摘要
通过浸渍 -干燥 -焙烧法制备了负载镧氧化物的稀土吸附剂 ,探讨了该吸附剂对水中氨氮的吸附性能。实验表明 ,制备稀土吸附剂的适宜镧离子浓度为 0 .0 5 m ol/ L ,最佳焙烧温度为 5 0 0℃。同时实验为了探讨改性沸石吸附氨氮的效果 ,采取不同的实验条件进行了研究。结果表明 ,当溶液 p H值为 8~ 10 ,投加量为 4 g/ L ,接触时间在 4 h,氨氮的去除效率可以达到 85 %以上 ,从而为含氨氮废水的处理提供了一条高效、经济的新途径。
By means of maceration-dryness-roast,the author added rare earth oxide to the zeolite,which produced a new absorbent,which has the ability to remove ammonia nitrogen.The results showed that the optimal absorbent manufacture process are based on the following conditions:the zeolite carrier must be soaked in the 0.05 mol/L La 3+ solution and the temperature of toasting must be at 500 ℃.In addition,to explore the removal efficiency of ammonia nitrogen by activated zeo1ites,the author did this study under the different conditions.The experimental results showed that with the pH number that is between 8~10,the total amount being 4 g/L and the reaction time for about 4 hours,the removal efficiency of ammonia nitrogen will be up to 85%,This method has provided a new economical way for the treatment of nitrogen-containing wastewater.
出处
《武汉理工大学学报》
CAS
CSCD
2004年第6期18-20,28,共4页
Journal of Wuhan University of Technology
基金
昆明理工大学学生课外学术科技创新基金
关键词
改性沸石
稀土
氨氮
去除率
activated zeolite
rare earth
ammonia nitrogen
removal efficiency