安徽农业科学2013，Vol.41Issue(13)：5878-5881,5890,5.
改性沸石对氨氮去除效果与机理研究
Adsorption Effect and Mechanism of the Ammonia Nitrogen by Modified Zeolite
摘要
Abstract
[Objective] The research aimed to study adsorption effect and mechanism of the ammonia nitrogen in wastewater by modified zeolite.[Method] Dephosphorization urine as experimental wastewater,removal effect of the ammonia nitrogen in test wastewater by different modified zeolite (NaCl zeolite,HCl zeolite,HCl-calcination zeolite and HCl-calcination-microwave zeolite) was contrasted,and adsorption mechanism was discussed.[Result] When particle size was during 0.5-1.0 mm,and dosage was 200 g/L,equilibrium adsorption capacity order of the ammonia nitrogen by natural zeolite and 4 kinds of modified zeolite was natural zeolite ＜ saturated NaCl modified zeolite ＜ 5.0％ HCl modified zeolite ＜ 5.0％ HCl-400 ℃ calcination modified zeolite ＜ 5.0％ HCl-400 ℃ calcination-microwave zeolite.Scanning electron microscopy image and mass loss of the zeolite revealed main reason for adsorption difference.That is,different modified methods caused that size and amount of the zeolite pore had significant differences.[Conclusion] 5.0％ HCl-400 ℃ calcination-microwave zeolite had higher adsorption capability.Its equilibrium adsorption capacity was 17.9 mg/g,which was 2.6 times of the natural zeolite.关键词
改性沸石/氨氮/去除效果/吸附机理/扫描电镜Key words
Modified zeolite/ Ammonia nitrogen/ Removal effect/ Adsorption mechanism/ Scanning electron microscopy分类
农业科技引用本文复制引用
温国期,胡正义,刘小宁,孟宪超,朱春游..改性沸石对氨氮去除效果与机理研究[J].安徽农业科学,2013,41(13):5878-5881,5890,5.基金项目
国家科技支撑计划项目(2012BAJ24B06-2B). （2012BAJ24B06-2B）
