Title: Adsorption Kinetics of Nitrate Nitrogen in Surface Sediments of Yellow River from Inner Mongolia
Abstract: The adsorption kinetics of nitrate nitrogen in three quarters incluidng the spring of 2013, the autumn of 2013 and2014 on the surface sediments from 6 different sampling points from Yellow River in Inner Mongolia were investigated under simulation environmental conditions. The results show that nitrate nitrogen adsorption deceased significantly with the increase of solid concentration(particle concentration effect) and the desorption of nitrate nitrogen on Yellow River sediments was irreversible.The adsorption rate of nitrate nitrogen on sediments were fast and the adsorption qehad a growing trend by the time in 5 ~90 min. the adsorption gradually stabled after 90 min. The minimum amount of adsorption capacity was 9.447 0mg/kg, showed in the Tuokeuo County's spring sample of 2013.The maximum one was 33.670 8 mg/kg in the Dengkou's autumn sample of 2013. The adsorption capacity in spring was higher than in autumn, but there were no significant differences in autumn of 2013 and 2014. Adsorption kinetics of nitrate nitrogen in surface sediments followed the second-order adsorption kinetics model.
Publication Year: 2015
Publication Date: 2015-01-01
Language: en
Type: article
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