Titanium(IV) hydrate based on chitosan template for defluoridation from aqueous solution
文献类型：期刊论文
| 作者 | Liu, Jie; Li, Wan-Yi; Liu, Yunguo; Zeng, Qinghui; Hong, Song |
| 刊名 | APPLIED SURFACE SCIENCE
 |
| 出版日期 | 2014 |
| 卷号 | 293期号:1页码:46-54 |
| 关键词 | Fluoride sorption Chitosan Biocomposites Titanium hydrate Nonlinear |
| ISSN号 | 0169-4332 |
| 中文摘要 | A cost effective bio-adsorbent, titanium(IV) hydrate based on chitosan template (Ti-CHI), was synthesized using Ti(SO4)(2) and chitosan for defluoridation from aqueous solutions. The Ti-CHI material was characterized using FUR, SEM with EDX, XRD, XPS and Zeta potential. The adsorption kinetics of fluoride onto Ti-CHI followed pseudo-second-order and intra-particle diffusion models. The Ti-CHI was effective for defluoridating systems with low fluoride concentrations (4.52 mg/L), exhibiting a 87.50% removal rate and permitting a residual fluoride concentration (0.55 mg/L). The most stable pH range for fluoride removal was from 4 to 9. After combining the results of pH effects, FTIR and Zeta potential, the-NH groups and Ti-OH groups were revealed as the fluoride adsorption sites on Ti-CHI. In addition, the carbonate ions present in the aqueous solutions adversely impact the fluoride adsorption. The Langmuir, Freundlich, and Langmuir-Freundlich models were used to illustrate the isotherms of the adsorption process. The adsorption of fluoride onto Ti-CHI fits the Langmuir and Langmuir-Freundlich isotherm models well. The maximum adsorption capacity for fluoride on the Ti-CHI was 16.12 mg/g. Thermodynamic studies revealed that the adsorption process was spontaneous. (C) 2013 Elsevier B.V. All rights reserved. |
| WOS记录号 | WOS:000330576600006 |
| 公开日期 | 2015-03-26 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/9611]  |
| 专题 | 生态环境研究中心_环境化学与生态毒理学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Liu, Jie,Li, Wan-Yi,Liu, Yunguo,et al. Titanium(IV) hydrate based on chitosan template for defluoridation from aqueous solution[J]. APPLIED SURFACE SCIENCE,2014,293(1):46-54. |
| APA | Liu, Jie,Li, Wan-Yi,Liu, Yunguo,Zeng, Qinghui,&Hong, Song.(2014).Titanium(IV) hydrate based on chitosan template for defluoridation from aqueous solution.APPLIED SURFACE SCIENCE,293(1),46-54. |
| MLA | Liu, Jie,et al."Titanium(IV) hydrate based on chitosan template for defluoridation from aqueous solution".APPLIED SURFACE SCIENCE 293.1(2014):46-54. |
入库方式： OAI收割
来源：生态环境研究中心
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