Journal article
Transport and Retention of Fullerene Nanoparticles in Natural Soils
Journal of environmental quality, v 39(6), pp 1925-1933
Nov 2010
PMID: 21284289
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Commercial production and use of fullerene (C60) nanomaterials will inevitably lead to their release into the environment, where knowledge of C60 fate and transport is limited. In this study, a series of one‐dimensional column experiments was conducted to assess the transport and retention of nanoscale fullerene aggregates (nC60) in water‐saturated soils. Under the experimental conditions, complete retention of nC60 was observed in columns (2.5 cm inside diameter × 11 cm length) packed with Appling or Webster soil, which contain 0.75 and 3.33% organic carbon by weight, respectively. When the volume of aqueous nC60 suspension (∼4.5 mg L−1) applied to Appling soil was increased from 5 to 65 pore volumes, the travel distance increased from 3 to 8 cm, and the retention capacity approached a limiting value of 130 μg g−1, although nC60 was not detected in the column effluent. The addition of 20 mg C L−1 Suwannee River humic acid to the influent suspension increased the nC60 transport in Appling soil but did not result in breakthrough. Attempts to simulate the experimental data using clean‐bed filtration theory were not satisfactory, yielding retention profiles that failed to match observed data. Subsequent incorporation of a limiting retention capacity expression into the mathematical model resulted in accurate predictions of the measured nC60 retention profiles and transport behavior. The sizable retention capacities observed in this study suggest that transport of nC60 is limited in relatively fine‐textured soils containing appreciable amounts of clay minerals and organic matter, with substantial accumulation of nC60 aggregates near the point of release.
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Details
- Title
- Transport and Retention of Fullerene Nanoparticles in Natural Soils
- Creators
- Yonggang Wang - Tufts UniversityYusong Li - University of Nebraska–LincolnHyunjung Kim - Univ. of California‐RiversideSharon L. Walker - University of California, RiversideLinda M. Abriola - Tufts UniversityKurt D. Pennell - Tufts University
- Publication Details
- Journal of environmental quality, v 39(6), pp 1925-1933
- Publisher
- American Society of Agronomy, Crop Science Society of America, Soil Science Society
- Number of pages
- 9
- Grant note
- National Science Foundation (CBET‐0854136) U.S. Environmental Protection Agency's Science to Achieve Results (STAR) (RD‐832535)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- College of Engineering
- Web of Science ID
- WOS:000283897200006
- Scopus ID
- 2-s2.0-78650762986
- Other Identifier
- 991021229999104721
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- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Environmental Sciences