湖南大学学报（自然科学版）2016，Vol.43Issue(6)：143-148,6.
不同价态阳离子盐改性沸石吸附氨氮能力差异
Adsorption Ability to Ammonia Nitrogen of Natural Zeolite Modified by the Different Valence State Cationic Salt
摘要
Abstract
Natural clinoptilolite were modified by five different valence state cationic salts .The differ‐ences of adsorption ability to ammonia nitrogen were studied with particle morphology ,channel character‐istic ,cation exchange capacity and adsorption ability to ammonia nitrogen taken as evaluation indexes . EDS test revealed that the metal cation content corresponding to five kinds of modified salts in the clinopti‐lolite will increase with K + increasing most in KCl modified clinoptilolite .The results of specific surface area and pore size distribution test indicated that the specific surface area of KCl modified clinoptilolite de‐creased least ,whereas AlCl3 modified zeolite dropped most .The mesoporous volume of NaCl and KCl modified clinoptilolite increased most ,but macroporous volume reduced most .However the clinoptilolite modified by MgCl2 and CaCl2 showed little change .Cation‐exchange capacity order of the modified zeolite was NaCl>AlCl3 >CaCl2 >MgCl2 >KCl .The ability of clinoptilolite for removing ammonia nitrogen was found to be positive correlation with cation‐exchange capacity ,but there was a big difference in the cation‐exchange capacity of salt modified zeolite with the same valence .The results indicated that the cation va‐lence was not positive correlation with cation‐exchange capacity and ammonia nitrogen removing ability .关键词
沸石/盐改性/阳离子价态/阳离子交换容量/氨氮吸附Key words
clinoptilolite/salt modified/cation valence/cation-exchange capacity/ammonia nitrogen分类
环境科学引用本文复制引用
刘泉利,林海,董颖博,贺银海..不同价态阳离子盐改性沸石吸附氨氮能力差异[J].湖南大学学报（自然科学版）,2016,43(6):143-148,6.基金项目
国家自然科学基金资助项目（51174017），National Natural Science Foundation of China （）
