微波改造沸石环境材料的表征与脱氮效果  

Characterization and Denitriding Effect of Microwave Modified Zeolite Ecomaterials

作　　者：林海[1] 杨苏[1] 张文通[1] 马麒钧[1] 

机构地区：[1]北京科技大学土木与环境工程学院,北京100083

出　　处：《东北大学学报（自然科学版）》2015年第1期129-133,共5页Journal of Northeastern University(Natural Science)

基　　金：国家自然科学基金资助项目(51174017)

摘　　要：通过添加不同类型助剂对天然沸石进行微波改造制备环境材料,并研究其对再生水中氨氮的去除效果.研究发现,相同的改造条件下,不同助剂的微波沸石对氨氮的去除效果顺序为:乙酸钠微波沸石>Na Cl微波沸石>SDS微波沸石>CTMAB微波沸石>单独微波沸石>原沸石.孔径测试结果显示微波沸石的总孔体积、孔径数量、比表面积均有所提高.通过SEM,XRD等手段对微波改造前后的沸石表征,微波改造过程中助剂的加入使沸石颗粒表面松散度有不同程度的提高,出现了更多的孔道,主衍射峰强度有所减弱,沸石吸附性能提高.Ecomaterials were modified and prepared by adding different additives on natural zeolite with microwave, and the effect of the matrials on removal of ammonia nitrogen was investigated. The results showed that the removal effect of ammonia nitrogen in sequence under the same modification conditions is microwave-assisted zeolite with sodium acetate, microwave- assisted zeolite with NaC1, microwave-assisted zeolite with SDS, microwave-assisted zeolite with CTMAB, microwave-assisted zeolite and natural zeolite. The aperture, pore volume and BET surface area increased after microwave-assisted zeolite with additives. The results of surface characteristics of zeolite were modificated with microwave or without by SEM and XRD indicated that additives can improve particles surface loose degree of zeolite, and there are more channels, the main diffraction peak intensity weakened, adsorption performance of zeolite improved.

关 键 词：沸石 氨氮 微波改造 助剂 再生水处理 

分 类 号：X703.5[环境科学与工程—环境工程]