三聚氰胺对银离子的吸附性能
收稿日期: 2005-09-15
修回日期: 2005-09-15
网络出版日期: 2010-10-01
基金资助
复旦大学聚合物分子工程重点实验室基金项目
Adsorptive performance of melamine for silver ions
Received date: 2005-09-15
Revised date: 2005-09-15
Online published: 2010-10-01
黄美荣, 李振宇, 谢芸, 李新贵 . 三聚氰胺对银离子的吸附性能[J]. 工业水处理, 2006 , 26(1) : 36 -39 . DOI: 10.11894/1005-829x.2006年.26(01).36
Melamine, which possesses three free amino groups and three aromatic nitrogen atoms in its molecule, has great potential as an adsorbent for silver ions. The adsorptive properties of melamine for silver ions are mainly studied. The effects of adsorptive time, temperature and solution pH on the adsorptive properties of melamine are discussed. The superior adsorptive performance of melamine for silver ions is revealed. The Ag + adsorption capacity of 50 mg melamine can reach 820mg/g for 25 mL silver nitrate solution with the concentration of 0.042 mol/Lat 30 ℃. Furthermore, melamine also shows a fast adsorptive rate. The adsorptive capacity will be above 91% of the saturated adsorptive capacity after the adsorptive time of half an hour. The advantages of excellent properties for silver ion adsorption as well as its cheapness make the prospect of melamine’s application to the treatment and recovery of waste liquid containing silver ions.
Key words: melamine; silver ion; adsorption
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