dc.creator | Tresintsi, S. | en |
dc.creator | Simeonidis, K. | en |
dc.creator | Estrade, S. | en |
dc.creator | Martinez-Boubeta, C. | en |
dc.creator | Vourlias, G. | en |
dc.creator | Pinakidou, F. | en |
dc.creator | Katsikini, M. | en |
dc.creator | Paloura, E. C. | en |
dc.creator | Stavropoulos, G. | en |
dc.creator | Mitrakas, M. | en |
dc.date.accessioned | 2015-11-23T10:50:16Z | |
dc.date.available | 2015-11-23T10:50:16Z | |
dc.date.issued | 2013 | |
dc.identifier | 10.1021/es4009932 | |
dc.identifier.issn | 0013-936X | |
dc.identifier.uri | http://hdl.handle.net/11615/33702 | |
dc.description.abstract | The development of a single-phase Fe/Mn oxy-hydroxide (delta-Fe0.76Mn0.24OOH), highly efficient at adsorbing both As(III) and As(V), is reported. Its synthesis involves the coprecipitation of FeSO4 and KMnO4 in a kilogram-scale continuous process, in acidic and strongly oxidizing environments. The produced material was identified as a manganese feroxyhyte in which tetravalent manganese is homogeneously distributed into the crystal unit, whereas a second-order hollow spherical morphology is favored. According to this structuration, the oxyhydroxide maintains the high adsorption capacity for As(V) of a single Fe oxy-hydroxide combined with enhanced As(III) removal based on the oxidizing mediation of Mn(IV). Ion-exchange between arsenic species and sulfates as well as the strongly positive surface charge further facilitate arsenic adsorption. Batch adsorption tests performed in natural-like water indicate that Mn(IV)-feroxyhyte can remove 11.7 mu g As(V)/mg and 6.7 mu g As(III)/mg at equilibrium pH 7, before residual concentration overcomes the regulation limit of 10 mu g As/L for drinking water. The improved efficiency of this material, its low cost, and the possibility for scaling-up its production to industry indicate the high practical impact and environmental importance of this novel adsorbent. | en |
dc.source.uri | <Go to ISI>://WOS:000330094700019 | |
dc.subject | EFFECTIVE ARSENITE REMOVAL | en |
dc.subject | X-RAY-ABSORPTION | en |
dc.subject | SYNTHETIC BIRNESSITE | en |
dc.subject | OXY-HYDROXIDES | en |
dc.subject | OXIDATION | en |
dc.subject | FE | en |
dc.subject | ADSORPTION | en |
dc.subject | OXIDE | en |
dc.subject | MN | en |
dc.subject | SPECTROSCOPY | en |
dc.subject | Engineering, Environmental | en |
dc.subject | Environmental Sciences | en |
dc.title | Tetravalent Manganese Feroxyhyte: A Novel Nanoadsorbent Equally Selective for As(III) and As(V) Removal from Drinking Water | en |
dc.type | journalArticle | en |