| 海藻酸镧颗粒除氟研究：吸附剂物性和吸附机理 |
| |
| 引用本文： | 霍亚坤,丁文明,黄霞,徐静年,赵梦华. 海藻酸镧颗粒除氟研究：吸附剂物性和吸附机理[J]. 中国化学工程学报, 2011, 19(3): 365-370 |
| |
| 作者姓名： | 霍亚坤 丁文明 黄霞 徐静年 赵梦华 |
| |
| 作者单位： | 1. College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China;2. School of Environment, Tsinghua University, Beijing 100084, China |
| |
| 基金项目： | Supported by the Major National Science and Technology Special Project on Treatment and Control of Water Pollution(2009ZX07425-006); State Key Laboratory of Environmental Simulation and Pollution Control (09K04ESPCT) |
| |
| 摘 要： | Lanthanum alginate bead is a new, highly active adsorbent. In the present study, we investigated its ad- sorption performance and its adsorption mechanism. The adsorption isotherm for fluoride onto lanthanum alginate b ead fits the Langmuir model well, and the maximum adsorption capacity is 197.2 mg·g-1. X-ray diffraction shows the amorphous nature of lanthanum alginate bead, which allows for better accessibility to fluoride and thus better activity. Infrared spectra of lanthanum alginate bead before and after adsorption confirm its stable skeletal structure. Scanning electron microscopy shows that the dense surface structure of the adsorbent appear cracks after adsorption. T he adsorption mechanism of lanthanum alginate bead is considered as an ion exchange between F- and Cl- or OH-, as verified from the adsorbent and the solution by pH effect, energy dispersive X-ray, and ion chromatography.
|
| 关 键 词： | lanthanum alginate fluoride removal adsorbent characterization adsorption mechanism ion exchange |
| 收稿时间： | 2010-11-23 |
| 修稿时间： | 2010-11-23 |
Fluoride removal by lanthanum alginate bead: adsorbent characterization and adsorption mechanism |
| |
| HUO Yakun,DING Wenming,HUANG Xia,XU Jingnian,ZHAO Menghua. Fluoride removal by lanthanum alginate bead: adsorbent characterization and adsorption mechanism[J]. Chinese Journal of Chemical Engineering, 2011, 19(3): 365-370 |
| |
| Authors: | HUO Yakun DING Wenming HUANG Xia XU Jingnian ZHAO Menghua |
| |
| Affiliation: | 1. College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China;2. School of Environment, Tsinghua University, Beijing 100084, China |
| |
| Abstract: | Lanthanum alginate bead is a new, highly active adsorbent. In the present study, we investigated its adsorption performance and its adsorption mechanism. The adsorption isotherm for fluoride onto lanthanum alginate bead fits the Langmuir model well, and the maximum adsorption capacity is 197.2 mg•g1. X-ray diffraction shows the amorphous nature of lanthanum alginate bead, which allows for better accessibility to fluoride and thus better activity. Infrared spectra of lanthanum alginate bead before and after adsorption confirm its stable skeletal structure. Scanning electron microscopy shows that the dense surface structure of the adsorbent appear cracks after adsorption. The adsorption mechanism of lanthanum alginate bead is considered as an ion exchange between F and Cl or OH, as verified from the adsorbent and the solution by pH effect, energy dispersive X-ray, and ion chromatography. |
| |
| Keywords: | lanthanum alginate fluoride removal adsorbent characterization adsorption mechanism ion exchange |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《中国化学工程学报》浏览原始摘要信息 |
|
点击此处可从《中国化学工程学报》下载免费的PDF全文 |
|
