Characteristics of two types of stabilized nano zero-valent iron and transport in porous media

Lin, Yu-Hao; Tseng, Hui‐Hsin; Wey, Ming‐Yen; Lin, Min‐Der

doi:10.1016/j.scitotenv.2010.01.039

Cited by 169 publications

(73 citation statements)

References 46 publications

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“…(19) In fact, in this experiment, a white precipitate was observed at the cathode compartment as predicted by the model calculations.…”

Section: Chemical Equilibriasupporting

confidence: 64%

“…With the development of advanced nanotechnologies since late nineties, due to their size and reactivity that allowed an easy injection,zero valent iron nanoparticles (nZVI) were considered a promising step forward in soil and groundwater clean-up, particularly targeting organochlorines [4][5][6][7][8]. The nZVI transport in porous media was studied in column tests with sand [9][10][11][12][13][14][15][16], glass beads [17][18][19] and model soils [20,21]. These studies showed that nZVI has a tendency to aggregate quickly and settle in the pores, primarily due to magnetic attractive forces [22].…”

Section: Introductionmentioning

confidence: 99%

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Numerical prediction of diffusion and electric field-induced iron nanoparticle transport

Gomes

Rodríguez‐Maroto

Ribeiro

et al. 2015

Electrochimica Acta

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Numerical prediction of diffusion and electric field-induced iron nanoparticle transport, Electrochimica Acta http://dx.doi.org/10.1016/j.electacta. 2014.11.157 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.

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“…(19) In fact, in this experiment, a white precipitate was observed at the cathode compartment as predicted by the model calculations.…”

Section: Chemical Equilibriasupporting

confidence: 64%

Section: Introductionmentioning

confidence: 99%

Numerical prediction of diffusion and electric field-induced iron nanoparticle transport

Gomes

Rodríguez‐Maroto

Ribeiro

et al. 2015

Electrochimica Acta

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“…Contaminated medium composition and environmental conditions in natural systems such as the presence of humic acid (the mobility is increased in the presence of humic acid) in subsurface, as well as ionic strength of the resident water, influences and modifies nanoparticle mobility. Increasing the ionic strength enhances the deposition of the nanoparticles, in other words, the mobility of NZVPs is decreased with ion concentrations increase [21]. The addition of salt enhances the deposition of the nanoparticles [22], and increases NZVPs aggregation [13].…”

Section: Environmental Cleanup: Benefits and Limits Of Nano-based Tecmentioning

confidence: 99%

Nanoparticles Restrictions in Environmental Cleanup

Snousy¹,

Mf²

2017

Nano Res Appl

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Environmental contamination with a variety and mixed pollutants are a problematic issue worldwide. If the contaminated sites are left without any satisfactory remediation, it leads to the successive threaten of ecosystems, then human life. So, applications of nanotechnology in environmental remediation are encouraged because of the novel properties (e.g. special structure, very large surface area and greater reactivity), whereas, ''Nano'' may be more than just ''small''. Also, environmental nanotechnology restraint is due to lack of full understanding characterization, fate and transport of such ultrafine materials in the environment. The objective of this work is to point major challenges facing environmental nanoscience and urges developing eco-friendly techniques to ensure good quality of life.

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“…[52][53][54][55] It has been shown that ionic strength 54,55 will decrease nZVI mobility, while natural organic matter (NOM) content 56 and microbial subsurface biofilms 57 will increase nZVI mobility in water-saturated subsurface environments. Several different methods have been developed for limiting aggregation of nZVI in water and enhancing its mobility in porous media.…”

mentioning

confidence: 99%

“…These methods include suspension of nZVI in vegetable oil emulsion, 58 attachment of the 220 particles to anionic carbon supports, 51 and application of sorbed polymer coatings, 55,59,60,61,62 or combinations of the above. In some cases these coatings have incorporated hydrophobic moieties to create nZVI particles that will preferentially migrate towards the DNAPL-water interface, 58, 63 albeit the activity of nZVI in the DNAPL has been subject of discussion.…”

mentioning

confidence: 99%

Effect of Nanoscale Zero-Valent Iron Treatment on Biological Reductive Dechlorination: A Review of Current Understanding and Research Needs

Bruton

Pycke

Halden

2015

Critical Reviews in Environmental Science and Technology

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Nanoscale zero-valent iron (nZVI) is a strong non-specific reducing agent that is used for in situ degradation of chlorinated solvents and other oxidized pollutants. However, there are significant concerns regarding risks posed by the deliberate release of engineered nanomaterials 20 into the environment, which have triggered moratoria, for example, in the United Kingdom. This critical review focuses on the effect of nZVI injection on subsurface microbial communities, which are of concern due to their important role in contaminant attenuation processes.Corrosion of ZVI stimulates dehalorespiring bacteria, due to the production of H 2 that can serve as an electron donor for reduction of chlorinated contaminants. Conversely, lab studies show 25 that nZVI can be inhibitory to pure bacterial cultures, although toxicity is reduced when nZVI is coated with polyelectrolytes or natural organic matter. The emerging toolkit of molecular biological analyses should enable a more sophisticated assessment of combined nZVI/biostimulation or bioaugmentation approaches. While further research on the consequences of its application for subsurface microbial communities is needed, nZVI continues 30 to hold promise as an innovative technology for in situ remediation of pollutants. It is particularly attractive for the remediation of subsurface environments containing chlorinated ethenes because of its ability to potentially elicit and sustain both physical-chemical and biological removal despite its documented antimicrobial properties.

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Characteristics of two types of stabilized nano zero-valent iron and transport in porous media

Cited by 169 publications

References 46 publications

Numerical prediction of diffusion and electric field-induced iron nanoparticle transport

Numerical prediction of diffusion and electric field-induced iron nanoparticle transport

Nanoparticles Restrictions in Environmental Cleanup

Effect of Nanoscale Zero-Valent Iron Treatment on Biological Reductive Dechlorination: A Review of Current Understanding and Research Needs

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