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Scientific Paper

Potential Release Pathways, Environmental Fate, And Ecological Risks of Carbon Nanotubes

Reference Type:Journal Article
Author:Petersen, Elijah J.;Zhang, Liwen;Mattison, Nikolai T.;O’Carroll, Denis M.;Whelton, Andrew J.;Uddin, Nasir;Nguyen, Tinh;Huang, Qingguo;Henry, Theodore B.;Holbrook, R. David;Chen, Kai Loon
Author Addresses:Material Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, United StatesDepartment of Crop and Soil Sciences, University of Georgia, Griffin, Georgia 30223, United StatesDepartment of Civil and Environmental Engineering, University of Western Ontario, London, Ontario N6A 5B8, CanadaWater Research Laboratory, School of Civil and Environmental Engineering, University of New South Wales, Manly Vale, NSW, 2093, AustraliaDepartment of Civil Engineering, University of South Alabama, Mobile, Alabama 36688, United StatesEngineering Laboratory, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, United StatesSchool of Biomedical and Biological Sciences, University of Plymouth, Plymouth, Devon, United KingdomCenter for Environmental Biotechnology, University of Tennessee, Knoxville, Tennessee, United StatesDepartment of Forestry, Wildlife and Fisheries, University of Tennessee, Knoxville, Tennessee, United StatesDepartment of Geography and Environmental Engineering, Johns Hopkins University, Baltimore, Maryland 21218, United States
Title:Potential Release Pathways, Environmental Fate, And Ecological Risks of Carbon Nanotubes
Secondary Title:Environmental Science & Technology
Periodical Title:Environmental Science & Technology
Pages:9837-9856
Volume:45
Number:23
Year:2011
Publishing Date: 01.12.2011
ISBN:0013-936X
Related URLs:http://dx.doi.org/10.1021/es201579y

Carbon nanotubes (CNTs) are currently incorporated into various consumer products, and numerous new applications and products containing CNTs are expected in the future. The potential for negative effects caused by CNT release into the environment is a prominent concern and numerous research projects have investigated possible environmental release pathways, fate, and toxicity. However, this expanding body of literature has not yet been systematically reviewed. Our objective is to critically review this literature to identify emerging trends as well as persistent knowledge gaps on these topics. Specifically, we examine the release of CNTs from polymeric products, removal in wastewater treatment systems, transport through surface and subsurface media, aggregation behaviors, interactions with soil and sediment particles, potential transformations and degradation, and their potential ecotoxicity in soil, sediment, and aquatic ecosystems. One major limitation in the current literature is quantifying CNT masses in relevant media (polymers, tissues, soils, and sediments). Important new directions include developing mechanistic models for CNT release from composites and understanding CNT transport in more complex and environmentally realistic systems such as heteroaggregation with natural colloids and transport of nanoparticles in a range of soils.

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