AustralieFrV1, PubMed, Corpus, bibRecord, 001989

Novel chitosan goethite bionanocomposite beads for arsenic remediation.

Identifieur interne : 001989 ( PubMed/Corpus ); précédent : 001988; suivant : 001990

Novel chitosan goethite bionanocomposite beads for arsenic remediation.

Auteurs : Jing He ; Fabrizio Bardelli ; Antoine Gehin ; Ewen Silvester ; Laurent Charlet

Source :

Water research [ 1879-2448 ] ; 2016.

RBID : pubmed:27240296

English descriptors

KwdEn :
- Adsorption, Arsenic (chemistry), Chitosan (chemistry), Hydrogen-Ion Concentration, Kinetics, Water Pollutants, Chemical (chemistry), Water Purification.
MESH :
- chemical , chemistry : Arsenic, Chitosan, Water Pollutants, Chemical.
- Adsorption, Hydrogen-Ion Concentration, Kinetics, Water Purification.

Abstract

We report on the synthesis and As adsorption properties of a novel chitosan - iron (oxyhydr)oxide composite material for the remediation of arsenic-contaminated water supplies. FE-SEM, Mössbauer spectroscopy, ICP-OES and synchrotron (Bulk XAS, μXRF) techniques were applied to determine the composition of the new material and investigate the As uptake efficiency and mechanism. The iron (oxyhydr)oxide phase has been identified as a nano-sized goethite, well dispersed in the chitosan matrix, leading to the name 'chitosan goethite bionanocomposite' (CGB). The CGB material is prepared in the form of beads of high density and excellent compression strength; the embedding of the goethite nanoparticles in the chitosan matrix allows for the high adsorption capacity of nanoparticles to be realized. CGB beads remove both As(III) and As(V) efficiently from water, over the pH range 5-9, negating the need for pre-oxidation of As(III). Kinetic studies and μXRF analysis of CGB bead sections show that diffusion-adsorption of As(V) into CGB beads is faster than for As(III). Using CGB beads, synthetic high-arsenic water (0.5 mg-As/L) could be purified to world drinking standard level (<0.01 mg-As/L) using only 1.4 g/L CGB. When considered in combination with the advantages of the low-cost of raw materials required, and facile (green) synthesis route, CGB is a promising material for arsenic remediation, particularly in developing countries, which suffer a diversity of socio-economical-traditional constraints for water purification and sanitation.

