Scientia Agricultura Sinica ›› 2005, Vol. 38 ›› Issue (01): 102-109 .doi: 10.3864/j.issn.0578-1752.at-2004-2322

• SOIL & FERTILIZER·WATER-SAVING IRRIGATION • Previous Articles     Next Articles

Study on Adsorption and Desorption Properties of Nano-kaoline to Nitrogen, Phosphorus, Potash and Organic Carbon

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  1. 土肥所
  • Received:2004-04-19 Revised:1900-01-01 Online:2005-01-10 Published:2005-01-10

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Abstract: This paper deals with the adsorption and desorption characteristics of kaoline to organic carbon and three nutrient elements, i.e. nitrogen, phosphorus and potash. The adsorption amounts of nano-kaoline to organic carbon , nitrogen, phosphorus and potash were higher than natural kaoline; especially, the adsorption amounts of nano-kaoline to nitrogen, phosphorus, patosh, and organic carbon were 1.5-1.7, 1.9-2.2 , 1.4-2.0, and 1.3-1.9 times higher than that of natural kaoline, respectively. The desorption amounts of natural kaoline and nano-kaoline increased with the increase of the adsorption amounts of organic carbon, nitrogen, phosphorus and potash. Both natural and nano-kaoline adsorption properties could be depicted with Langmuir and Freundlich equations.

Key words: Nano-kaoline, Adsorption, Desorption, Equation

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