多孔多胺化壳聚糖印迹微球对Cu^(2+)的吸附性能  

Adsorption Performance of Porous Amination Chitosan Imprinting Microspheres on Cu^(2+)

作　　者：毕韶丹[1] 马晓杰[1] 李志华[1] 郭静[1] 刘俊梅[1] 

机构地区：[1]沈阳理工大学环境与化学工程学院,辽宁沈阳110159

出　　处：《沈阳理工大学学报》2014年第5期38-41,共4页Journal of Shenyang Ligong University

摘　　要：在壳聚糖微球上引入孔隙和多胺化基团,以Cu2+为印迹分子、戊二醛为交联剂,采用离子印迹技术制备多孔多胺化壳聚糖印迹微球(AP-CSMIP),研究其对Cu2+的吸附性能。结果表明,AP-CSMIP对Cu2+的吸附条件为:pH=5.0,300mg/L的Cu2+溶液25mL,吸附剂投加量为0.07g,振荡吸附8h,吸附量可达到48.46mg/g;AP-CSMIP对Cu2+的吸附更好地符合准二级动力学模型,吸附由化学反应控制,而非扩散控制;与非印迹吸附剂相比,AP-CSMIP的吸附量大大提高,具有较高的实用价值。Pores and polyamine group were Introduced in the chitosan microspheres. Amin- ated porous chitosan imprinting microspheres （AP-CSM/P） were prepared by ion imprint- ingtechnology, which was based on Cu2＋ as imprinted ions and glutaraldehy as cross-linking agent and evaluated the adsorption conditions on Cu2＋. The results showed that the maxi- mum adsorption capacity for Cu2＋ was 48.46mg/g at initial concentration of Cu2＋ solution 300mg/L 25mL, pH = 5.0 for 8h by 0. 07gAP-CSMIP. The adsorption of AP-CSMIP on Cu2＋ could be fitted with a pseudo-second order equation which was controlled by chemical reaction, rather than spread control. Compared with non-imprinted adsorbents, AP-CSMIP gets a higher adsorption capacity and better practical value.

关 键 词：壳聚糖 印迹 铜 吸附 

分 类 号：X52[环境科学与工程—环境工程]