DOI: 10.1016/j.watres.2016.05.032
PubMed: 27240296

Links to Exploration step

pubmed:27240296

Le document en format XML

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<author><name sortKey="He, Jing" sort="He, Jing" uniqKey="He J" first="Jing" last="He">Jing He</name>
<affiliation><nlm:affiliation>School of Resource and Environmental Science, Wuhan University, 129 Luoyu Road, Wuhan 430079, PR China; ISTerre, Université Grenoble Alpes, P.O. Box 53, F 38041 Grenoble, France.</nlm:affiliation>
</affiliation>
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<author><name sortKey="Bardelli, Fabrizio" sort="Bardelli, Fabrizio" uniqKey="Bardelli F" first="Fabrizio" last="Bardelli">Fabrizio Bardelli</name>
<affiliation><nlm:affiliation>ISTerre, Université Grenoble Alpes, P.O. Box 53, F 38041 Grenoble, France.</nlm:affiliation>
</affiliation>
</author>
<author><name sortKey="Gehin, Antoine" sort="Gehin, Antoine" uniqKey="Gehin A" first="Antoine" last="Gehin">Antoine Gehin</name>
<affiliation><nlm:affiliation>ISTerre, Université Grenoble Alpes, P.O. Box 53, F 38041 Grenoble, France.</nlm:affiliation>
</affiliation>
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<author><name sortKey="Silvester, Ewen" sort="Silvester, Ewen" uniqKey="Silvester E" first="Ewen" last="Silvester">Ewen Silvester</name>
<affiliation><nlm:affiliation>Department of Ecology, Environment and Evolution, La Trobe University, Albury-Wodonga, Australia.</nlm:affiliation>
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<author><name sortKey="Charlet, Laurent" sort="Charlet, Laurent" uniqKey="Charlet L" first="Laurent" last="Charlet">Laurent Charlet</name>
<affiliation><nlm:affiliation>ISTerre, Université Grenoble Alpes, P.O. Box 53, F 38041 Grenoble, France; Institut Universitaire de France, 103, bd Saint-Michel, 75005 Paris, France. Electronic address: charlet38@gmail.com.</nlm:affiliation>
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<affiliation><nlm:affiliation>School of Resource and Environmental Science, Wuhan University, 129 Luoyu Road, Wuhan 430079, PR China; ISTerre, Université Grenoble Alpes, P.O. Box 53, F 38041 Grenoble, France.</nlm:affiliation>
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<author><name sortKey="Bardelli, Fabrizio" sort="Bardelli, Fabrizio" uniqKey="Bardelli F" first="Fabrizio" last="Bardelli">Fabrizio Bardelli</name>
<affiliation><nlm:affiliation>ISTerre, Université Grenoble Alpes, P.O. Box 53, F 38041 Grenoble, France.</nlm:affiliation>
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<author><name sortKey="Silvester, Ewen" sort="Silvester, Ewen" uniqKey="Silvester E" first="Ewen" last="Silvester">Ewen Silvester</name>
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<author><name sortKey="Charlet, Laurent" sort="Charlet, Laurent" uniqKey="Charlet L" first="Laurent" last="Charlet">Laurent Charlet</name>
<affiliation><nlm:affiliation>ISTerre, Université Grenoble Alpes, P.O. Box 53, F 38041 Grenoble, France; Institut Universitaire de France, 103, bd Saint-Michel, 75005 Paris, France. Electronic address: charlet38@gmail.com.</nlm:affiliation>
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<series><title level="j">Water research</title>
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<term>Kinetics</term>
<term>Water Pollutants, Chemical (chemistry)</term>
<term>Water Purification</term>
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<front><div type="abstract" xml:lang="en">We report on the synthesis and As adsorption properties of a novel chitosan - iron (oxyhydr)oxide composite material for the remediation of arsenic-contaminated water supplies. FE-SEM, Mössbauer spectroscopy, ICP-OES and synchrotron (Bulk XAS, μXRF) techniques were applied to determine the composition of the new material and investigate the As uptake efficiency and mechanism. The iron (oxyhydr)oxide phase has been identified as a nano-sized goethite, well dispersed in the chitosan matrix, leading to the name 'chitosan goethite bionanocomposite' (CGB). The CGB material is prepared in the form of beads of high density and excellent compression strength; the embedding of the goethite nanoparticles in the chitosan matrix allows for the high adsorption capacity of nanoparticles to be realized. CGB beads remove both As(III) and As(V) efficiently from water, over the pH range 5-9, negating the need for pre-oxidation of As(III). Kinetic studies and μXRF analysis of CGB bead sections show that diffusion-adsorption of As(V) into CGB beads is faster than for As(III). Using CGB beads, synthetic high-arsenic water (0.5 mg-As/L) could be purified to world drinking standard level (<0.01 mg-As/L) using only 1.4 g/L CGB. When considered in combination with the advantages of the low-cost of raw materials required, and facile (green) synthesis route, CGB is a promising material for arsenic remediation, particularly in developing countries, which suffer a diversity of socio-economical-traditional constraints for water purification and sanitation.</div>
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<Abstract><AbstractText>We report on the synthesis and As adsorption properties of a novel chitosan - iron (oxyhydr)oxide composite material for the remediation of arsenic-contaminated water supplies. FE-SEM, Mössbauer spectroscopy, ICP-OES and synchrotron (Bulk XAS, μXRF) techniques were applied to determine the composition of the new material and investigate the As uptake efficiency and mechanism. The iron (oxyhydr)oxide phase has been identified as a nano-sized goethite, well dispersed in the chitosan matrix, leading to the name 'chitosan goethite bionanocomposite' (CGB). The CGB material is prepared in the form of beads of high density and excellent compression strength; the embedding of the goethite nanoparticles in the chitosan matrix allows for the high adsorption capacity of nanoparticles to be realized. CGB beads remove both As(III) and As(V) efficiently from water, over the pH range 5-9, negating the need for pre-oxidation of As(III). Kinetic studies and μXRF analysis of CGB bead sections show that diffusion-adsorption of As(V) into CGB beads is faster than for As(III). Using CGB beads, synthetic high-arsenic water (0.5 mg-As/L) could be purified to world drinking standard level (<0.01 mg-As/L) using only 1.4 g/L CGB. When considered in combination with the advantages of the low-cost of raw materials required, and facile (green) synthesis route, CGB is a promising material for arsenic remediation, particularly in developing countries, which suffer a diversity of socio-economical-traditional constraints for water purification and sanitation.</AbstractText>
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Novel chitosan goethite bionanocomposite beads for arsenic remediation.

Novel chitosan goethite bionanocomposite beads for arsenic remediation.

Source :

English descriptors

Abstract

Links to Exploration step

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri

Pour générer des pages wiki