Biogenic nano-magnetite and nano-zero valent iron treatment of alkaline Cr(VI) leachate and chromite ore processing residue

Watts, Mathew P.; Coker, Victoria S.; Parry, Stephen; Pattrick, R. A. D.; Thomas, R. A. P.; Kalin, Robert M.; Lloyd, Jonathan R.

doi:10.1016/j.apgeochem.2014.12.001

Cited by 77 publications

(27 citation statements)

References 108 publications

(152 reference statements)

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“…Both NPs exhibit a considerable capacity for the remediation of COPR related Cr(VI) contamination, with the NZVI demonstrating greater reactivity than the biogenic MNPs. However, the biosynthesized MNP is also capable of significant Cr(VI) reduction and demonstrates a greater efficiency for the coupling of its electrons towards Cr(VI) reduction than the NZVI [379]. Magnetic Fe3O4@poly(m-phenylenediamine) particles (Fe3O4@PmPDs) with well-defined core−shell structure show high Cr(VI) removal that is attributed to the adsorption of Cr(VI) on protonated imino groups and the efficient reduction of Cr(VI) to Cr(III) by amine, followed by Cr(III) chelated on imino groups [380].…”

Section: Chemical Reductive Removal Of Contaminantsmentioning

confidence: 99%

Environmental implications and applications of engineered nanoscale magnetite and its hybrid nanocomposites: A review of recent literature

2017

Journal of Hazardous Materials

306

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Section: Chemical Reductive Removal Of Contaminantsmentioning

confidence: 99%

Environmental implications and applications of engineered nanoscale magnetite and its hybrid nanocomposites: A review of recent literature

2017

Journal of Hazardous Materials

306

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“…Only a few studies addressed the treatment of contaminated waters as real samples, such as groundwater, effluents or wastewater [41,46,48,55,56]. Chen et al [57] have simulated natural waters by testing solutions of different complexity, deionized distilled water, tap water, mountain stream water and river water.…”

Section: Type Of Solutionsmentioning

confidence: 99%

Chromium removal from contaminated waters using nanomaterials – A review

Almeida

Cardoso

Tavares

et al. 2019

TrAC Trends in Analytical Chemistry

119

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Current environmental policies aim to reduce the levels of toxic substances in aquatic ecosystems and to promote the water reuse after appropriate treatment of wastewater.Chromium is a hazard element present in effluents of various industries that should be reduced to achieve the objectives of those policies. Most of the results reported in the literature concern the use of nanomaterials for chromium sorption dissolved either in synthetic or mono-elemental spiked solutions. The present work reviews the results of research undertaken in the last decade on the application of various nanomaterials to decrease chromium concentrations in contaminated waters. Major factors influencing the removal efficiency were examined. Because most of the published studies are based on simple experiments with deionised water and mono contamination further studies are suggested focused on effects of natural and artificial chelators, interferences of other trace elements competing with chromium sorption, reduction the sorbent mass per water volume.

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“…NanoRem conducted field tests related to chlorinated solvents (NanoRem, ). In addition, NanoRem performed laboratory‐scale tests using several other NP types, including: “Trap‐Ox” Fe‐zeolites, microporous alumosilicates, loaded with FeII/III ions by ion exchange, as an assist for Fenton's‐based in situ chemical oxidation applications. The use of bionanomagnetite for nanoremediation of chlorinated solvents and trace elements, as a “green” alternative to chemical synthesis routes (Watts et al., ). …”

Section: Risk‐benefit Appraisal For Nanorem Technologiesmentioning

confidence: 99%

“…• The use of bionanomagnetite for nanoremediation of chlorinated solvents and trace elements, as a "green" alternative to chemical synthesis routes (Watts et al, 2015).…”

Section: Extended Range Of Treatable Contaminantsmentioning

confidence: 99%

Status of nanoremediation and its potential for future deployment: Risk‐benefit and benchmarking appraisals

Bardos¹,

Merly²,

Kvapil

et al. 2018

Remediation Journal

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NanoRem (Taking Nanotechnological Remediation Processes from Lab Scale to End User Applications for the Restoration of a Clean Environment) was a research project, funded through the European Commission's Seventh Framework Programme, which focuses on facilitating practical, safe, economic, and exploitable nanotechnology for in situ remediation of polluted soil and groundwater, which closed in January 2017. This article describes the status of the nanoremediation implementation and future opportunities for deployment based on risk‐benefit appraisal and benchmarking undertaken in the NanoRem Project. As of November 2016, NanoRem identified 100 deployments of nanoremediation in the field. While the majority of these are pilot‐scale deployments, there are a number of large scale deployments over the last five to 10 years. Most applications have been for plume control (i.e., pathway management in groundwater), but a number of source control measures appear to have taken place. Nanoremediation has been most frequently applied to problems of chlorinated solvents and metals (such as chromium VI). The perception of risk‐benefit balance for nanoremediation has shifted as the NanoRem Project has proceeded. Niche benefits are now more strongly recognized, and some (if not most) of the concerns, for example, relating to environmental risks of nanoremediation deployment, prevalent when the project was proposed and initiated, have been addressed. Indeed, these now appear overstated. However, it appears to remain the case that in some jurisdictions the use of nanoparticles remains less attractive owing to regulatory concerns and/or a lack of awareness, meaning that regulators may demand additional verification measures compared to technologies with which they have a greater level of comfort.

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Biogenic nano-magnetite and nano-zero valent iron treatment of alkaline Cr(VI) leachate and chromite ore processing residue

Cited by 77 publications

References 108 publications

Environmental implications and applications of engineered nanoscale magnetite and its hybrid nanocomposites: A review of recent literature

Environmental implications and applications of engineered nanoscale magnetite and its hybrid nanocomposites: A review of recent literature

Chromium removal from contaminated waters using nanomaterials – A review

Status of nanoremediation and its potential for future deployment: Risk‐benefit and benchmarking appraisals

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