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Aquatic Geochemistry

, Volume 2, Issue 1, pp 81–105 | Cite as

Precipitation of Fe and Al compounds from the acid mine waters in the dogyae area, Korea: A qualitative measure of equilibrium modeling applicability and neutralization capacity?

  • Jae-Young Yu
Article

Abstract

To investigate the applicability of equilibrium modeling for the estimation of the chemical changes of acid mine waters, the phases predicted to precipitate by equilibrium calculation were compared with what actually precipitates from the stream and acid mine waters in the Dogyae area, Korea. The computer program MINTEQA2 was used for the equilibrium calculations based on the chemical compositional data of the water samples collected in the study area. XRD, IR, thermal and chemical analyses of the collected precipitates were performed to identify their phases.

The results of the identification of the collected precipitates are inconsistent with what the equilibrium calculations predict. The equilibrium calculations indicate that ferrihydrite, FeOHSO4, gibbsite, and AlOHSO4 should precipitate from the stream and acid mine waters in the study area. However, the experimental analyses show that only ferrihydrite and Al4(OH)10SO4 are the recognizable precipitates on the bottom of the stream and mine drainage channels. Comparing the stability relations among the possible precipitates with the field occurrence of the precipitates in the study area suggests that FeOHSO4 and AIOHSO4 are kinetically inhibited to precipitate and metastable ferrihydrite and Al4(OH)10SO4 appear in their stability field instead. It indicates that the chemical compositional change of the waters due to the solid phase precipitation in the study area must be interpreted and predicted in terms of the precipitation of not the phases predicted by the equilibrium calculation but the actually identified ones.

Assuming that the dissolved species in the aqueous phase are in equilibrium with respect to the currently precipitating solid phases in the study area, the water chemistries are attempted to interpret based on the plot of the theoretically calculated activities of the dissolved species on the stability diagram for the identified precipitates and gibbsite. The plot reveals a few evolution paths of the chemical composition of the acid mine water as the acid generation and neutralization progress. The evolution path producing ferrihydrite and then Al4(OH)10SO4 precipitation suggests that the system including acid producing pyrite has lost significant amounts of its neutralizing capacity and thus, become intolerable to the impacts from acid mine water.

Key words

Equilibrium modeling kinetic inhibition acid mine water neutralizing capacity precipitation 

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References

  1. Allison J.D., Brown D.S. and Novo-Gradac K.J. (1991) MINTEQA2/PRODEFA2, A Geochemical Assessment Model for Environmental Systems: Version 3.0 User's Manual. EPA/600/3–91/021, EPA, Athens.Google Scholar
  2. van Breemen N. (1973) Dissolved aluminum in acid sulfate soils and in acid mine waters. Soil Sciences Society of America, Proceedings 37, 694–697.PubMedGoogle Scholar
  3. Bigham J.M., Schwertmann U. Carson L. and Murad E. (1990) A poorly crystallized oxyhydroxysulfate of iron formed by bacterial oxidation of Fe(II) in acid mine waters. Geochimica et Cosmochimica Acta 54, 2743–2758.Google Scholar
  4. Brown K.P. (1991) Modeling of speciation, transport and transformation of metals from mine waters. Ecological Modeling 57, 65–89.Google Scholar
  5. Davies C.W. (1962) Ion Association. Butterworths Publications, Washington D.C.Google Scholar
  6. Faure G. (1991) Principles and Applications of Inorganic Geochemistry. Macmillan Publishing Co., New York.Google Scholar
  7. Jones B.F., Kennedy V.C. and Zellweger G.W. (1974) Comparison of observed and calculated concentrations of dissolved Al and Fe in stream water. Water Resources Research 10, 791–793.Google Scholar
  8. Lazaroff N., Sigal W. and Wasserman A. (1982) Iron oxidation and precipitation of ferric hydroxysulfates by resting Thiobacillus ferrooxidans cells. Applied Environmental Microbiology 43, 924–938.Google Scholar
  9. Murr L.E. and Mehta A.P. (1982) Coal desulfurization by leaching involving acidophyllic and thermophyllic microorganism. Biotechnology and Bioengineering 24, 743–748.Google Scholar
  10. Nordstrom D.K. (1982) The effect of sulfate on aluminum concentrations in natural waters: Some stability relations in the system Al2O3-SO3-H2O at 298 K. Geochimica et Cosmochimica Acta 46, 681–692.Google Scholar
  11. Nordstrom D.K., Jenne E.A. and Ball J.W. (1979) Redox equilibria of iron in acid mine waters. In Chemical Modeling in Aqueous Systems (ed. E.A. Jenne), American Chemical Society Symposium Series, Vol. 93, pp. 51–79.Google Scholar
  12. Ross S.D. (1974) Sulphates and other oxy-anions of group VI. In The Infrared Spectra ofMinerals (ed. VC. Farmer), Mineralogical Society Monograph, Vol. 4, Chap. 18, pp. 423–444. Mineralogical Society, London.Google Scholar
  13. Ryskin Y.I. (1974) The vibrations of protons in minerals: Hydroxyl, water and ammonium. In The Infrared Spectra of Minerals (ed. V.C. Farmer), Mineralogical Society Monograph, Vol. 4, Chap. 9, pp. 137–182. Mineralogical Society, London.Google Scholar
  14. Sanden P. (1991) Estimation and simulation of metal mass transport in an old mining area. Water, Air and Soil Pollution 57, 387–397.Google Scholar
  15. Sengupta M. (1993) Environmental Impacts ofMining: Monitoring, Restoration, and Control. Lewis Publishers, Boca Raton.Google Scholar
  16. Stumm W. and Morgan J.J. (1981) Aquatic Chemistry (2nd Ed.). John Wiley and Sons, New York.Google Scholar
  17. Sullivan P.J. and Yelton J.L. (1988) An evaluation of trace element release associated with acid mine drainage. Environmental Geology and Water Sciences 12, 181–186.Google Scholar
  18. Sullivan P.J., Yelton J.L. and Reddy K.J. (1988) Solubility relationships of aluminum and iron minerals associated with acid mine drainage. Environmental Geology and Water Sciences 11, 283–287.Google Scholar
  19. Todor D.N. (1976) Thermal Analysis of Minerals. Abacus Press, Turnbridge Wells.Google Scholar
  20. Webb J.A. and Sasowsky I.D. (1994) The interaction of acid mine drainage with a carbonate terrane; evidence from the Obey River, north-central Tennessee. Journal of Hydrology 161, 327–346.Google Scholar
  21. Wiggering H. (1993) Sulfide oxidation-an environmental problem within colliery spoil dumps. Environmental Geology 22, 99–105.Google Scholar
  22. Wood W.W. (1976) Guidelines for the collection and field analysis of ground water samples for selected unstable constituents. In USGS WRI Book 1, Chap. D2, pp. 1–24. USGS Print., Washington D.C.Google Scholar
  23. Yu J. (1996) Pollution of Osheepcheon Creek by abandoned coal mine drainage in Dogyae area, eastern part of the Samcheok Coal Field, Korea. Environmental Geology (in press).Google Scholar

Copyright information

© Kluwer Academic Publishers 1996

Authors and Affiliations

  • Jae-Young Yu
    • 1
  1. 1.Department of Geology, College of Natural SciencesKangwon National UniversityChuncheon, Kangwon-DoThe Republic of Korea

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