Study on Characters of Nitrogen Adsorption and Desorption of Sediment in Ganjiang River

Abstract:

Sediment has the function of adsorption and desorption of the nitrogen in water body. This study provides the theoretical basis of calculating the nitrogen content discharged into the Poyang Lake. The results show the nitrogen adsorption of sediment reaches balance basically in about 4~ 6h, the adsorption capacity is increased with the increment of the initial concentration of nitrogen, and decreased with the increment of sediment conentration.The isothermal adsorption of nitrogen by sediment can be fitted preferably by Henry and Langmuir equation.The adsorption and desorption process can be fitted by Langmuir equation.The nitrogen desorption of sediment reaches balance basically in about 8~14h.The nitrogen desorption capacity of sediment is decreased with the increment of sediment concentration.

• Periodical: Applied Mechanics and Materials (Volumes 212-213)
• Pages: 391-394
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.212-213.391
• Online since: October 2012
• Authors: Qiu Lin Ouyang, Gui Qing Gao, Su Su Liu, Xiao Ling Shi
• Keywords: Adsorption, Desorption, Nitrogen, Sediment

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