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Modeling arsenic removal by nanoscale zero-valent iron
Environmental Monitoring and Assessment, 2020Arsenic removal by nanoscale zero-valent iron (NZVI) was modeled using the USGS geochemical program PHREEQC. The Dzombak and Morel adsorption model was used. The adsorption of As(V) onto NZVI was assumed to happen because of the hydrous ferric oxide (Hfo) which was the surface oxide for the model.
Umma S. Rashid +2 more
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Kinetics of reductive denitrification by nanoscale zero-valent iron
Chemosphere, 2000Zero-valent iron powder (Fe0) has been determined to be potentially useful for the removal of nitrate in the water environment. This research is aimed at subjecting the kinetics of denitrification by nanoscale Fe0 to an analysis of factors affecting the chemical denitrification of nitrate.
S, Choe, Y Y, Chang, K Y, Hwang, J, Khim
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Impact of Nanoscale Zero Valent Iron on Bacteria Is Growth Phase Dependent
Chemosphere, 2016The toxic effect of nanoscale zero valent iron (nZVI) particles on bacteria from different growth phases was studied. Four bacterial strains namely Escherichia coli strains JM109 and BW25113, and Pseudomonas putida strains KT2440 and F1 were experimented. The growth curves of these strains were determined.
John McEvoy +2 more
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Removal of atrazine by nanoscale zero valent iron supported on organobentonite
Science of The Total Environment, 2011The organobentonite (CTMA-Bent) was prepared from Na(+)-saturated bentonite (Na-Bent) by intercalation with cetyltrimethylammonium bromide (CTMA), and used as a carrier of nanoscale zero valent iron (NZVI) for the removal of atrazine. The NZVI/CTMA-Bent composite was characterized by X-ray diffraction (XRD) and transmission electron microscope (TEM ...
Yun, Zhang, Yimin, Li, Xuming, Zheng
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Microbial reduction of nitrate in the presence of nanoscale zero-valent iron
Chemosphere, 2008Microbial reduction of nitrate in the presence of nanoscale zero-valent iron (NZVI) was evaluated to assess the feasibility of employing NZVI in the biological nitrate treatment. Nitrate was completely reduced within 3d in a nanoscale Fe(0)-cell reactor, while only 50% of the nitrate was abiotically reduced over 7d at 25 degrees C.
Kyung-Hee, Shin, Daniel K, Cha
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Evaluation of enhancement techniques for the dechlorination of DDT by nanoscale zero-valent iron
Chemosphere, 2021Due to its low toxicity and high reactivity, nanoscale zero-valent iron (nZVI) is widely used as a remediation agent. However, nZVI is also prone to rapid aggregation and surface oxidation, which significantly reduces its practical efficacy. Here three enhancement techniques, proposed to overcome these limiting factors, incremental addition, pH ...
Stephen Paul, Blundell, Gary, Owens
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Review of soluble uranium removal by nanoscale zero valent iron
Journal of Environmental Radioactivity, 2016Uranium (U) has been released to surface soil and groundwater through military and industrial activities. Soluble forms of U transferred to drinking water sources and food supplements can potentially threaten humans and the biosphere due to its chemical toxicity and radioactivity.
C, Jing, Y L, Li, S, Landsberger
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Transport of Nanoscale Zero-Valent Iron in the Presence of Rhamnolipid
Science of The Total EnvironmentNanoscale zero-valent iron (nZVI) particles have gained widespread use for in-situ treatment of various chlorinated hydrocarbons. Their non-toxic nature, affordability, and minimal maintenance requirements have made them a favored material for nanoremediation.
Alireza, Abbasi, Lin, Qi, Gang, Chen
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Remediation of contaminated soils by enhanced nanoscale zero valent iron
Environmental Research, 2018The use of nanoscale zero valent iron (nZVI) for in situ remediation of soil contamination caused by heavy metals and organic pollutants has drawn great concern, primarily owing to its potential for excellent activity, low cost and low toxicity. This reviews considers recent advances in our understanding of the role of nZVI and enhanced nZVI strategy ...
Danni, Jiang +6 more
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Nanoscale zero-valent iron flakes for groundwater treatment
Environmental Earth Sciences, 2014Even today the remediation of organic contaminant source zones poses significant technical and economic challenges. Nanoscale zero-valent iron (NZVI) injections have proved to be a promising approach especially for source zone treatment. We present the development and the characterization of a new kind of NZVI with several advantages on the basis of ...
R. Köber +18 more
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