摘要
研究并比较了载La(Ⅲ)和载Fe(Ⅲ)大孔氨基膦酸型螯合树脂对饮用水中氟离子的吸附特性。氟在载La(Ⅲ)和载Fe(Ⅲ)的螯合树脂上的吸附不随pH的变化而改变,载金属螯合树脂对氟的饱和吸附容量分别为3.78、3.55mg/g,吸附方式符合Freundlich吸附等温式,代表性竞争离子不影响氟在螯合树脂上的吸附。结果表明载Fe(Ⅲ)和载La(Ⅲ)的螯合树脂是一种有前景的饮水氟去除吸附剂。
The fluoride adsorbing performance of La（Ⅲ）-and Fe（Ⅲ）-carried large pore phosphonoamidic chelating resins in drinking water was studied. It has been found that the adsorption of fluoride on La（Ⅲ）-and Fe （Ⅲ）-carried chelating resins was independent of pH value. Their saturation adsorption capacities reached 3.78mg/g and 3.55mg/g respectively. The adsorption mode followed a Freundlich isotherm, and common foreign ions did not interfere with the fluoride adsorption. It shows that La（Ⅲ）-and Fe（Ⅲ）-carried chelating resins will be promising adsorbents for fluoride removal from drinking water.
出处
《上海环境科学》
CAS
CSCD
北大核心
2004年第3期96-99,共4页
Shanghai Environmental Sciences
基金
国家自然科学基金
编号29977010
关键词
高氟
饮用水
吸附去除
配位体交换
螯合树脂
High fluoride content Drinking water Adsorption removal Ligand exchange Chelating resin
