Journal Article10.1021/CM0218108
Delivery Vehicles for Zerovalent Metal Nanoparticles in Soil and Groundwater
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TL;DR: Anionic, hydrophilic carbon and poly(acrylic acid)-supported (Fe/PAA) zerovalent iron nanoparticles were studied as a reactive material for the dehalogenation of chlorinated hydrocarbons in groundwater and soils as mentioned in this paper.
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Abstract: Anionic, hydrophilic carbon (Fe/C) and poly(acrylic acid)-supported (Fe/PAA) zerovalent iron nanoparticles were studied as a reactive material for the dehalogenation of chlorinated hydrocarbons in groundwater and soils The transport of Fe/C nanoparticles was studied by elution through columns packed with model soils from different regions of the USDA soil textural triangle, and was compared to that of unsupported Fe nanoparticles The Fe/C and Fe/PAA particles form colloidal suspensions that settle very slowly (hours to days) in water Their anionic surface charge facilitates transport through soil- and sand-packed columns Elution lengths from column breakthrough studies were compared with calculations based on the Tufenkji−Elimelech model (Environ Sci Technol 2004, 38, 529) It can be concluded from this comparison that nanoparticle diffusion is the dominant filtration mechanism, and that Fe/PAA and Fe/C particles have sticking coefficients on the order of 036 and ≤007, respectively, in sand and 0
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Citations
Multifunctional Colloidal Particles for in Situ Remediation of Chlorinated Hydrocarbons
Jingjing Zhan,Bhanukiran Sunkara,Lynn Le,Vijay T. John,Jibao He,Gary L. McPherson,Gerhard Piringer,Yunfeng Lu +7 more
TL;DR: This work describes the use of a novel decontamination system containing highly uniform carbon microspheres in the optimal size range for transport through the soil that appears to satisfy criteria related to remediation and are made with potentially environmentally benign materials.
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Immobilization of non-point phosphorus using stabilized magnetite nanoparticles with enhanced transportability and reactivity in soils.
TL;DR: Investigation of the immobilization of phosphorus (P) in soils using synthetic magnetite nanoparticles stabilized with sodium carboxymethyl cellulose found that phosphorus removal was less than that of microparticles without the stabilizer due to the reduced P reactivity caused by the coating.
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The influence of humic acid and clay content on the transport of polymer-coated iron nanoparticles through sand.
TL;DR: The introduction of nanoscale zero valent iron into the subsurface has recently received significant attention as a potentially effective method for remediation of source zones of chlorinated solvents present as dense nonaqueous phase liquids (DNAPL).
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Stabilization of Fe0 nanoparticles with silica fume for enhanced transport and remediation of hexavalent chromium in water and soil
TL;DR: In this paper, the authors showed that attachment of Fe(0) nanoparticles on the commercial available sub-micrometer silica fume prevented them from aggregation while maintaining the particle reactivity.
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Effects of nano-sized zero-valent iron on DDT degradation and residual toxicity in soil: a column experiment
TL;DR: In this paper, the effect of zero-valent iron (nZVI) on DDT degradation was investigated and negative effects of nZVI on plants were evaluated using seed germination and plant growth tests.
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