Fijación de arsénico en fase gas con hematita sólida

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

doi:10.3989/revmetalm.2004.v40.i5.293

Fijación de arsénico en fase gas con hematita sólida

Translated title of the contribution: Fixing arsenic contained in a gas phase using solid hematite

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

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

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 Fe_xAs_yO_z 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.

Translated title of the contribution	Fixing arsenic contained in a gas phase using solid hematite
Original language	Spanish
Pages (from-to)	384-388
Number of pages	5
Journal	Revista de Metalurgia
Volume	40
Issue number	5
DOIs	https://doi.org/10.3989/revmetalm.2004.v40.i5.293
State	Published - 2004
Externally published	Yes

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10.3989/revmetalm.2004.v40.i5.293

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@article{89cae8489db5411cb5ec56cee8c9d01d,

title = "Fijaci{\'o}n de ars{\'e}nico en fase gas con hematita s{\'o}lida",

abstract = "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.",

keywords = "Arsenic fixation, Environmental contamination, Ferric arsenate, Smelting off gases, Waste treatment",

author = "E. Balladares and A. Gonz{\'a}lez and R. Parra and M. S{\'a}nchez",

year = "2004",

doi = "10.3989/revmetalm.2004.v40.i5.293",

language = "Spanish",

volume = "40",

pages = "384--388",

journal = "Revista de Metalurgia",

issn = "0034-8570",

publisher = "CSIC Consejo Superior de Investigaciones Cientificas",

number = "5",

}

TY - JOUR

T1 - Fijación de arsénico en fase gas con hematita sólida

AU - Balladares, E.

AU - González, A.

AU - Parra, R.

AU - Sánchez, M.

PY - 2004

Y1 - 2004

N2 - 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.

AB - 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.

KW - Arsenic fixation

KW - Environmental contamination

KW - Ferric arsenate

KW - Smelting off gases

KW - Waste treatment

UR - https://www.scopus.com/pages/publications/12744281841

U2 - 10.3989/revmetalm.2004.v40.i5.293

DO - 10.3989/revmetalm.2004.v40.i5.293

M3 - Article

AN - SCOPUS:12744281841

SN - 0034-8570

VL - 40

SP - 384

EP - 388

JO - Revista de Metalurgia

JF - Revista de Metalurgia

IS - 5

ER -

Fijación de arsénico en fase gas con hematita sólida

Abstract

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