The application of zero-valent iron nanoparticles for the remediation of a uranium-contaminated waste effluent

Dickinson, Michelle; Scott, Thomas Bligh

doi:10.1016/j.jhazmat.2010.01.060

Cited by 231 publications

(73 citation statements)

References 50 publications

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“…5 designate that at low pH value, the particles have a net positive charge, and at higher pH value, a net negative charge was acquired. These results agree well with the reported data (Dickinson and Scott 2010). As demonstrated in Fig.…”

Section: Resultssupporting

confidence: 94%

Effective Pb2+ removal from water using nanozerovalent iron stored 10 months

et al. 2017

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Heavy metal removal from water required reliable and cost-effective considerations, fast separation as well as easy methodology. In this piece of research, nanozerovalent iron (NZVI) was prepared as ideal sorbent for Pb 2? removal. The sample was characterized using X-ray diffraction (XRD), high-resolution transmission electron microscope (HRTEM), and atomic force microscope (AFM-SPM). Batch experiments comprised the effect of pH value and contact time on the adsorption process. The same NZVI was stored for a shelf time (10 months) and the batch experiment was repeated. The outcomes of the investigation assured that NZVI publicized an extraordinary large metal uptake (98%) after a short contact time (10 h). The stored sample revealed the same effectiveness on Pb 2? removal under the same conditions. The results of the physical properties, magnetic susceptibility, and conductance were correlated with the adsorption efficiency. This work offers evidence that these NZVI particles could be potential candidate for Pb 2? removal in large scale, stored for a long time using a simple, green, and cost-effective methodology, and represent an actual feedback in waste water treatment.

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Section: Resultssupporting

confidence: 94%

Effective Pb2+ removal from water using nanozerovalent iron stored 10 months

et al. 2017

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“…Although nano-Fe 0 have proven highly effective for the removal of a wide range of aqueous contaminants from simple synthetic solutions, in recent years, the performance of nano-Fe 0 for the remediation of chemically complex and/or "real" solutions in dissolved oxygen containing waters has yielded a contrasting result [3][4][5][6][7]. It has been outlined that the efficacy of nano-Fe 0 can be significantly lower in natural waters due to the presence of complexing agents that act to enhance the solubility of the metal and metalloid contaminant specie.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Vacuum Annealing of Magnetite and Zero-Valent Iron Nanoparticles on the Removal of Aqueous Uranium

Crane

Scott

2013

Journal of Nanotechnology

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As-formed and vacuum annealed zero-valent iron nanoparticles (nano-Fe 0 ) and magnetite nanoparticles (nano-Fe 3 O 4 ) were tested for the removal of uranium from carbonate-rich mine water. Nanoparticles were introduced to batch systems containing the mine water under oxygen conditions representative of near-surface waters, with a uranyl solution studied as a simple comparator system. Despite the vacuum annealed nano-Fe 0 having a 64.6% lower surface area than the standard nano-Fe 0 , similar U removal (>98%) was recorded during the initial stages of reaction with the mine water. In contrast, ≤15% U removal was recorded for the mine water treated with both as-formed and vacuum annealed nano-Fe 3 O 4 . Over extended reaction periods (>1 week), appreciable U rerelease was recorded for the mine water solutions treated using nano-Fe 0 , whilst the vacuum annealed material maintained U at <50 g L −1 until 4 weeks reaction. XPS analysis of reacted nanoparticulate solids confirmed the partial chemical reduction of U VI to U IV in both nano-Fe 0 water treatment systems, but with a greater amount of U IV detected on the vacuum annealed particles. Results suggest that vacuum annealing can enhance the aqueous reactivity of nano-Fe 0 and, for waters of complex chemistry, can improve the longevity of aqueous U removal.

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“…Their column test results confirmed that the stabilized nanoparticles were transportable through a sandy soil, and the water leachable perrhenate from the soil was reduced by 57 %, and nearly all eluted Re was in the form of ReO 2 (s) when the soil was treated with 14 pore volumes (PV) of 560 mg/L (as Fe) ZVI suspension at pH 7.2. For U(VI), a number of studies have observed effectiveness of conventional ZVI particles (either powder or non-stabilized synthetic aggregates) for reduction of U(VI) to U(IV) [33][34][35][36], yet there has been no report on in situ remediation using stabilized ZVI.…”

Section: Stabilized Zvi Nanoparticlesmentioning

confidence: 99%

Application of Stabilized Nanoparticles for In Situ Remediation of Metal-Contaminated Soil and Groundwater: a Critical Review

et al. 2015

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Remediation of soil and groundwater contaminated with toxic metals has been a major environmental challenge for decades. Yet, cost-effective and sustainable in situ remediation technologies remain lacking. Over the last 15 years or so, an innovative in situ remediation strategy has shown promising by means of stabilized nanoparticles. Stabilized nanoparticles are prepared using novel stabilizers that facilitate the deliverability and transport of nanoparticles in the subsurface. This study reviews synthesis and characterization of some model stabilized nanoparticles and their application for remediation of metal-contaminated soil and water. Fate and transport of these stabilized nanoparticles in groundwater and soil are also examined. Lastly, this review identifies the key knowledge gaps such as lack of field data pertaining to the long-term effectiveness of the immobilized metals and impacts of the delivered nanoparticles on the biogeochemical conditions in the subsurface. The information may facilitate further development of this promising remediation technology.

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The application of zero-valent iron nanoparticles for the remediation of a uranium-contaminated waste effluent

Cited by 231 publications

References 50 publications

Effective Pb2+ removal from water using nanozerovalent iron stored 10 months

Effective Pb2+ removal from water using nanozerovalent iron stored 10 months

The Effect of Vacuum Annealing of Magnetite and Zero-Valent Iron Nanoparticles on the Removal of Aqueous Uranium

Application of Stabilized Nanoparticles for In Situ Remediation of Metal-Contaminated Soil and Groundwater: a Critical Review

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