【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。更多还原

【Abstract】 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.更多还原