Morphological and mineral features of nZVI-induced precipitation on quartz particles

Liu, Fuming1,2,3; Zhou, Wan-Huan4; Yi, Shuping3,5,6; Geng, Xueyu7

2021-08-01

10.1680/jenge.18.00081

Environmental Geotechnics   影响因子和分区

2051-803X

This study investigated the morphological and mineral features of nano zero-valent (nZVI)-induced iron mineral precipitation on quartz particles. Lead was employed as the artificial contaminant, while quartz was used to mimic the inert solid mineral particles in soil. The characterisation indicate that iron minerals precipitated heterogeneously on the surface of quartz particles with plush-like and flake-like structures. They are made of deuterogenic plumbiferous minerals and ferriferous minerals, with amorphous structure. The curly flake-like mineral clusters had a scattered distribution on the surface of quartz along with the corroded nZVI aggregation. The thickness of the curly flake-like precipitation varied from 20 to 60 nm, and that of the plush-like precipitation from 20 to 35 nm. The generation of these iron mineral precipitations led to a slight increase in the average particle size and a decrease in the surface area of the soil. However, no clear difference in the shape and roughness of quartz was found after the nZVI treatment. This study was performed to improve the understanding of mass transfer from nZVI to inert solid particles in soil and its effect on soil improvement.

environmental engineering geochemistry soil stabilisation

SCI ; EI

英语

通讯

Macau Science and Technology Development Fund[125/2014/A3] ; University of Macau Research Fund[MYRG2017-00198-FST] ; Shenzhen Peacock Plan[KQTD2016022619584022] ; Shenzhen Basic Research Plan[JCYJ20160429191638556] ; Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control[2017B030301012] ; National Natural Science Foundation of China[1678319]

Engineering

Engineering, Geological

WOS:000686473400007

ICE PUBLISHING

20213410806171

Mass transfer ; Particle size ; Quartz ; Soils

Minerals:482.2 ; Soils and Soil Mechanics:483.1 ; Mass Transfer:641.3 ; Chemical Operations:802.3

Web of Science

1.Univ Macau, Fac Sci & Technol, Dept Civil & Environm Engn, Taipa, Macau, Peoples R China
2.Shenzhen Key Lab Soil & Groundwater Pollut Contro, Shenzhen, Peoples R China
3.Southern Univ Sci & Technol, Sch Environm Sci & Engn, Shenzhen, Peoples R China
4.Univ Macau, Dept Civil & Environm Engn, Geotech Engn, Fac Sci & Technol, Taipa, Macau, Peoples R China
5.Guangdong Prov Key Lab Soil & Groundwater Pollut, Hydrogeol & Engn Geol, Shenzhen, Peoples R China
6.Southem Univ Sci & Technol, Sch Environm Sci & Engn, Shenzhen, Peoples R China
7.Univ Warwick, Geotech Engn, Sch Engn, Coventry, W Midlands, England

Liu, Fuming,Zhou, Wan-Huan,Yi, Shuping,et al. Morphological and mineral features of nZVI-induced precipitation on quartz particles[J]. Environmental Geotechnics,2021,8(5):357-364.

Liu, Fuming,Zhou, Wan-Huan,Yi, Shuping,&Geng, Xueyu.(2021).Morphological and mineral features of nZVI-induced precipitation on quartz particles.Environmental Geotechnics,8(5),357-364.

Liu, Fuming,et al."Morphological and mineral features of nZVI-induced precipitation on quartz particles".Environmental Geotechnics 8.5(2021):357-364.