Adsorption mechanism of selenium(VI) onto maghemite

Jordan, Norbert; Ritter, A.; Foerstendorf, Harald; Scheinost, Andreas C.; Weiß, Stephan; Heim, Karsten; Grenzer, J.; Mücklich, A.; Reuther, H.

doi:10.1016/j.gca.2012.09.048

Cited by 97 publications

(61 citation statements)

References 69 publications

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“…Arsenic removal is the most studied case of magnetic iron oxides application in water treatment. 158,159,160,161,162,163,164,165,166 A number of publications for the removal of As, Cr(VI), Cu 2+ , Se and Co 2+ suggest ferrite nanoparticles as a magnetically activated system for water treatment. 102 In these studies, the adsorption capacity was getting higher following the decrease in the dimensions of nanoparticles.…”

Section: Removal Of Heavy Metalsmentioning

confidence: 99%

Inorganic engineered nanoparticles in drinking water treatment: a critical review

Simeonidis

Mourdikoudis

Kaprara

et al. 2016

Environ. Sci.: Water Res. Technol.

177

103

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The interest of the scientific community in the potential applications of inorganic engineered nanoparticles for drinking water treatment is continuously increasing. This review paper is an up to date summary of recent research progress in this field with respect to the removal of heavy metals, microorganisms and organic pollutants. In parallel, a critical investigation on the applicability of developed nanomaterials is attempted, considering the economic viability, environmental safety and sustainability of proposed processes. On this, the manuscript discusses issues like the stability and fate of engineered nanoparticles during and after use whereas it suggests a generalized approach for excluding reliable and comparable results by laboratory experiments. AbstractThis review summarizes recent research in the field of inorganic engineered nanoparticles development with direct or potential interest for drinking water treatment. The incorporation of engineered nanoparticles in drinking water treatment technologies against the removal of heavy metals, microorganisms and organic pollutants appears as a very dynamic branch of nanotechnology. Nanoparticles owe their potential on the high specific surface area and surface reactivity compared to conventional bulk materials. Depending on the mechanism of uptake, nanoparticles can be designed to establish high selectivity against specific pollutants and provide the required efficiency for application. However, despite early encouraging results, nanoparticles meet a number of limitations to get promoted and become part of large-scale water treatment plants. The most important is their availability in the required large quantities and their efficiency to fulfil the strict regulations for drinking water consumption and environmental safety. Both deal with the particles preparation cost and the cost of treatment operation with respect to the increase of supplied water price for the consumers. Under this view, this work attempts to evaluate reported studies according to their possibility to meet reliable requirements of water technology and also suggests an experimental approach to allow validation of tested nanoparticles.

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Section: Removal Of Heavy Metalsmentioning

confidence: 99%

Inorganic engineered nanoparticles in drinking water treatment: a critical review

Simeonidis

Mourdikoudis

Kaprara

et al. 2016

Environ. Sci.: Water Res. Technol.

177

103

View full text Add to dashboard Cite

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“…It has been reported that the adsorption of anions at the oxide/water interfaces is generally assumed to take place via a surface complexation mechanism. [21][22][23][24][25][26][27][28][29][30][31][32][33][34] No reports have been published to date on the relationship between Bayer electrofilter fines (BEFs) and their ability to adsorb selenate ions. The aim of this study is to examine the adsorption of selenate ions from an aqueous solution onto BEFs.…”

Section: àmentioning

confidence: 99%

Bayer Electrofilter Fines as Potential Se(VI) Adsorbents

Ayala

Fernández

2015

JOM

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“…These oxyanions are known to form complexes with organic matter, and adsorb to Fe-oxyhydroxides and clay minerals [40][41][42][43][44][45][46] . Selenite has a similar affinity for sorption on haematite, goethite and amorphous ferric oxide 47 , and selenate has been found to form inner-sphere surface complexes on haematite and a mixture of inner-and outer-sphere surface complexes on goethite and hydrous ferric oxide 40 .…”

Section: )mentioning

confidence: 99%

Terrestrial selenium distribution in China is potentially linked to monsoonal climate

et al. 2014

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The prevalence of terrestrial environments low in the essential trace element selenium (Se) results in large-scale Se deficiency worldwide. However, the underlying processes leading to Se-depleted environments have remained elusive. Here we show that over the last 6.8 million years (Ma) climatic factors have played a key role in the Se distribution in loess-paleosol sequences in the Chinese Loess Plateau (CLP), which lies in a severely Se-depleted region with a history of Se deficiency-related diseases. We use a combination of geochemical and paleoclimate data to demonstrate that during interglacial periods between 2.30 and 0.16 Ma, variations in the Se concentration in the CLP are potentially related to variability in Se input via East Asian monsoon-derived precipitation. Our results identify precipitation as an important controlling factor of Se distribution in monsoonal China. We suggest that atmospheric Se inputs via precipitation could also play an important role in other regions worldwide.

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Adsorption mechanism of selenium(VI) onto maghemite

Cited by 97 publications

References 69 publications

Inorganic engineered nanoparticles in drinking water treatment: a critical review

Inorganic engineered nanoparticles in drinking water treatment: a critical review

Bayer Electrofilter Fines as Potential Se(VI) Adsorbents

Terrestrial selenium distribution in China is potentially linked to monsoonal climate

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