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- W2362571844 abstract "The present paper takes as its target for study the medium sand and the typical pollution factor NH+4-N,aiming to discover their effects on the quality of polluted river water as well as the nearby groundwater,particularly on the water quality of the northwest arid and semi-arid areas. For the sake of research success,we have conducted a series of indoor soil column experiments to simulate the process of how the pollutants permeate and act on the water,trying to analyze the effects of the thickness of vadose zone and the concentration of pollutant factors in the water body on the adsorption of NH+4-N. While doing the above experiments,we have been paying particular attention to the study of the mechanism of adsorption of NH+4-N by the sandy soil. As is well known,the mutual interactive relation between river water and the groundwater in the northwest arid and semi-arid areas plays a crucial role in guaranteeing the water quality and the drinking water safety from the local groundwater resource. The results of our experiments show that (1) The adsorption isotherm curve of NH+4-N reveals that on the Langmuir adsorption isotherm curve,the biggest adsorption capacity is 56.5 mg/100 g soil; (2)Adsorption of NH+4-N through the same media,the dynamic adsorptive capacity turns to be far smaller than the static adsorptive one,and the mass concentration of NH+4 proves bigger,with the two differential values being greater; (3) The thickness of the media has hardly any effect on the adsorptive capacity of NH+4 at the same mass concentration; (4) For the same vadose zone,the adsorptive capacity,as well as the equilibrium concentration,the adsorption rate tends to increases with the increase of the mass concentration of NH+4 in injection,but the time of adsorption equilibrium tends to be invariable with the declining consumption of the liquid volume when the balance is achieved." @default.
- W2362571844 created "2016-06-24" @default.
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- W2362571844 date "2008-01-01" @default.
- W2362571844 modified "2023-09-23" @default.
- W2362571844 title "Research on adsorption of NH_4~+-N by the sandy soil" @default.
- W2362571844 hasPublicationYear "2008" @default.
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