摘要
以壳聚糖为原料,以聚乙二醇(PEG)双缩水甘油醚为交联剂,合成了一种新型凝胶树脂.并研究了其对金属离子Cu(Ⅱ),Ni(Ⅱ),Co(Ⅱ)的静态吸附性能,测定了吸附等温线和吸附动力学曲线.结果表明,该吸附剂对Cu(Ⅱ)离子具有较强的吸附能力;在CU(Ⅱ),Ni(Ⅱ),Co(Ⅱ)三种离子共存时,能选择吸附Cu(Ⅱ),其选择系数分别为K_(Cu)^(2+)/Ni^(2+)=4.29和K_(Cu)(2+)/Co(2+)=6.68.
A new-type gel resin based on chitosan was prepared using PEG bisglycidyl ether as crosslinking agent. Its static adsorption properties for metal ions [Cu (Ⅱ ), Ni ( Ⅱ ), Co( Ⅱ )],such as adsorption isotherm and adsorption kinetic curve were determined. The experimental results show that this adsorbent has high selectivity for adsorption of Cu ( Ⅱ ) in the coexistence of Ni ( Ⅱ ), Co ( Ⅱ ). The selectivity coefficients are KCu,2+(Ⅱ)/Ni2+(Ⅱ) = 4. 29 and KCu2+(Ⅱ)>co2+(Ⅱ) = 6. 68,respectively.
出处
《环境化学》
CAS
CSCD
北大核心
1996年第1期41-46,共6页
Environmental Chemistry
关键词
壳聚糖
吸附剂
制备
铜离子
吸附
natural macromolecule ,chitosan,adsorbent,preparation,copper( Ⅱ )ion.
