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中国农学通报

中国农学通报 ›› 2006, Vol. 22 ›› Issue (1): 197-197.

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天然沸石与几种改性沸石对NH4+吸附解吸特性的研究

田 雨,胡克伟,路明祥,高 跃,颜 丽,关连珠   

  • 出版日期:2006-01-05 发布日期:2006-01-05

Research on Adsorption and Desorption of NH4+ by Natural Zeolite and Modified Zeolite

Tian Yu, Hu Kewei, Lu Mingxiang, Gao Yue, Yan Li, Guan Lianzhu   

  • Online:2006-01-05 Published:2006-01-05

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摘要： 采用室内分析的方法，研究天然沸石及改性沸石对NH4+的吸附解吸特性。结果表明，K-沸石、Ca-沸石、Mg-沸石和Ba-沸石对NH4+吸附量及解吸量均比天然沸石高，其中K-沸石最高，其它三者相近。H-沸石与天然沸石相比，在低浓度时比天然沸石的吸附（解吸）量高，但是在高浓度时吸附（解吸）量则降低。改性沸石与天然沸石相比，不仅提高了NH4+的吸附，同时还促进了NH4+的解吸，说明K-沸石、Ca-沸石、Mg-沸石和Ba-沸石，既具有较强的保氮能力，又具有较高的氮素供给能力，在生产实践中有着广阔的应用前景。

Abstract: Absorption and desorption of NH4+ by natural zeolite and modified zeolite is studied.Compared with natural zeolite, K – zeolite、Ca – zeolite、Mg-zeolite and Ba-zeolite to the NH4+ is stronger absorption and desorption capacity,and K – zeolite is the greatest. To H-zeolite, low concentration is higher than the natural adsorptive(desorptive) capacity,but high concentration is lower then the natural adsorptive(desorptive). The modified zeolite not only may enhance the adsorption of NH4+, but also may promoted the desorption of NH4+. It shows that modified zeolite not only has strongly guarantees the nitrogen ability, but also high nitrogen supplying ability. So it has broad application prospect in the agricultural practice.