摘要
以天然斜发沸石为原料,研制硅基沸石滤料,并以硅基沸石滤料作为填料,研究探讨硅基沸石滤料对废水中氨氮的静态吸附作用。对比天然斜发沸石,通过质量浓度与吸附量的Langmuir曲线和Freundlich曲线,对硅基沸石滤料的吸附机理和离子交换性能进行分析。实验表明,自行研制的硅基沸石滤料符合国家标准,对氨氮的静态吸附容量可高达150 mg/g,是其原料天然斜发沸石吸附容量的5倍;硅基沸石滤料对氨氮的静态吸附作用是物理吸附和化学吸附共同作用的结果,在一定的氨氮初始质量浓度范围内,硅基沸石滤料对于氨氮的去除率随着氨氮初始质量浓度的增加而增加,最高可达62.7%,远远高于天然斜发沸石。
The silicon-zeolite filter material is prepared using natural clinoptilolite as raw material. Taking it as additives, we inves- tigated the adsorption ＂of ammonia nitrogen in wastewater on it and analyzed its adsorption mechanism and ion exchanging behavior through Langmuir and Freundlich cures which describe the relation between mass concentration and the amount of adsorption. Experi- mental results show that the silicon-based zeolite filter material follows the national standard, and its static adsorption capacity of ammonia is up to 150 mg/g, which is 5 times that of natural zeolite;the adsorption of ammonia nitrogen on the silicon-based zeolite filter material is the results of physical adsorption and chemical adsorption; in a certain range of initial ammonia concentration, the removal of ammonia by the silicon-based zeolite increases with the increase of initial ammonia concentration,the highest being 62.7% ,which is higher than that of natural zeolite.
出处
《济南大学学报（自然科学版）》
CAS
北大核心
2011年第1期74-78,共5页
Journal of University of Jinan(Science and Technology)
基金
山东省自然科学基金(Y2007F50)
关键词
硅基沸石滤料
氨氮静态吸附
氨氮去除
天然斜发沸石
silicon-based zeolite filter
ammonia adsorption
ammonia-nitrogen removal
natural clinoptilolite
