天然沸石负载壳聚糖去除废水中铜离子的研究  

Treatment of Copper(Ⅱ) in Wastewater by Natural Zeolite-chitosan Compound Adsorbent

作　　者：李增新[1] 梁强[1] 段春生[1] 张良[1] 

机构地区：[1]青岛大学师范学院化学系,青岛266071

出　　处：《非金属矿》2007年第1期57-59,共3页Non-Metallic Mines

基　　金：青岛市科技发展计划项目(项目编号:05-1-NS-58)

摘　　要：将80目天然沸石与90%脱乙酰度壳聚糖的0.5%醋酸溶液混合,制成颗粒吸附剂,用于去除废水中Cu2+。最佳工艺条件是:壳聚糖与天然沸石质量比为1∶20,颗粒吸附剂用量为15 g/L,废水中Cu2+质量浓度不大于300mg/L,pH值为6～8,吸附平衡时间为8h,对Cu2+的去除率为99%。天然沸石-壳聚糖复合吸附剂与活性炭吸附剂相比,吸附效果相近,成本仅为其1/6;与单一的天然沸石或壳聚糖相比,该吸附剂对Cu2+的吸附能力强,成本低。A compound adsorbent was prepared with the combination of chitosan and natural zeolite, 80 mesh natural zeolite was added in chitosan slurry of 90% the degree of deacetylation to prepare adsorbent which mass ratio is 1 ： 1.2.Its adsorptivity toward Cu^2＋ was studied and results showed that the dosage oftbe adsorbent isis g/L, the mass concentration of Cu（ Ⅱ ） in wastewater does not exceed 300 mg/L, the pH value is 6-8. the adsorption equilibrium time is about 8 h and Cu（ Ⅱ ） removal efficiency is 99%. Compared with the single granular activated carbon or zeolite or chitosan, the adsorbent has a faster adsorption speed, a better adsorbility and low cost price.

关 键 词：天然沸石 壳聚糖吸附剂 铜离子 废水处理 

分 类 号：X703[环境科学与工程—环境工程]