5-溴水杨醛改性壳聚糖的制备及吸附性能  

PREPARATION OF CHTTOSAN MODIFIED BY 5-BROMOSALICYLADEHYDE

作　　者：唐星华[1] 杨晓燕[1] 沈明才[1] 

机构地区：[1]南昌航空工业学院环境与化学工程系,江西南昌330034

出　　处：《水处理技术》2005年第8期25-27,共3页Technology of Water Treatment

基　　金：江西省自然科学基金(0220020)江西省材料科学与工程研究中心基金(KG2002001016)

摘　　要：制备了两种不同形态的改性壳聚糖希夫碱:微粒化的壳聚糖希夫碱(P-CTSS),未微粒化的壳聚糖希夫碱(CTSS),并研究了它们分别对Cu2+,pb2+,Cd2+及Znz+的吸附性能,考察了pH值、时间等因素对吸附性能的影响,结果表明,P-CTSS较CTSS易于粉碎,且吸附性能较好。CTSS对Cu2+,Pb2+,Cd2+及Zn2+的吸附容量分别为:15.21、10.35、12.13、9.28mg/g,而P-CTS对Cu2+,Pb2+,Cd2+及Zn2+的吸附容量分别为:37.46、15.84、16.34、13.67mg/g,P-CTSS对Cu2+的吸附率在2.5h内达到84.5%左右,具有一定的选择性吸附。5-bromosalicyladehyde was synthesized first. Two different modified Schiffbases, the particulate chitosan Schiff base（P-CTSS） and the chitosan Schiffbase （CTSS） ,were prepared. The two Schiffbases were investigated in relation to their adsorption behavior for metal ions such as Cu^2＋,Pb^2＋,Cd^2＋and Zn^2＋ as well as the effects of pH.time on the adsorption behavior.The results indicated that the P-CTSS was more shattery and had higher adsorption capacities than CTSS; the P-CTSS had adsorption capacities of 37.46,15.84,16.34 and 13.64mg/g for Cu^2＋,Pb^2＋,Cd^2＋and Zn^2＋ respectively, and a certain selective adsorption for Cu^2＋.

关 键 词：壳聚糖 5-溴水杨醛 希夫碱 吸附 

分 类 号：TQ424.2[化学工程]