Laboratory studies on nitrate redistribution during the freezing process of a water-saturated sand system
作者: Huan HuangMingzhu LiuChangfu ChenGuoxin HuangHonghan Chen
作者单位: 1Beijing Key Laboratory of Water Resources & Environmental Engineering, China University of Geosciences (Beijing)
2Chinese Academy for Environmental Planning
刊名: Environmental Science and Pollution Research, 2019, Vol.26 (14), pp.13818-13824
来源数据库: Springer Journal
DOI: 10.1007/s11356-018-3251-0
关键词: FreezingNitrate redistributionConcentration ratioSoil particle sizePolysized grainUnfrozen solution pockets
英文摘要: Abstract(#br)The process of ice crystal formation by ejecting salt into a pore solution increases the solution’s concentration. However, the redistribution law of solutes in ice-containing soils is not well understood. We designed new equipment to obtain the unfrozen solution and study the nitrate redistribution. Our work investigates the mechanism of nitrate redistribution during the freezing of a saturated medium system. The results showed that the polysized grain samples had a higher freezing rate and lower salt discharge efficiency than the monosized grain samples. The influence of the freezing temperature and the initial concentration on the nitrate redistribution was dependent on the medium’s particle size. For the samples with particle sizes between 150 and 250 um, the ejection...
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影响因子:2.618 (2012)

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