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投稿时间：2019-10-28 修订日期：2019-12-31
投稿时间：2019-10-28 修订日期：2019-12-31
中文摘要: 在N,N"-羰基二咪唑(CDI)的偶联作用下,将双硫脲(DTA)修饰在聚丙烯酸接枝聚丙烯(PP-g-AA)纤维表面,得到双硫脲基螯合纤维(PP-g-AA-DTA),并探讨了该螯合纤维对Hg2+的吸附性能。采用FT-IR、XPS、SEM等研究了螯合纤维结构,研究了不同吸附条件对Hg2+吸附的影响以及择性吸附特性。结果表明准二级动力学模型和Langmuir模型可以很好地描述吸附过程,饱和吸附容量为66.40mg/g。该新型螯合纤维可望应用于水体中Hg2+的去除领域。
中文关键词: 螯合纤维,双硫脲,Hg,吸附,机理
Abstract:In this study, a new 2,5-Dithiobiurea (DTA) modified polypropylene fiber grafted acrylic acid (PP-g-AA-DTA) was prepared by CDI for fast and selective removal of Hg2+ from water. The PP-g-AA-DTA fibers were characterized by FT-IR, XPS and SEM, discussing the initial concentration, temperature, pH and adsorption time on the adsorption of Hg2+. The results showed that, the adsorption kinetics followed the pseudo-second-order model and equilibrium data were fitted well with Langmuir isotherms with the maximum adsorption capacity of 66.40mg/g for Hg2+. The chelating fiber held a good of selectivity for Hg2+, and it enhanced the economics of practical applications for the removal of Hg2+ from aqueous solution.
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基金项目:
| 作者 | 单位 | |
| 鲁蓉* | 北京森迈检测科技有限公司 | 2426439419@qq.com |
| Author Name | Affiliation | |
| Lu Rong | Beijing Senmai Testing Technology Co,Ltd,Beijing | 2426439419@qq.com |
引用文本：
鲁蓉.双硫脲基螯合纤维对Hg2+的吸附性能研究*[J].中国无机分析化学,2020,10(1):38-44.
Lu Rong.Research of the adsorption properties of Dithiobiurea-based chelating fiber for Hg2+[J].Chinese Journal of Inorganic Analytical Chemistry,2020,10(1):38-44.
鲁蓉.双硫脲基螯合纤维对Hg2+的吸附性能研究*[J].中国无机分析化学,2020,10(1):38-44.
Lu Rong.Research of the adsorption properties of Dithiobiurea-based chelating fiber for Hg2+[J].Chinese Journal of Inorganic Analytical Chemistry,2020,10(1):38-44.
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