Abstract
Hydrothermal disposal of sodium arsenate waste was investigated with the aim of removing As from solution, and its precipitation as crystalline iron arsenate. The precipitate was characterized by XRD and SEM, and leach tests were conducted to examine the precipitates solubility. The optimum formation condition for crystalline iron arsenate was pH 0.3–1.7, temperature 150–200°C, Fe/As 1.0 and time 10–40 min. Over 98% arsenic in the waste can be precipitated. The solid product is mainly iron arsenate which has a solubility below 5 mg/l. The preliminary work showed that hydrothermal disposal is a feasible option for treatment of sodium arsenate waste.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
R. G. Robin, J. Y. Huang, T. Nishimura and G. H. Khoe, in “Arsenic Metallurgy Fundamentals and Applications,” edited by R. G. Reddy, J. L. Hendrix and P. B. Queneau (TMS publication, Phoenix, 1988) p. 99.
T. M. Douglas, Environmental Progress 2(1987) 82.
R. J. Bowell, Applied Geochemistry, 9(1994) 279.
C. P. Hung and P. L. K. Fu, J. Water Pollution Control Fed. 56(1984) 233.
D. Evan, I. Socrates and P. George, Water Resources 12(1993) 1773.
A. I. Zouboulis, K. A. Kydros and K. A. Matis, Separation Science and Technology 15/16(1993) 2449.
M. M. Glosh and J. R. Yuan, Environmental Progress 8(1987) 150.
M. Chanda, K. F. Odriscoll and G. L. Rempel, Reactive Polymers, 7(1988) 251.
N. Papassiopi, E. Vircikova, V. Nenov, A. Kontopoulos and L. Molnar, Hydrometallurgy 41(1996) 243.
V. Nenov, A. I. Zouboulis, N. Dimitrova and I. Dobrevsky, Environ. Pollution 83(1994) 283.
J. Barrett, M. N. Hughes, A. N. i slam and C. Simons, “Randol Gold Forum” (Cairns, Australia, 1991) p. 179.
S. Therdkiattikul and D. A. Dahlstrom, “Randol Gold Forum” (Beaver, Creek, Colorado, 1993) p. 373.
E. Vircikova, L. Molnar and P. Lech, Hydrometallurgy 38(1993) 111.
N. Papassiopi, M. Stefanakis and A. Kontopoulos, EMC'94, 1994, p. 203.
R. G. Robins, Metall. Trans. 12B(1981) 103.
T. Nishimura, C. T. Ito and K. Tozawa, in “Arsenic Metallurgy Fundamentals and Applications,” edited by R. G. Reddy, J. L. Hendrix and P. B. Queneau, (TMS publication, Phoenix, 1988) p. 321.
G. B. Harris and S. Monette, in “Arsenic Metallurgy Fundamentals and Applications,” edited by R. G. Reddy, J. L. Hendrix and P. B. Queneau, (TMS publication, Phoenix, 1988) p. 469.
M. T. Emett and G. H. Khoe, in EPD Congress 1994, edited by G. Warren, (TMS Publication, 1994) p. 153.
P. M. Swash and A. J. Monhemius, Hydrometallurgy '94, 1994.
N. Yamasaki and Farao Zhang, in Proceedings of the Second International Conference on Solvothermal Reactions, Organizing Committee Ed., Takamatsu, Japan, 1996, p. 122.
R. S. Kunter and W. E. Bedal, J. Mineral and Metal Society 44(1992) 35.
D. V. Baghurst, J. Barrett and D. M. P. Mingos, J. Chem. Soc., Chem. Commun. 3(1995) 323.
N. Yamasaki, in “Hydrothermal Science Handbook,” 1st ed. (Editing committee of Hydrothermal Science Handbook, Ed., Tokyo, 1997) p. 227.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Yamasaki, N., Zhang, F. A study on hydrothermal disposal of sodium arsenate waste from Ga-As processing. Journal of Materials Science 34, 4017–4022 (1999). https://doi.org/10.1023/A:1004607830565
Issue Date:
DOI: https://doi.org/10.1023/A:1004607830565