Simulation of the fate and transport of boron nanoparticles in two-dimensional saturated porous media

Journal of earth system science

Baisha Weng^3²  Chunmei Bai^1,2³  Huan Sheng Lai^4⁴ 

[1] College of Chemical Engineering, Fuzhou University, Fuzhou 350108, Fujian, People’s Republic of China.^4;Shenzhen Audaque Data Technology Co. Ltd., Shenzhen 518057, People’s Republic of China.^2;Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, People’s Republic of China.^1;State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, Beijing, People’s Republic of China.^3

关键词: Boron nanoparticles;    fullerene nanoparticles;    mobility;    subsurface;    heterogeneity;   

DOI  :  

学科分类：天文学(综合)

来源: Indian Academy of Sciences

【 摘 要 】

The wide production and application of engineered nanomaterials (ENMS) inevitably lead to their release in the groundwater environment. However, the release and transport of boron nanoparticles in the multi-dimensional subsurface remain largely unknown. In this work, a multi-dimensional numerical simulator for the transport of boron nanoparticles in the saturated porous media was first developed and validated. Hypothetical scenarios for the release of boron nanoparticles into a layered two-dimensional (2D) and heterogeneous 2D saturated porous media were then explored, and compared with the fullerene nanoparticles. The results demonstrated that the soil heterogeneity influenced the fate of nanoparticles, with high permeable layers and high aqueous-phase concentration. Besides, the boron nanoparticles tend to accumulate at the inlet zones, where it was closer to a nanoparticles source. Different layers of interface interaction also impact the concentration of nanoparticles. In general, the mobility and aqueous-phase concentration of fullerene nanoparticles were higher than those of the boron nanoparticles. In addition, the mobility of boron nanoparticles was found to be sensitive to release concentration, soil porosity and nanoparticle aggregate size.

【 授权许可】

CC BY