Change search
ReferencesLink to record
Permanent link

Direct link
Transport of Multi-Walled Carbon Nanotubes in Saturated Porous Media
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, LUVAL.
2012 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

Carbon nanotubes (CNTs) have been one of the most studied nanoparticles and incorporated into various consumer products. It has been reported that CNTs can enter groundwater systems by accidental or intentional release into the subsurface. As transport mechanisms of CNTs are not well understood, investigation on mobility of CNTs in the subsurface will be helpful to define disposal regulations of CNTs. The objective in this study is to investigate the effect of solution chemistry (pH and ionic strength) and physical factors (collector grain size and flow rate) on the transport of multi-walled carbon nanotubes (MWCNTs). One-dimensional convection-dispersion model incorporated with collector efficiency for cylindrical nanoparticles was used to simulate the transport of MWCNTs in porous media. It was observed that higher pH led to increase in mobility of MWCNTs. The critical point of ionic strength for MWCNTs getting mobilized was narrowed down in the range of 2 to 5 mM. It was observed that the finer porous media could retain more nanoparticles. The decrease in pore water velocity resulted in a clear retardation, lowered the hydrodynamic force acting on the particles and led to more retention.

Place, publisher, year, edition, pages
2012. , 42 p.
Examensarbete vid Institutionen för geovetenskaper, ISSN 1650-6553 ; 236
Keyword [en]
MWCNTs, solution chemistry, DLVO, straining, saturated porous media
National Category
Oceanography, Hydrology, Water Resources
URN: urn:nbn:se:uu:diva-177092OAI: diva2:540701
Educational program
Master Programme in Earth Science
2012-06-14, Norrland 1, Villavägen 16, Uppsala, 11:15 (English)
Life Earth Science
Available from: 2012-07-31 Created: 2012-07-03 Last updated: 2012-07-31Bibliographically approved

Open Access in DiVA

fulltext(3631 kB)527 downloads
File information
File name FULLTEXT01.pdfFile size 3631 kBChecksum SHA-512
Type fulltextMimetype application/pdf

By organisation
Oceanography, Hydrology, Water Resources

Search outside of DiVA

GoogleGoogle Scholar
Total: 527 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Total: 277 hits
ReferencesLink to record
Permanent link

Direct link