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2012•Journal of University of JinanRequires access

Characteristics of Rain Ammonium Adsorption by Natural Clinoptilolite

Zhu Zhong-zhu

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Abstract

Selecting two types of natural clinoptilolite with diameters of 1～1.5 mm and 2～4 mm separately as experimental material,we conduct NH+4-N adsorption isotherms experiment and adsorption kinetics experiment to explore the regularity of zeolite adsorption NH+4-N.The experimental results show that the process of NH+4-N adsorption by natural zeolite is fitted to Freundlich adsorption isotherm.The maximum of NH+4-N adsorption by thin and thick zeolite are 5.83 mg/g and 18.375 mg/g(zeolite),respectively,which prove that fine zeolite's adsorption of NH+4-N in rain is more effective than thick zeolite's.NH+4-N adsorption of thick natural clinoptilolite corresponds to the first-order kinetics equation.The constant of reaction rate is 0.214 23 h-1and the adsorption rate constant is 0.022 212 g·m-2·h-1.

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Selecting two types of natural clinoptilolite with diameters of 1～1.5 mm and 2～4 mm separately as experimental material,we conduct NH+4-N adsorption isotherms experiment and adsorption kinetics experiment to explore the regularity of zeolite adsorption NH+4-N.The experimental results show that the process of NH+4-N adsorption by natural zeolite is fitted to Freundlich adsorption isotherm.The maximum of NH+4-N adsorption by thin and thick zeolite are 5.83 mg/g and 18.375 mg/g(zeolite),respectively,which prove that fine zeolite's adsorption of NH+4-N in rain is more effective than thick zeolite's.NH+4-N adsorption of thick natural clinoptilolite corresponds to the first-order kinetics equation.The constant of reaction rate is 0.214 23 h-1and the adsorption rate constant is 0.022 212 g·m-2·h-1.

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Available abstract

Selecting two types of natural clinoptilolite with diameters of 1～1.5 mm and 2～4 mm separately as experimental material,we conduct NH+4-N adsorption isotherms experiment and adsorption kinetics experiment to explore the regularity of zeolite adsorption NH+4-N.The experimental results show that the process of NH+4-N adsorption by natural zeolite is fitted to Freundlich adsorption isotherm.The maximum of NH+4-N adsorption by thin and thick zeolite are 5.83 mg/g and 18.375 mg/g(zeolite),respectively,which prove that fine zeolite's adsorption of NH+4-N in rain is more effective than thick zeolite's.NH+4-N adsorption of thick natural clinoptilolite corresponds to the first-order kinetics equation.The constant of reaction rate is 0.214 23 h-1and the adsorption rate constant is 0.022 212 g·m-2·h-1.

Key concepts: Clinoptilolite, Zeolite, Adsorption, Freundlich equation, Chemistry, Ammonium, Reaction rate constant, Kinetics

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