摘要
研究了壳聚糖对溶液中Mn2 + 、Fe2 + 、Cu2 + 、Zn2 + 4种常见微量金属离子的吸附作用 ,通过吸附率、溶液pH等参数 ,表征了壳聚糖的吸附能力及其对离子的选择性吸附 ,其选择性次序为 :Cu+ 2 >Zn2 + >Fe+ 2 >Mn+ 2 ,为壳聚糖处理污水中的微量金属离子作了探索。
Adsorption capacity of chitosan as an adsorbent for Mn 2+, Fe 2+, Cu 2+, Zn 2+ in aqueous solution was studied. Chelating capability of chitosan was characterized by the adsorption ratio at different solution pH. The study showed that the selectivity for adsorption of metal ions was: Cu 2+> Zn 2+> Fe 2+ >Mn 2+.
出处
《环境科学与技术》
CAS
CSCD
2003年第3期11-12,20,共3页
Environmental Science & Technology
关键词
壳聚糖
金属离子
螯合
chitosan
heavy metal ions
chelation
