Fijación de arsénico en fase gas con hematita sólida

E. Balladares, A. González, R. Parra, M. Sánchez

Resultado de la investigación: Contribución a una revistaArtículorevisión exhaustiva

1 Cita (Scopus)

Resumen

Feasibility to obtain ferric arsenate starting from arsenic containing gas in contact with Fe2O3 has been studied. Thermodynamic stability of the system Fe-As-O was analysed in order to verify conditions to form FexAsyOz type compounds. Experiments were made using a hematite sample suspended in a thermogravimetric device. As 4O6 was generated starting from solid As2O 3 which was circulating through the iron oxide. Final samples were analysed chemically and by means of DRX, verifying the formation of FeAsO 4, FeAsO4·H2O and FeAs 4O·(H2O)2 in small quantities. Tests in porous bed and pellets were carried out, studying the effect of: porosity, temperature and oxygen potential. The largest conversion obtained was 10 % at 800°C, pO2 = 50 % and porosity = 0.883.

Título traducido de la contribuciónFixing arsenic contained in a gas phase using solid hematite
Idioma originalEspañol
Páginas (desde-hasta)384-388
Número de páginas5
PublicaciónRevista de Metalurgia (Madrid)
Volumen40
N.º5
DOI
EstadoPublicada - 2004
Publicado de forma externa

Palabras clave

  • Arsenic fixation
  • Environmental contamination
  • Ferric arsenate
  • Smelting off gases
  • Waste treatment

Áreas temáticas de ASJC Scopus

  • Física de la materia condensada
  • Química física y teórica
  • Metales y aleaciones
  • Química de los materiales

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