Publication Date:
2018-11-06
Description:
The in-situ leaching of ionic rare earth minerals often causes serious nitride pollution in the mining area and surrounding areas. In this paper, the rare earth soil in the Zu Dong mining area of Long Nan, Gan Zhou city, was used as the research object. Through batch equilibrium adsorption tests, the adsorption properties of ammonium nitrogen in different sizes of rare earth soils, the adsorption dynamics and thermodynamics of ammonium nitrogen under different concentrations of ammonium sulfate solution, and the effect of the solution flow rate and concentration in the soil column under dynamic conditions on the adsorption of ammonium on the soil was systematically studied. The results showed that in different diameters of rare earth soils, the adsorption capacity was: clay (within 0.074 mm) 〉 fine sand (range 0.074 to 0.25 mm) 〉 sand (beyond 0.25 mm) 〉 original soil (12.37% clay, 43.9% sandy soil, and 31.56% fine sand), indicating that the clay in the original soil pla...
Print ISSN:
1755-1307
Electronic ISSN:
1755-1315
Topics:
Geography
,
Geosciences
,
Physics
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