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Chromium(VI) sorptive removal from aqueous solutions by nanocrystalline akaganèite.
Chemosphere. 2005 Jan; 58(1):65-73.C

Abstract

In this study, akaganeite (beta-FeO(OH)) an ironoxyhydroxide material, was used as a low-cost potential adsorbent for the removal of hexavalent chromium from aqueous solutions. The influence of agitation speed, solution pH, initial chromium concentration, sorbent concentration and temperature were evaluated at batch kinetic runs. It was shown that the solid diffusion model, in comparison to simple reaction kinetic models, described better the sorption kinetics. Freundlich and Frumkin isotherm best fitted the equilibrium results. Akaganeite presented a sorption capacity approximately 80 mg Cr(VI) g(-1), under the conditions studied. Flotation was used as a downstream process for the effective removal of the loaded material.

Authors+Show Affiliations

Lazaridis NK
Division of Chemical Technology, School of Chemistry, Aristotle University, Box 116, GR-54124 Thessaloniki, Greece. nlazarid@chem.auth.gr
Bakoyannakis DN
No affiliation info available
Deliyanni EA
No affiliation info available

MeSH

AdsorptionChromiumFerric CompoundsHydrogen-Ion ConcentrationKineticsTemperatureWaterWater PollutionWater Purification

Pub Type(s)

Comparative Study
Journal Article

Language

eng

PubMed ID

15522334

Citation

Lazaridis, N K., et al. "Chromium(VI) Sorptive Removal From Aqueous Solutions By Nanocrystalline Akaganèite." Chemosphere, vol. 58, no. 1, 2005, pp. 65-73.
Lazaridis NK, Bakoyannakis DN, Deliyanni EA. Chromium(VI) sorptive removal from aqueous solutions by nanocrystalline akaganèite. Chemosphere. 2005;58(1):65-73.
Lazaridis, N. K., Bakoyannakis, D. N., & Deliyanni, E. A. (2005). Chromium(VI) sorptive removal from aqueous solutions by nanocrystalline akaganèite. Chemosphere, 58(1), 65-73.
Lazaridis NK, Bakoyannakis DN, Deliyanni EA. Chromium(VI) Sorptive Removal From Aqueous Solutions By Nanocrystalline Akaganèite. Chemosphere. 2005;58(1):65-73. PubMed PMID: 15522334.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Chromium(VI) sorptive removal from aqueous solutions by nanocrystalline akaganèite. AU - Lazaridis,N K, AU - Bakoyannakis,D N, AU - Deliyanni,E A, PY - 2003/11/11/received PY - 2004/09/06/revised PY - 2004/09/07/accepted PY - 2004/11/4/pubmed PY - 2005/2/5/medline PY - 2004/11/4/entrez SP - 65 EP - 73 JF - Chemosphere JO - Chemosphere VL - 58 IS - 1 N2 - In this study, akaganeite (beta-FeO(OH)) an ironoxyhydroxide material, was used as a low-cost potential adsorbent for the removal of hexavalent chromium from aqueous solutions. The influence of agitation speed, solution pH, initial chromium concentration, sorbent concentration and temperature were evaluated at batch kinetic runs. It was shown that the solid diffusion model, in comparison to simple reaction kinetic models, described better the sorption kinetics. Freundlich and Frumkin isotherm best fitted the equilibrium results. Akaganeite presented a sorption capacity approximately 80 mg Cr(VI) g(-1), under the conditions studied. Flotation was used as a downstream process for the effective removal of the loaded material. SN - 0045-6535 UR - https://www.unboundmedicine.com/medline/citation/15522334/Chromium_VI__sorptive_removal_from_aqueous_solutions_by_nanocrystalline_akagan��ite_ DB - PRIME DP - Unbound Medicine ER -