和500 mg·L-1的硬度(以CaCO3的质量浓度计算)的吸附量分别为1.57,47.50 mg·g-1;焙烧水滑石吸附氟离子的过程更符合拟二级动力学模型和Langmuir等温吸附模型,其去除机理为结构重建;焙烧水滑石吸附硬度的过程更符合拟二级动力学模型和Freundlich等温吸附模型,其去除机理包括表面吸附和生成沉淀去除.
Abstract:
Calcined Mg/Al hydrotalcite was prepared by co-precipitation method. The materials were characterized by X-ray diffraction(XRD)and Fourier transform infrared(FTIR)spectroscopy. The effects of calcined hydrotalcite dosage, temperature, initial pH value, adsorption kinetics and isothermal adsorption on the adsorption efficiency were studied. The results showed that when the optimum dosage of calcined hydrotalcite was 6 g·L-1, the adsorption of 10 mg·L-1 fluoride ions and 500 mg·L-1 hardness(calculated with CaCO3 mass concentration)was 1.57 and 47.50 mg·g-1 respectively within 4 h. The adsorption process of fluoride ions by calcined hydrotalcite was more consistent with the quasi-second-order kinetic model and Langmuir isothermal adsorption model, and the removal mechanisms included structural reconstruction. The adsorption process of hardness by calcined hydrotalcite was more in line with the quasi-second-order kinetic model and Freundlich isothermal adsorption model, and the removal mechanisms included surface adsorption and precipitation formation.

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备注/Memo

备注/Memo:
收稿日期: 2017-12-22
通信作者: 王国英(1984-),男,副教授,博士,主要从事废水处理的研究.E-mail:wangguoying@tyut.edu.cn.
基金项目: 国家自然科学青年基金资助项目(51408397); 山西省应用基础研究计划项目(201601D102037)http://www.hdxb.hqu.edu.cn
更新日期/Last Update: 2018-09-20