Literature DB >> 19818554

Sorption of Cr(VI) onto natural iron and aluminum (oxy)hydroxides: effects of pH, ionic strength and initial concentration.

Omar Ajouyed1, Charlotte Hurel, Mohammed Ammari, Laïla Ben Allal, Nicolas Marmier.   

Abstract

The aim of this work is to study the performances of removal of hexavalent chromium from aqueous solution by three different oxy-hydroxides: hematite, goethite and alpha-alumina. Batch experiments were conducted to measure the effects on adsorption of Cr(VI) of different parameters such as pH of the medium, ionic strength, and initial concentration. Results showed that the adsorption of Cr(VI) depends strongly on the pH, but is independent of ionic strength for hematite and goethite. For alpha-alumina, adsorption is strongly dependent on pH values and ionic strength. Equilibrium studies showed that Cr(VI) had a high affinity in an acidic medium, but decreased as solution pH increased. Equilibrium isotherms were measured experimentally. Results were analyzed by the Langmuir and Freundlich equations using linearized correlation coefficient at room temperature. The characteristic parameters for each isotherm have been determined. Langmuir equation was found to fit the equilibrium data for Cr(VI) adsorption.

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Year:  2009        PMID： 19818554     DOI： 10.1016/j.jhazmat.2009.09.096

Source DB:  PubMed          Journal:  J Hazard Mater        ISSN： 0304-3894            Impact factor:   10.588


  6 in total

1.  Characteristics of the Properties of Absodan Plus Sorbent and Its Ability to Remove Phosphates and Chromates from Aqueous Solutions.

Authors:  Eleonora Sočo; Andżelika Domoń; Dorota Papciak; Magdalena M Michel; Bogumił Cieniek; Dariusz Pająk
Journal:  Materials (Basel)       Date:  2022-05-15       Impact factor: 3.748

2.  Sorption of Cr(III) and Cr(VI) to High and Low Pressure Synthetic Nano-Magnetite (Fe3O4)Particles.

Authors:  Jason G Parsons; Jeffrey Hernandez; Christina M Gonzalez; J L Gardea-Torresdey
Journal:  Chem Eng J       Date:  2014-10-15       Impact factor: 13.273

3.  Thermodynamics, Kinetics, and Activation energy Studies of the sorption of chromium(III) and chromium(VI) to a Mn3O4 nanomaterial.

Authors:  Yvette Cantu; Abril Remes; Alejandra Reyna; Denise Martinez; Jahaziel Villarreal; Hilda Ramos; Samantha Trevino; C Tamez; A Martinez; T Eubanks; J G Parsons
Journal:  Chem Eng J       Date:  2014-10-15       Impact factor: 13.273

4.  Study of the thermodynamics of chromium(III) and chromium(VI) binding to iron(II/III)oxide or magnetite or ferrite and magnanese(II) iron (III) oxide or jacobsite or manganese ferrite nanoparticles.

Authors:  Steven Luther; Nathan Brogfeld; Jisoo Kim; J G Parsons
Journal:  J Colloid Interface Sci       Date:  2013-03-13       Impact factor: 8.128

5.  Quantifying heavy metals sequestration by sulfate-reducing bacteria in an Acid mine drainage-contaminated natural wetland.

Authors:  John W Moreau; John H Fournelle; Jillian F Banfield
Journal:  Front Microbiol       Date:  2013-03-12       Impact factor: 5.640

6.  The Characterization of Ukrainian Volcanic Tuffs from the Khmelnytsky Region with the Theoretical Analysis of Their Application in Construction and Environmental Technologies.

Authors:  Yuliia Trach; Victor Melnychuk; Magdalena Maria Michel; Lidia Reczek; Tadeusz Siwiec; Roman Trach
Journal:  Materials (Basel)       Date:  2021-12-14       Impact factor: 3.623
  6 in total

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