Arsenic removal using hydrous nanostructure iron(III)–titanium(IV) binary mixed oxide from aqueous solution

Gupta, Kaushik; Ghosh, Uday Chand

doi:10.1016/j.jhazmat.2008.04.034

Cited by 224 publications

(127 citation statements)

References 40 publications

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“…In the case of nanoparticles and metal interactions, the scientific knowledge is most developed, and typically adsorption is presented as the main mechanism. For instance, Langmuir and Freundlich isotherms have been proposed for arsenic removal [16] and in some cases organic modifications of the nanoparticles have been synthesized to enhance the metal removal efficiency [17].…”

Section: Heavy Metals Removal In Water Streamsmentioning

confidence: 99%

Ecotoxicity of, and remediation with, engineered inorganic nanoparticles in the environment

Sánchez¹,

Recillas²,

Font³

et al. 2011

TrAC Trends in Analytical Chemistry

122

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This study presents the recent developments on the use of inorganic nanoparticles for environmental remediation in soil, water and gas polluted streams. The number of publications on these topics has grown exponentially in recent years, especially those focused on the wastewater treatment. Among them, the removal of heavy metals has become the most popular, although some works are related to the use of nanomaterials for the elimination of nutrients such as nitrogen and some persistent organic pollutants.However, this growth has not been accompanied by the knowledge about the behavior of nanoparticles once used and released to the environment. The current situation of nanoparticles toxicology (nanotoxicology) is also commented in this study. It is remarkable the high number of different toxicology tests that have been applied to nanoparticles, which often makes the results very difficult to interpret or generalize.Bioluminescence test, Daphnia magna and other published tests are analyzed in detail, jointly with some preliminary results obtained in our works.

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Section: Heavy Metals Removal In Water Streamsmentioning

confidence: 99%

Ecotoxicity of, and remediation with, engineered inorganic nanoparticles in the environment

Sánchez¹,

Recillas²,

Font³

et al. 2011

TrAC Trends in Analytical Chemistry

122

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show abstract

“…Recently, the development of composite adsorbents containing iron oxide has gained considerable attention [18][19][20], since they have advantages over these components. For examples, an Fe-Ce bimetal oxide adsorbent synthesized by Zhang et al [18] exhibited a much higher As(V) adsorption capacity than individual Ce and Fe oxides is prepared by the same procedure.…”

Section: Introductionmentioning

confidence: 99%

“…A novel Fe-Mn binary oxide adsorbent developed by Zhang et al [19] demonstrated enhanced arsenite removal through oxidization and then adsorption. Gupta and Ghosh [20] reported the synthesis and use of Fe-Ti binary mixed oxide for arsenic sorption.…”

Section: Introductionmentioning

confidence: 99%

Adsorptive removal of arsenic from water by an iron–zirconium binary oxide adsorbent

Ren

Zhang

Chen

2011

Journal of Colloid and Interface Science

253

100

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a b s t r a c tArsenate and arsenite may exist simultaneously in groundwater and have led to a greater risk to human health. In this study, an iron-zirconium (Fe-Zr) binary oxide adsorbent for both arsenate and arsenite removal was prepared by a coprecipitation method. The adsorbent was amorphous with a specific surface area of 339 m 2 /g. It was effective for both As(V) and As(III) removal; the maximum adsorption capacities were 46.1 and 120.0 mg/g at pH 7.0, respectively, much higher than for many reported adsorbents. Both As(V) and As(III) adsorption occurred rapidly and achieved equilibrium within 25 h, which were well fitted by the pseudo-second-order equation. Competitive anions hindered the sorption according to the sequence PO 4 . The ionic strength effect experiment, measurement of zeta potential, and FTIR study indicate that As(V) forms inner-sphere surface complexes, while As(III) forms both inner-and outer-sphere surface complexes at the water/Fe-Zr binary oxide interface. The high uptake capability and good stability of the Fe-Zr binary oxide make it a potentially attractive adsorbent for the removal of both As(V) and As(III) from water.

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“…With this methodology As +3 and As +5 could be eliminated from drinking water supplies employing iron oxide INPs, which involved the formation of weak arsenic-iron oxide complexes at INP's surface. An overview on the use of nano-size iron particles for environmental remediation has been reported by Zhang et al (Zhang, 2003) Furthermore, the incorporation of some other metal ions, such as TiO 2 , into the lattice structure of iron oxide enhances the material properties namely surface adsorption and photo-induced catalysis (Gupta & Ghosh, 2009). The surface functionalization is also a very important factor in environmental remediation since it can enhance the affinity towards specific target molecules.…”

Section: Adsorption Alloying and Environmental Remediationmentioning

confidence: 99%

The Reactivity of Colloidal Inorganic Nanoparticles

Bastús¹,

Casals²,

Ojea³

et al. 2012

The Delivery of Nanoparticles

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Arsenic removal using hydrous nanostructure iron(III)–titanium(IV) binary mixed oxide from aqueous solution

Cited by 224 publications

References 40 publications

Ecotoxicity of, and remediation with, engineered inorganic nanoparticles in the environment

Ecotoxicity of, and remediation with, engineered inorganic nanoparticles in the environment

Adsorptive removal of arsenic from water by an iron–zirconium binary oxide adsorbent

The Reactivity of Colloidal Inorganic Nanoparticles

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