摘要： 以聚丙烯酰胺、甲醛、亚硫酸氢钠、二硫化碳、氢氧化钠为原料，采用化学合成方法制备新型螯合絮凝剂二硫代羧基化磺甲基聚丙烯酰胺（DTSPAM）。以水样中Cu（Ⅱ）的去除率为考察对象，利用Plackett-Burman实验筛选出DTSPAM制备条件中的主要影响因素，再通过最陡爬坡实验确定出各主要影响因素水平值的中心点，并以响应面法（RSM）中的中心复合设计（CCD）对DTSPAM的制备条件进行优化。结果表明，CCD法建立的二次多项式模型回归性显著，且失拟项不显著，决定系数R²为0.995 1，模型拟合性良好。

关键词: 二硫代羧基化磺甲基聚丙烯酰胺, Plackett-Burman实验, 最陡爬坡实验, 响应面法, 含铜废水

Abstract: A new type of chelating flocculant,dithiocarboxyl sulfomethy-polyacrylamide(DTSPAM),has been prepar-ed by chemical synthesis method,using polyacrylamide,formaldehyde,sodium bisulfite,carbon disulfide and sodium hydroxide as raw materials. Taking the removing rate of Cu(Ⅱ) from water samples as the investigation object,the main influencing factors in the preparation of DTSPAM are confirmed by Plackett-Burman experiment,and then the steepest ascent experiments applied to the determination of the level values center of main influencing factors. Finally,the preparation conditions of DTSPAM have been optimized through central composite design(CCD) of response sur-face method(RSM). The results show that the regression of the quadratic polynomial model established by CCD is significant while the lack of fit is not significant. The coefficient of determination(R²) is 0.995 1,and the fitness of the model is good.

Key words: dithiocarboxyl sulfomethy-polyacrylamide, Plackett-Burman experiment, steepest ascent experiment, re-sponse surface method, copper-containing wastewater

中图分类号: 

• TQ314.253