Effects of the silica nanoparticles (NPSiO2) on the stabilization and transport of hazardous nanoparticle suspensions into landfill soil columns

Abstract This study evaluates the stability and transport behaviors of hazardous nanoparticles into soil landfills using experimental procedures to simulate the effects of natural silica nanoparticle suspensions during their percolation into the soil layers of municipal waste landfills. For this, we...

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Bibliographic Details
Published in:REM - International Engineering Journal 2017-09, Vol.70 (3), p.317-323
Main Authors: Oliveira, Elizabeth Mendes de, Garcia-Rojas, Edwin Elard, Valadão, Izabella Christynne Ribeiro Pinto, Araújo, Adriana de Souza Forster, Castro, José Adilson de
Format: Article
Language:English
Subjects:
ENGINEERING, MECHANICAL
GEOLOGY
hazardous nanoparticles
MECHANICS
METALLURGY & METALLURGICAL ENGINEERING
silica nanoparticles (NPSiO2)
soil column
transport
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Summary:Abstract This study evaluates the stability and transport behaviors of hazardous nanoparticles into soil landfills using experimental procedures to simulate the effects of natural silica nanoparticle suspensions during their percolation into the soil layers of municipal waste landfills. For this, we prepared stabilized suspensions of nanoparticle oxides containing silicon (NPSiO2), titanium (NPTiO2), copper (NPCuO) and zinc (NPZnO), which are recognized as hazardous to the environment, and we conducted leaching experiments within the soil column by simulating landfills layers and simulating the capture and attenuation of nanomaterials into municipal waste landfills. The results demonstrated that the presence of NPSiO2 in suspensions increases the stable concentrations of copper, zinc and titanium oxides and strongly decreases soil layer effectiveness. In contrast, NPZnO improves effectiveness due to its ability to promote agglomeration and setting conditions, allowing further complexation.
ISSN:2448-167X
2448-167X
DOI:10.1590/0370-44672015700204