天然斜发沸石对水中氨氮的吸附研究  

Characteristic Ammonia-Nitrogen Adsorption on Natural Clinoptilolite Zeolite

作　　者：田震[1] 李奕怀[1] 沈娇雯[1] 许中平[1] 邴乃慈[1] 

机构地区：[1]上海第二工业大学环境建设与环境工程学院,上海201209

出　　处：《上海第二工业大学学报》2013年第1期25-30,共6页Journal of Shanghai Polytechnic University

基　　金：上海第二工业大学校基金(No.A20XK11X018和A20XK11X019);高校青年教师培养资助计划(No.edg11008);上海市教育委员会重点学科建设项目(No.J51803)

摘　　要：研究了天然斜发沸石对废水中氨氮的吸附行为,比较了pH值、温度、氨氮浓度等条件对吸附性能的影响。对沸石的吸附等温线用Langmuir和Freundlich模型分析拟合表明,其吸附等温线更符合Langmuir模型;不同pH环境和不同温度下氨氮的吸附量比较表明,适宜的pH值和较低的温度有利于沸石具有较高的吸附量,在温度低于30℃、pH在4～8的范围内,沸石的吸附性量可达2 mg·g^-1以上。The ammonin-nitrogen adsorption on natural clinoptilolite zeolite was investigated,and the adsorption properties at different condition were compared.The adsorption isothermal curve was analyzed according to the Langmuir and Freundlich models.The result showed that the ammonia-nitrogen adsorption on natural clinoptilolite is more suitable to the Langmuir model.The results at different pH value and different temperature indicated that they also have significant influence on the adsorption amount of the zeolite,when the pH value is between 4～8,the adsorption capacity is higher than 2 mg·g^-1.

关 键 词：天然沸石 氨氮 吸附等温线 PH值 吸附量 

分 类 号：X703[环境科学与工程—环境工程]