两性壳聚糖的制备及其处理磷化废水的研究  

Preparation and Application of Amphoteric Chitosan in Treatment of Phosphating Wastewater

作　　者：冒爱荣[1] 刘勇[1] 许琦[1] 蔡照胜[1] 仓辉[1] 郁桂云[1] 

机构地区：[1]盐城工学院化学与生物工程学院,江苏盐城224051

出　　处：《电镀与精饰》2012年第9期43-46,共4页Plating & Finishing

基　　金：江苏省新型环保重点实验室开放课题(AE201026);盐城工学院大学生实践创新训练项目(201140)

摘　　要：以壳聚糖、3-氯-2-羟丙基三甲基氯化铵、氯乙酸为原料,制备了两性壳聚糖。以两性壳聚糖为吸附剂,处理磷化废水。通过单因素实验考察了pH、吸附剂用量、吸附时间和温度等因素对吸附效果的影响,对吸附机理进行了初探。结果表明,室温下最佳吸附工艺条件pH为2.0,ρ(吸附剂)为12.0g/L,吸附t为2.0h。此条件下,两性壳聚糖对磷化废水中锌离子和磷酸根的去除率分别达到78.9%和88.2%。Amphoteric chitosan was prepared by using chitosan,3-chloro-2-hydroxypropyl trimethyl ammo- nium chloride （CTA） and chloroacetic acid. And the prepared amphoteric chitosan was applied as adsor- bent in treatment of phosphating wastewater. Effects of pH value, adsorbent dosage, adsorption time and temperature on the adsorption efficiency were investigated by single-factor experiments, and mechanism of the adsorption was also proposed. Results showed that at room temperature the optimum adsorption condi- tions were pH value of 2.0, adsorbent dosage of 12.0 g/L, adsorption time of 2.0 h. Under these condi- tions, removal rates of the amphoteric chitosan for zinc ion and phosphate in phosphating wastewater could up to 78.9% and 88.2% seoarately.

关 键 词：两性壳聚糖 吸附 磷化废水 

分 类 号：O647.31[理学—物理化学]