摘要
本文对氨基膦酸型螯合纤维吸附Hg（Ⅱ）离子的特性进行了研究,考察了溶液平衡pH值对吸附百分率的影响,探讨了此螯合纤维对Hg（Ⅱ）离子的吸附选择性,结果表明:该螯合纤维对Hg（Ⅱ）离子的吸附基本符合Freundlich型等温方程式,并且具有较大的螯合容量和较快的吸附速度,在较低pH值下,对Hg（Ⅱ）离子具有较高的选择性。
The adsorption properties of poly (acrylaminophosphonic) chelating fiber for Hg (Ⅱ) ion were studied. The effects of the equilibrium pH value on adsorption and the selectivity for Hg (Ⅱ) were investigated. The results showed that the adsorption isotherm of Hg (Ⅱ) ion on aminophosphonic chelating fiber was of the Freundlich-type equations in the tested range of Hg (Ⅱ) ion concentrations. This chelating fiber had high selectivity for Hg (II) ion at low pH value and good kinetic properties. The adsorption capacity of Hg (Ⅱ) ion was 1. 25mmol·g-1 at pH = 6. 00.
出处
《环境化学》
CAS
CSCD
北大核心
1998年第3期231-236,共6页
Environmental Chemistry
关键词
氨基膦酸型
螯合纤维
吸附
性能
汞
水体污染
aminophophonic chelating fiber, adsorption properties, Hg (Ⅱ).
