Reversible magnetic mercury extraction from water

Abstract

Magnetic carbon-coated cobalt nanoparticles functionalized with polyethyleneimine proved to be highly effective and selective for the detoxification of mercury ions from aqueous solutions.

Inorganic engineered nanoparticles in drinking water treatment: a critical review

“…241 The kinetic, thermodynamic and adsorption mechanisms in this process were also analyzed. 249 The selective determination of Cr(III) and Cr(VI) in tap water and wastewater was developed by another simple, economical and relatively 'green' method, based on the fluorescence quenching of glutathione-stabilized gold nanoclusters. One of the most important applications of Au nanocrystals in water treatment is the removal of mercury.…”

A selective and easily recyclable dimer based on a calix[4]pyrrole derivative for the removal of mercury(ii) from water

“…Additionally they require large areas, maintenance and operational costs. In recent years a number of papers have been published on new approaches for removing mercury from water using functionalised silica sorbents based on mesoporous materials, 33 nanoparticles [34][35][36][37] and chelating agents. 38 Supramolecular chemistry 39 offers the possibility of producing highly selective receptors which can mimic some of the receptors present in living systems 40 for removing metal ions from water with the additional advantage that these can be easily recyclable, an important issue for the commercialisation of any technology, within this context calixpyrroles (products of the condensation of pyrrole and ketones in acid medium) possess properties of great interest, not the least as extracting agents for removing pollutants from the environment.…”

“…Additionally they require large areas, maintenance and operational costs. In recent years a number of papers have been published on new approaches for removing mercury from water using functionalised silica sorbents based on mesoporous materials, 33 nanoparticles 34–37 and chelating agents. 38 …”

One-step fabrication and characterization of a poly(vinyl alcohol)/silver hybrid nanofiber mat by electrospinning for multifunctional applications

“…11,12 There has been much research in this eld and many technologies have been developed to remove mercury from water. [13][14][15][16][17][18][19][20][21][22] The techniques include adsorption, ion exchange, chemical precipitation, membrane separation, ltration, chemical oxidation or reduction. Among these techniques, adsorption is regarded as the most promising method due to its easy operation and high efficiency.…”

“…Among these techniques, adsorption is regarded as the most promising method due to its easy operation and high efficiency. [13][14][15][16][17] In consequence, various adsorbents have been investigated including active carbon based materials, metal and metal oxides, natural minerals and others. [23][24][25] However, these granular or powdered adsorbents have the drawbacks of difficulty for collection and separation from bulk water, which makes the used adsorbents to readily cause secondary pollution.…”