摘要
以甲基丙烯酸缩水甘油酯为单体,利用单体聚合法制备了介孔型磁性离子交换树脂(m-MIER),并在表征其基本性状的基础上,初步分析了其对典型藻源含氮有机物(藻蓝蛋白、氨基酸)的去除效能.为便于比较,研究过程中同步进行了磁性离子交换树脂(MIEX~;)的研究.研究结果表明,m-MIER是以氯为交换基团的介孔型材料,其孔径为2~60nm;与MIEX~;相比,m-MIER具有相似的湿视密度、粒径,更丰富的孔隙结构、更大的交换容量(1.15g/cm^3,150~200μm,0.1852cm^3/g,3.16mmol/g Vs 1.20g/cm^3,150~180μm,0.0184cm^3/g,2.23mmol/g);XPS图谱分析结果表明其内核成分主要为Fe3O4,且为季胺型阴离子交换树脂.针对藻源含氮有机物的去除结果表明,m-MIER对藻蓝蛋白、特定氨基酸的去除效果明显优于MIEX~;,且去除效果与氨基酸的种类显著相关.
Mesoporous magnetic ion exchange resin（m-MIER） was synthesized using methyl acrylic glycidyl ester as monomer with the method of monomer polymerization. Its removal performance on the typical dissolved algal organic nitrogen was studied subsequent to some preliminary characterization. Magnetic ion exchange resin（MIEX~;） was studied as a comparison simultaneously. The results showed that the lab synthetic m-MIER was mesoporous with the main pore diameter was from 2nm to 60 nm, chloride was identified as the exchange group. Compared with MIEX~;, m-MIER owned similar wet density, particle size, more abundant pore structure and greater exchange capacity（1.15g/cm^3, 150~200μm, 0.1852cm^3/g, 3.16mmol/g vs, 1.20g/cm^3, 150~180μm, 0.0184cm^3/g, 2.23mmol/g）. The results of XPS indicated that the major component of the core was Fe3O4, and the m-MIER was quaternary ammonium anion exchange resin. The m-MIER exhibited better removal effects on the typical dissolved nitrogen derived algae cells compared with MIEX（R）; and the removal rate was highly relevant with the categories of the dissolved organic nitrogen.
出处
《中国环境科学》
EI
CAS
CSCD
北大核心
2016年第3期727-734,共8页
China Environmental Science
基金
国家自然科学基金(51378174
51438006)
关键词
介孔型磁性离子交换树脂
制备
饮用水
溶解性有机氮
藻蓝蛋白
氨基酸
mesoporous magnetic ion exchange resin
preparation
drinking water
dissolved organic nitrogen
phycocyanin
amino acids
