摘要
以Ni2 + 离子为印迹分子、环氧氯丙烷为交联剂 ,在菌丝体表面制备出壳聚糖分子印迹树脂 .合成的树脂与纯菌丝体相比 ,吸附容量提高 2倍左右 .优化了制备工艺 。
A new sorbent of heavy metal ion, surface molecular imprinting chitosan(CTS) resin on the surface of mycelium, was prepared by using Ni 2+ as the molecule imprinting agent and epichlorohydrin(EPH) as the crosslinking agent The resin produced has a good adsorption capacity and mechanical strength.The ratio of chitosan, mycelium and EPH was 1 g∶20 g∶0 5 ml. The ratio of the EPH used to crosslink mycelium, crosslink CTS and mix the crosslinked mycelium and crosslinked CTS was 2∶2∶1. The adsorption capacity of the resin was 55 mg·g -1 at initial Ni 2+ concentration 200 mg·kg -1 in the solution and the adsorption capacity increased by 3 times as compared with that of mycelium.Moreover, it had a fast adsorption rate and was less affected by salt concentration in the solution.Its stability was also better than that of mycelium and crosslinked mycelium in the acidic solution.
出处
《化工学报》
EI
CAS
CSCD
北大核心
2004年第6期958-962,共5页
CIESC Journal
基金
国家自然科学基金 (No 2 0 13 60 2 0 )
北京市自然科学基金 (No 2 0 3 2 0 13 )
霍英东教育基金 (No 710 67)
国家高技术研究发展计划 (No 2 0 0 2AA60 12 80 )资助项目~~
关键词
壳聚糖
表面分子印迹
菌丝体
吸附特性
金属离子
chitosan, surface molecular imprint, mycelium, adsorption behavior, metal ion
