NDLI: Co-transport of chlordecone and sulfadiazine in the presence of functionalized multi-walled carbon nanotubes in soils.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Zhang, Miaoyue Engelhardt, Irina Simunek, Jirka Bradford, Scott A. Kasel, Daniela Berns, Anne E. Vereecken, Harry Klumpp, Erwin
Description	Author Affiliation: Zhang M ( Agrosphere Institute (IBG-3), Forschungszentrum Jülich GmbH, 52425 Jülich, Germany); Engelhardt I ( Agrosphere Institute (IBG-3), Forschungszentrum Jülich GmbH, 52425 Jülich, Germany); Simunek J ( Department of Environmental Sciences, University of California Riverside, Riverside, CA 92521, USA.); Bradford SA ( United States Department of Agriculture, Agricultural Research Service, U. S. Salinity Laboratory, Riverside, CA 92507, USA.); Kasel D ( Agrosphere Institute (IBG-3), Forschungszentrum Jülich GmbH, 52425 Jülich, Germany.); Berns AE ( Agrosphere Institute (IBG-3), Forschungszentrum Jülich GmbH, 52425 Jülich, Germany.); Vereecken H ( Agrosphere Institute (IBG-3), Forschungszentrum Jülich GmbH, 52425 Jülich, Germany.); Klumpp E ( Agrosphere Institute (IBG-3), Forschungszentrum Jülich GmbH, 52425 Jülich, Germany.)
Abstract	Batch and saturated soil column experiments were conducted to investigate sorption and mobility of two C-labeled contaminants, the hydrophobic chlordecone (CLD) and the sulfadiazine (SDZ), in the absence or presence of functionalized multi-walled carbon nanotubes (MWCNTs). The transport behaviors of CLD, SDZ, and MWCNTs were studied at environmentally relevant concentrations (0.1-10 mg L ) and they were applied in the column studies at different times. The breakthrough curves and retention profiles were simulated using a numerical model that accounted for the advective-dispersive transport of all compounds, attachment/detachment of MWCNTs, equilibrium and kinetic sorption of contaminants, and co-transport of contaminants with MWCNTs. The experimental results indicated that the presence of mobile MWCNTs facilitated remobilization of previously deposited CLD and its co-transport into deeper soil layers, while retained MWCNTs enhanced SDZ deposition in the topsoil layers due to the increased adsorption capacity of the soil. The modeling results then demonstrated that the mobility of engineered nanoparticles (ENPs) in the environment and the high affinity and entrapment of contaminants to ENPs were the main reasons for ENP-facilitated contaminant transport. On the other hand, immobile MWCNTs had a less significant impact on the contaminant transport, even though they were still able to enhance the adsorption capacity of the soil.
File Format	HTM / HTML
ISSN	02697491
Volume Number	221
e-ISSN	18736424
Journal	Environmental Pollution
Language	English
Publisher	Elsevier
Publisher Date	2017-02-01
Publisher Place	Great Britain (UK)
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Discipline Environmental Discipline Science Chlordecone Analysis Models, Chemical Nanotubes, Carbon Chemistry Soil Pollutants Sulfadiazine Adsorption Soil Symporters Journal Article
Content Type	Text
Resource Type	Article
Subject	Health, Toxicology and Mutagenesis Pollution Medicine Toxicology

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