复合絮凝剂聚合氯化铝—壳聚糖中铝形态分布的研究

Study on the species distribution and transformation kinetics of PAC-CTS

制备了无机—有机天然高分子复合絮凝剂聚合氯化铝—壳聚糖(PAC-CTS),并采用A l-F erron逐时络合法研究了壳聚糖(CTS)的粘度(ηCTS)、含量(C)和聚合氯化铝(PAC)的碱化度(B)对无机—有机天然高分子复合絮凝剂PAC-CTS中铝形态分布的影响。结果表明,当B值为1.5和CηTS值为100 m Pa.s时,PAC-CTS与A l-F erron试剂反应速率最高;随着C值的增加,小分子的A l(Ⅲ)聚合物含量越小,PAC-CTS与A l-F erron试剂反应速率也越低。从PAC-CTS中A lb含量可推断PAC-CTS(B=1.5,ηCTS=800 m Pa.s,C=0.05 g/g)的絮凝效果应最佳。

The inorganic-organic composite flocculants PAC-CTS were prepared and the species distribution and Al-Ferron complexation timed spectrophotometric kinetics of PAC-CTS were studied based on different riOTs,different CTS dosages and different Bs. It shows that there are some interactions between CTS and PAC in the composite flocculants.