摘要
饮用水原水中的硝酸盐污染已引起全球广泛关注.为经济高效地去除饮用水中的硝酸盐,通过1,4-二氯甲氧基丁烷和三乙胺分别对聚苯乙烯交联微球进行氯甲基化和胺化反应,制得了一种大孔型强碱性阴离子交换树脂,并利用傅里叶红外光谱法对其化学结构进行了表征.结果表明:制备的离子交换树脂具有良好选择性和再生性,全交换容量为2.4 mmol/g,对硝酸盐静态吸附量为18.34 mg/g,动态吸附量为17.85 mg/g,离子交换柱的穿透时间和泄露时间分别为10 h和12 h,用8%氯化钠反冲再生时间为1 h.
Nitrate pollution in the raw drinking water has caused widespread concern in the world.To develop cost-effective technology to remove the nitrate from raw drinking water,using 1,4-Bis（chloromethoxy） butane and triethylamine,a strong basic anion-exchange resin was prepared via chloromethylation and amination of the crosslinked polystyrene microsphere.The chemical structure of resin was characterized by Fourier Infrared Spectroscopy.The results showed that the resin had the good selectivity and reproducibility,the anion-exchange resin exchange capacity was 2.4 mmol/g,and the static capacity for nitrate adsorption was 18.34 mg/g.During the continuous flow test of anion-exchange column,the dynamic adsorption capacity was 17.85 mg/g,and the through time and leaking time were 10 h and 12 h,respectively.The regeneration time was 1 h by using 8 % sodium chloride solution.
出处
《西安建筑科技大学学报（自然科学版）》
CSCD
北大核心
2014年第5期726-730,共5页
Journal of Xi'an University of Architecture & Technology(Natural Science Edition)
基金
国家"水体污染控制与治理"科技重大专项(2009ZX07212-002-004-003)
住房和城乡建设部2012年科学技术项目计划(2012-7-21)
关键词
离子交换树脂
合成
硝酸盐
吸附效果
anion-exchange resin
synthesis
nitrate
adsorption effect
