聚乙烯亚胺修饰的聚氨酯泡沫对甲基橙和茜素红的吸附性能研究
Adsorption Performance of Polyethyleneimine Modified Polyurethane Foam on Methyl Orange and Alizarin Red
杨玥玥 1刘珈秀 1张梓烜 1张振江 1祝丽荔1
作者信息
- 1. 鲁东大学 化学与材料科学学院,山东 烟台 264039
- 折叠
摘要
制备了聚乙烯亚胺修饰的聚氨酯泡沫(PEI-PUF),考察了合成条件对制备吸附剂性能的影响,研究了PEI-PUF对水溶液中甲基橙和茜素红的吸附性能.研究结果表明:平衡时间为60 min,准一级动力学模型能更好地描述PEI-PUF-30 对甲基橙和茜素红的吸附动力学过程;在酸性条件下PEI-PUF-30 对甲基橙和茜素红的吸附量较大,吸附量随着pH值的增加而降低,PEI-PUF-30 对甲基橙在较宽的pH值范围内(pH<9.8)存在较高的吸附量;Freundlich模型对实验数据的拟合结果较好,PEI-PUF-30 对甲基橙和茜素红的最大吸附量分别为128.28 和98.76 mg·g-1,相比之下对甲基橙有更高的吸附亲和性;随着温度的升高,PEI-PUF-30对甲基橙和茜素红的吸附量增大,表明该过程为吸热反应.
Abstract
Polyethyleneimine modified polyurethane foam(PEI-PUF)was prepared and the synthesis conditions were studied.PEI-PUF was employed for adsorption of methyl orange and alizarin red from aqueous solution.The results are as follows.The equilibrium time was 60 min and pesudo-first-order could describe the adsorption kinetics of methyl orange and alizarin red by PEI-PUF-30 better.The adsorption amount was high at acidic condition for adsorption of methyl orange and alizarin red.With the increase of pH,the adsorption amount decreased.The adsorption amount of methyl orange by PEI-PUF-30 was high over wide pH range(pH<9.8).Freundlich model fitted the adsorption data well.The maximum adsorption capacities of methyl orange and alizarin red were 128.28 and 98.76 mg·g-1,and PEI-PUF-30 showed high affinity to methyl orange.The adsorption amount of methyl orange and alizarin red by PEI-PUF-30 increased with the temperature increase,which indicated that the adsorption process was endothermic.
关键词
聚乙烯亚胺/聚氨酯泡沫/甲基橙/茜素红/吸附Key words
polyethyleneimine/polyurethane foam/methyl orange/alizarin red/adsorption引用本文复制引用
基金项目
国家自然科学基金青年基金(21404053)
出版年
2024
NETL
NSTL
维普
万方数据