As(V) removal from aqueous media using alfa-MnO2 nanorods-impregnated Laterite composite adsorbents

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F12%3A43891647" target="_blank" >RIV/60461373:22340/12:43891647 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60461373:22330/12:43891647 RIV/60461373:22320/12:43891647

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.materresbull.2011.10.004" target="_blank" >http://dx.doi.org/10.1016/j.materresbull.2011.10.004</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.materresbull.2011.10.004" target="_blank" >10.1016/j.materresbull.2011.10.004</a>

Jazyk výsledku

angličtina

Název v původním jazyce

As(V) removal from aqueous media using alfa-MnO2 nanorods-impregnated Laterite composite adsorbents

Popis výsledku v původním jazyce

We present a novel way of enhancing the utility of low cost readily available Laterite by impregnating it with the alfa-MnO2nanorods, thus making a composite material suitable for the removal of As(V) from aqueous media. The composites were synthesized by two methods: (i) ball-milling of a physical blend of laterite with pre-synthesised MnO2; and (i) in-situ formation of MnO2 in the presence of laterite. The BET surface area of composites prepared by both methods was markedly higher compared to un-modified laterite, and the presence of MnO2 in the composite was also confirmed by XRD analysis and TEM microscopy. The adsorption capacity for As(V) was found to be highly pH dependent and the adsorption kinetics followed a pseudo second-order kinetic model.The Langmuir adsorption isotherm was found to be the best model to describe the adsorption equilibrium of As(V) onto un-modified laterite as well both ball-milled in-situ formed composite. The adsorption capacities at room temperature an

Název v anglickém jazyce

As(V) removal from aqueous media using alfa-MnO2 nanorods-impregnated Laterite composite adsorbents

Popis výsledku anglicky

We present a novel way of enhancing the utility of low cost readily available Laterite by impregnating it with the alfa-MnO2nanorods, thus making a composite material suitable for the removal of As(V) from aqueous media. The composites were synthesized by two methods: (i) ball-milling of a physical blend of laterite with pre-synthesised MnO2; and (i) in-situ formation of MnO2 in the presence of laterite. The BET surface area of composites prepared by both methods was markedly higher compared to un-modified laterite, and the presence of MnO2 in the composite was also confirmed by XRD analysis and TEM microscopy. The adsorption capacity for As(V) was found to be highly pH dependent and the adsorption kinetics followed a pseudo second-order kinetic model.The Langmuir adsorption isotherm was found to be the best model to describe the adsorption equilibrium of As(V) onto un-modified laterite as well both ball-milled in-situ formed composite. The adsorption capacities at room temperature an

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

DJ - Znečištění a kontrola vody

OECD FORD obor

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Projekt

—

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2012

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Materials Research Bulletin

ISSN

0250-4707

e-ISSN

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Svazek periodika

47

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

9

Strana od-do

42-50

Kód UT WoS článku

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EID výsledku v databázi Scopus

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