不同沸石吸附铅离子的对比研究

Abstract

Abstract: It is a highly effective and reusable method for removal of metal ions in water using zeolites as absorbents.Adsorption performances of ZSM-5,Y,and Beta three different zeolites on Pb²⁺ were comparatively studied.Effects of zeolite dosage,pH,adsorbing time,and initial Pb²⁺ concentration on the adsorbing ratio of Pb²⁺ were investigated,respectively.Results showed Beta zeolite performed the best under the same conditions.A 94.4% of Pb²⁺ adsorbing ratio was obtained at the conditions of 4 g/L of adsorbent dosage,6 of pH,and 140 min of adsorbing time.The relatingships between the absorbing capacity and equilibrium mass concentration for the three zeolites were all in good accordance with the isothermal adsorption equations of Freundlich and Langmuir,respectively.

Key words: zeolites, Pb²⁺, adsorption, isothermal equations

CLC Number:

TQ134.32

LI Xue-Feng, ZHU Lei, GAO Huan-Xin, CHEN Qing-Ling. Comparative study on adsorbing Pb²⁺ with various zeolites[J]. INORGANICCHEMICALSINDUSTRY, 2011, 43(8): 21-.

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Inorganic Acid-Base-Salt Committee of CIESC

Comparative study on adsorbing Pb²⁺ with various zeolites

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Comparative study on adsorbing Pb²⁺ with various zeolites