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Reutilization of porous sintered hematite bodies as effective adsorbents for arsenic(V) removal from water
Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, Geovetenskap och miljöteknik.ORCID-id: 0000-0003-4292-6752
Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, Kemiteknik.ORCID-id: 0000-0003-4582-0902
Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, Geovetenskap och miljöteknik.ORCID-id: 0000-0002-1442-1573
Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, Kemiteknik.ORCID-id: 0000-0002-4755-5754
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2014 (engelsk)Inngår i: Industrial & Engineering Chemistry Research, ISSN 0888-5885, E-ISSN 1520-5045, Vol. 53, nr 32, s. 12689-12696Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

A method was developed to enhance the arsenic adsorption capacity of porous bodies of sintered hematite. The method comprised the formation of a coating of 1 wt % iron oxide nanoparticles on the raw material. The nanoparticles showed two distinct habits: spherical habit, likely ferrihydrite, and acicular habit, likely goethite and/or akaganéite. The specific surface area of the hematite raw material increased from 0.5 to 3.75 m2/g, and the adsorption capacity increased from negligible to 0.65 mg of [As]/g as calculated from equilibrium and breakthrough adsorption data. Equilibrium adsorption data of arsenate on the adsorbent from a solution at pH 5 followed the Langmuir model, while breakthrough adsorption data for a 500 μg/L arsenate solution at pH 5 followed the Thomas model. The adsorbed arsenic could be desorbed using distilled water at pH 12. These results show the potential for the reutilization of waste products comprising coarse hematite bodies as adsorbents.

sted, utgiver, år, opplag, sider
2014. Vol. 53, nr 32, s. 12689-12696
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Kemisk teknologi; Avfallsteknik
Identifikatorer
URN: urn:nbn:se:ltu:diva-6637DOI: 10.1021/ie500919dISI: 000340441000015Scopus ID: 2-s2.0-84906217497Lokal ID: 4e1edad8-018d-4255-981b-e4927fbc051cOAI: oai:DiVA.org:ltu-6637DiVA, id: diva2:979523
Merknad
Validerad; 2014; 20140826 (magr)Tilgjengelig fra: 2016-09-29 Laget: 2016-09-29 Sist oppdatert: 2023-09-05bibliografisk kontrollert

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Carabante, IvanMouzon, JohanneKumpiene, JurateGrahn, MattiasHedlund, Jonas

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