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| 改性沸石对Zn2+的吸附特性研究 | |
| 引用本文： | 胡克伟,贾冬艳,颜丽,关连珠. 改性沸石对Zn2+的吸附特性研究[J]. 中国土壤与肥料, 2011, 0(1): 49-52 |
| 作者姓名： | 胡克伟 贾冬艳 颜丽 关连珠 |
| 作者单位： | 1. 辽宁农业职业技术学院,辽宁,营口,115009;沈阳农业大学土地与环境学院,辽宁,沈阳,110161 2. 辽宁农业职业技术学院,辽宁,营口,115009 3. 沈阳农业大学土地与环境学院,辽宁,沈阳,110161 |
| 摘 要： | 通过间歇震荡平衡法研究了天然沸石及3种改性沸石对Zn2+的吸附特性。研究结果表明,沸石、改性沸石对Zn2+的等温吸附曲线符合Langmuir方程、Freundlich方程、Temkin方程,其中Freundlich方程的拟合性最好,相关系数在0.988～0.999之间。沸石及改性沸石对Zn2+吸附量大小顺序依次为铵改性沸石>钾改性沸石>镁改性沸石>天然沸石。该规律与改性阳离子价数、离子水合半径密切相关。 |
| 关 键 词： | 沸石 改性沸石 锌离子 吸附 |
Effect of natural zeolite and modified zeolite on adsorption of Zn2+ |
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| HU Ke-wei,JIA Dong-yan,YAN Li,GUAN Lian-zhu. Effect of natural zeolite and modified zeolite on adsorption of Zn2+[J]. Soil and Fertilizer Sciences, 2011, 0(1): 49-52 | |
| Authors: | HU Ke-wei JIA Dong-yan YAN Li GUAN Lian-zhu |
| Affiliation: | HU Ke-wei1,2,JIA Dong-yan1,YAN Li 2,GUAN Lian-zhu2(1.Liaoning Agricultural Vocation-Technical College,Yingkou 115009,2.College of Land and Environment,Shenyang Agricultural University,Shenyang 110161) |
| Abstract: | This test has studied the influence of natural zeolite and modified zeolites on the adsorption characteristic of Zn2+ under the conditions of T=25℃ and low concentration of heavy metals.The adsorption isotherm of natural zeolite,modified zeolites to Zn2+ were conformed to the Langmuir equation,the Freundlich equation and the Temkin equation.As for natural zeolite and modified zoelites,the correlation coefficients of Freundlich equation was the highest.The adsorptive capacity order of four kinds of zeolites to the Zn2+ was NH+4-form zeolite>K-form zeolite>Mg-form zeolite>zeolite.The order related closely to the valences and hydrated radius of the coordinated cations. |
| Keywords: | zeolite modified zeolites Zn2 adsorption |
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