Silica coated magnetite particles for magnetic removal of Hg2+ from water

Girginova, Penka I.; Daniel‐da‐Silva, Ana L.; Lopes, Cláudia B.; Figueira, Paula; Otero, Marta; Amaral, V. S.; Pereira, Eduarda; Trindade, Tito

doi:10.1016/j.jcis.2010.01.087

Cited by 339 publications

(156 citation statements)

References 62 publications

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“…Magnetite has a strong affinity for mercury, as shown by its utility in cleaning up mercury spills (Girginova et al, 2010), making it possible, and indeed likely, that mercury could interfere with the functioning of a MBM. The same is true for a RPM, which appears likely to play at least some role in the turtles SMA (Landler et al, 2015).…”

Section: Discussionmentioning

confidence: 99%

High levels of maternally transferred mercury disrupt magnetic responses of snapping turtle hatchlings (Chelydra serpentina)

Landler

Painter

Coe

et al. 2017

Environmental Pollution

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a b s t r a c tThe Earth's magnetic field is involved in spatial behaviours ranging from long-distance migration to nongoal directed behaviours, such as spontaneous magnetic alignment (SMA). Mercury is a harmful pollutant most often generated from anthropogenic sources that can bio-accumulate in animal tissue over a lifetime. We compared SMA of hatchling snapping turtles from mothers captured at reference (i.e., low mercury) and mercury contaminated sites. Reference turtles showed radio frequency-dependent SMA along the north-south axis, consistent with previous studies of SMA, while turtles with high levels of maternally inherited mercury failed to show consistent magnetic alignment. In contrast, there was no difference between reference and mercury exposed turtles on standard performance measures. The magnetic field plays an important role in animal orientation behaviour and may also help to integrate spatial information from a variety of sensory modalities. As a consequence, mercury may compromise the performance of turtles in a wide variety of spatial tasks. Future research is needed to determine the threshold for mercury effects on snapping turtles, whether mercury exposure compromises spatial behaviour of adult turtles, and whether mercury has a direct effect on the magnetoreception mechanism(s) that mediate SMA or a more general effect on the nervous system.

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Section: Discussionmentioning

confidence: 99%

High levels of maternally transferred mercury disrupt magnetic responses of snapping turtle hatchlings (Chelydra serpentina)

Landler

Painter

Coe

et al. 2017

Environmental Pollution

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“…Iron oxide nanoparticles are considered as a promising source for industrial wastewater treatment. Some of the salient features include the strong adsorption capacity, low cost, easy to separate (Girginova et al, 2010;Fan et al, 2012). Similarly magnetic nanoparticles a posses unique physiochemical properties for instance surface charge, size and paramagnetic properties which makes them one of the ideal candidate in waste water treatment (Qu et al, 2013).…”

Section: Nanomaterials Coated Water Filtersmentioning

confidence: 99%

Nanoagroparticles emerging trends and future prospect in modern agriculture system

Baker

Volova

Prudnikova

et al. 2017

Environmental Toxicology and Pharmacology

170

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Increment of technical knowledge has remarkably uplifted logical thinking among scientific communities to shape the theoretical concepts into near product-oriented research. The concept of nanotechnology has overwhelmed almost all forms of lives and has traded its applications in myriad fields. Despite rapid expansion of nanotechnology, sustainable competitions still do exist in the field of agriculture. In current scenario, agriculture is a manifestation demand to provide adequate nutrition for relentless growing global population. It is estimated that nearly one-third of the global crop production is destroyed annually. The loss owes to various stresses such as pest infestation, microbial pathogens, weeds, natural calamities, lack of soil fertility and much more. In order to overcome these limitations, various technological strategies are implemented but a majority of these have their own repercussions. Hence there is a scrawling progress on the evaluation of nanoparticles into agriculture sector which can reform the modern agricultural system. Applications of these nanomaterials can add tremendous value in the current scenario of a global food scarcity. Nanotechnology can address the adverse effects posed by the abundant use of chemical agrochemicals which are reported to cause biomagnification in an ecosystem. Based on these facts and consideration, present review envisages on nanoparticles as nanoherbicides, nanopesticides, onsite detection agro-pathogens and nanoparticles in post harvest management. The review also elucidates on the importance of nanoparticles in soil fertility, irrigation management and its influence on improving crop yield. With scanty reports available on nanotechnology in agriculture system, present review attributes toward developing nanoagroparticles as the future prospect which can give new facelift for existing agriculture system.

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“…In other fields, there is a magnetically targeted drug delivery in the bioengineering field (Häfeli et al, 1997;Kuznetsov et al, 1999;Weingart et al, 2013), and a recovering technology for specific substances such as hazardous heavy metal molecules (environmental waste and pollutants) or valuable noble metal molecules from water (sea, lake, etc.) in the environmental resources engineering field (Girginova et al, 2010;Lan et al, 2013;Bruce and Sen, 2005;Satoh, 2001). We here focus on phenomena of magnetic particle suspensions from the viewpoint of fluid engineering.…”

Section: Introductionmentioning

confidence: 99%

Control of the orientational characteristics of disk-like hematite particles by a simple shear flow

Satoh

2016

Mechanical Engineering Letters

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We discuss the behavior of oblate spheroidal hematite particles in a simple shear flow. Magneto-rheological properties are strongly dependent on the magnetic field direction. For instance, a rod-like hematite particle suspension exhibits negative viscosity characteristics in a certain direction of an applied magnetic field. From this background, we here consider the case of an external magnetic field applied in the direction of the angular velocity vector of a simple shear flow. If the magnetic field is much more dominant than the thermal motion, the particle can almost freely rotate about the direction of the angular velocity vector. This characteristic rotational motion is suppressed or controlled by the shear flow more significantly with increasing shear rate.

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Silica coated magnetite particles for magnetic removal of Hg2+ from water

Cited by 339 publications

References 62 publications

High levels of maternally transferred mercury disrupt magnetic responses of snapping turtle hatchlings (Chelydra serpentina)

High levels of maternally transferred mercury disrupt magnetic responses of snapping turtle hatchlings (Chelydra serpentina)

Nanoagroparticles emerging trends and future prospect in modern agriculture system

Control of the orientational characteristics of disk-like hematite particles by a simple shear flow

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