Advertisement

Hyperfine Interactions

, Volume 195, Issue 1–3, pp 35–41 | Cite as

Magnetic minerals from volcanic Ultisols as heterogeneous Fenton catalysts

  • S. Aravena
  • C. Pizarro
  • M. A. Rubio
  • L. C. D. Cavalcante
  • V. K. Garg
  • M. C. Pereira
  • J. D. Fabris
Article

Abstract

This study was devoted to the evaluation of the effectiveness of Fenton catalysts, based on magnetically-concentrated portions of iron oxide-rich sand fractions from two magnetic Ultisols, derived from volcanic materials of southern Chile. The samples were labeled according to the municipality where the sample sites are geographically located, namely Metrenco and Collipulli, and were characterized with Mössbauer spectroscopy at 298 K and saturation magnetization (σ) measurements. Mössbauer data revealed a complex magnetic hyperfine structure for these magnetic portions from both soil-sand materials, suggesting relatively complex mineral assemblages. The monitored rate of H2O2 decomposition via heterogeneous Fenton reaction revealed that materials from the Collipulli soil are more efficient Fenton catalyst than are those from the Metrenco soil. The reasons for these differences are from now on being explored on basis of a more detailed chemical investigation of these samples.

Keywords

Iron oxides Environment Magnetite Catalysis Soil 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    Segura, C., Zaror, C., Mansilla, H.D., Mondaca, M.A.: Imidacloprid oxidation by photo-Fenton reaction. J. Hazard. Mater. 150(3), 679–686 (2008)CrossRefGoogle Scholar
  2. 2.
    Bigda, R.J.: Consider Fenton’s chemistry for wastewater treatment. Chem. Eng. Prog. 91(12), 62–66 (1995)Google Scholar
  3. 3.
    Kabita, D., Subrata, M., Sekhar, B., Basab, Ch.: Chemical oxidation of methylene blue using a Fenton-like reaction. J. Hazard. Mater. B84, 57–71 (2001)Google Scholar
  4. 4.
    Pereira, M.C., Tavares, C.M., Fabris, J.D., Lago, R.M., Murad, E., Criscuolo, P.S.: Characterization of a tropical soil and a waste from kaolin mining and their suitability as heterogeneous catalysts for Fenton and Fenton-like reactions. Clay Miner. 42, 299–306 (2007)CrossRefGoogle Scholar
  5. 5.
    Moya, S.A., Flores, A., Escudey, M., Venegas, R., Castello, G., Latorre, R.: Mössbauer spectroscopy for the characterization of soils used as catalysts. Hyperfine Interact. 67, 581–586 (1991)CrossRefADSGoogle Scholar
  6. 6.
    Pizarro, C., Escudey, M., Moya, S.A., Fabris, J.D.: Iron oxides from volcanic soils as potential catalysts in the water gas shift reaction. In: American Institute of Physics, AIP, vol. 765, pp. 56–59. Melville, NY (2005)Google Scholar
  7. 7.
    Pizarro, C., Escudey, M., Fabris, J.D.: Influence of organic matter on the iron oxide mineralogy of volcanic soils. Hyperfine Interact. 148/149, 53–59 (2003)CrossRefADSGoogle Scholar
  8. 8.
    Borquez, M.: Extracción de óxidos de hierro no cristalinos en suelos volcánicos a través de métodos químicos disolutivos. Chemical Engineering Thesis, p. 73, Universidad de Santiago de Chile (2005)Google Scholar
  9. 9.
    Coey, J.M.D., Cugat, O., McCauley, J., Fabris, J.D.: A portable soil magnetometer. Rev. Fis. Apl. Instrum. 7(1), 25–29 (1992)Google Scholar
  10. 10.
    Pizarro, C., Escudey, M., Fabris, J.D., Almeida, A.B.: Iron-rich spinel phases from the sand fraction of three Chilean soils developing on volcanic materials. Commun. Soil Sci. Plant Anal. 32(17–18), 2741–2754 (2001)CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media B.V. 2009

Authors and Affiliations

  • S. Aravena
    • 1
  • C. Pizarro
    • 1
  • M. A. Rubio
    • 1
  • L. C. D. Cavalcante
    • 2
    • 4
  • V. K. Garg
    • 3
  • M. C. Pereira
    • 4
  • J. D. Fabris
    • 4
  1. 1.Facultad de Química y BiologíaUSACHSantiagoChile
  2. 2.Centro de Ciências da NaturezaUniversidade Federal do PiauíTeresinaBrazil
  3. 3.Instituto de FísicaUniversidade de BrasíliaBrasíliaBrazil
  4. 4.Departamento de QuímicaICEx-UFMGBelo HorizonteBrazil

Personalised recommendations