NDLI: Influence of nano-Al2O3 on the migration of heavy metal Cr in the unsaturated soil

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The Journal of Engineering

Influence of nano-Al2O3 on the migration of heavy metal Cr in the unsaturated soil

Content Provider	IET Digital Library
Author	Junjie, Zhang Hanyu, Liu Yuan, Wan Mo, Xu Guo, Liu
Abstract	Chromium(VI), a kind of migratory heavy metal pollutant, does not only accumulate in the soil in huge amount, but it can also migrate to the deep layer soil and even contaminate the groundwater. The migration pattern of water in the unsaturated silt loam is studied. Then the dynamic leaching characteristic of Cr(VI) is observed. Finally, through the indoor soil column leaching experiment, the influence of adding nano-aluminium oxide (Al2O3) into the soil column on the migration of Cr(VI) in the silt loam is analysed. In unsaturated silt loam, water in it apparently affects the Cr migration. The deeper the soil layer is, the lower the Cr(VI) concentration is. With the drip irrigation going on, the Cr(VI) concentration in the soil increases constantly until it fundamentally reaches the saturated adsorbance of the soil. With nano-Al2O3 added into the column, the migratory rate of Cr(VI) in the soil decrease obviously, which is probably because of the space steric effect and adsorption characteristics of nano-Al2O3. Therefore, nano-Al2O3 can be utilised as a preferable material to reduce the migration rate of Cr(VI) of soil and groundwater. The research results can supply the theoretical basis to the research of heavy metal pollution in the unsaturated soil.
Starting Page	35
Ending Page	39
Page Count	5
Volume Number	12
e-ISSN	17500443
Issue Number	Issue 1, Jan (2017)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/mnl/12/1
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/mnl.2016.0467
Journal	Micro & Nano Letters
Publisher Date	2017-01-01
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Cr Migration Cr(VI) Concentration Cr(VI) Migration Cr(VI) Migratory Rate Deep Layer Soil Dynamic Cr(VI) Leaching Characteristic Geochemistry Groundwater Groundwater Contaminant Groundwater Pollution Heavy Metal Cr Migration Heavy Metal Pollutant Heavy Metal Pollution Heavy Metal Pollution Research Indoor Soil Column NanoAl2O3 Influence Nanoaluminium Oxide Soil Soil And Rock (environmental Science) Soil Pollution Soil Saturated Adsorbance Solid Earth Physics Space Steric Effect Unsaturated Soil Unsaturated Soil Pollution Water Migration Pattern Water Quality Water Quality And Water ReSource Worldwide Environmental Problem
Content Type	Text
Resource Type	Article

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