A Mechanism for Enhancing Removal Rate of Dissolved Iron in Mine Drainage Using Aeration

doi:10.12972/ksmer.2014.51.4.563

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2014 Vol.51, Issue 4 Preview Page Next Page

Research Paper

A Mechanism for Enhancing Removal Rate of Dissolved Iron in Mine Drainage Using Aeration 폭기를 활용한 광산배수 내 용존 철 제거속도 향상 기작: 오참뜻, 지상우, 임길재, 정영욱, 홍지혜
Chamteut Oh, Sangwoo Ji, Giljae Yim, Youngwook Cheong, Ji-hye Hong

31 August 2014. pp. 563-572

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Abstract

Aeration was applied on three different mine drainages to verify the removal rate enhancement of dissolved iron. Equilibrium with the atmosphere accelerated the increase in DO and decrease in DCO2 where the latter affected the eventual increase in pH level. The combined effect of the increase in both DO and pH provided a favorable environment for Fe2+ oxidation and this led to the boost in oxidation rate. Aeration, in this process, played an important role in escalating gas exchange rates by increasing the contact area between mine drainages and the atmosphere. Since Fe2+ oxidation was a rate determining step in removing dissolved iron, aeration could be an effective method to expedite the iron removal in mine drainages. In case of net acidic mine drainages, however, aeration could not boost the treatment efficiency due to lack of decarbonation effect which increases the pH of the mine drainages.

Keywords

Mine drainage

Removal of dissolved iron

Aeration

Decarbonation

Fe2+ oxidation

광산배수 내 용존 철 제거속도를 향상시키기 위한 방법으로 폭기를 활용하고자 서로 다른 특성을 띄는 광산배수를 대상으로 폭기실험을 수행하였다. 대기와의 평형반응을 통해 광산배수 내 DO 농도는 증가하고 DCO2 농도는 감소하게 되는데 탈기된 DCO2는 광산배수의 pH를 상승시킨다. 상승된 DO 농도와 pH 값은 Fe2+가 산화되는데 유리한 환경을 제공하여 Fe2+ 산화속도를 크게 향상시킬 수 있었다. 이 과정에서 폭기는 광산배수-대기 간 접촉면적을 증가시킴으로써 기체교환속도를 큰 폭으로 향상시키는 역할을 하였다. Fe2+의 산화반응은 용존 철 제거과정에서 속도결정단계였으므로 폭기는 광산배수 내 용존 철 제거속도를 향상시키는 효과적인 방법이 될 수 있다. 다만 순 산성을 띄는 광산배수의 경우에는 DCO2 탈기에 의한 pH 증가를 기대할 수 없어 폭기를 통해 광산배수 처리효율을 향상시킬 수 없었다.

키워드

광산배수

용존 철 제거

폭기

DCO2 탈기

Fe2+ 산화

References

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Bigham, J. and Nordstrom, D.K., 2000, “Iron and aluminum hydroxysulfates from acid sulfate waters,” Reviews in Mineralogy and Geochemistry, Vol. 40, No. 1, pp. 351-403.
Cheong, Y.W., Choi, Y., Yim, G.J., Ji, S.W., Park, H.S. and Sim, Y.S., 2012, “Design of flushing systems for removing sludge from limestone aggregates in SAPS,” J. of the Korean Society for Geosystem Engineering, Vol. 49, No. 6, pp. 717-727.
Cravotta III, C., 2007, “Passive aerobic treatment of net- alkaline, iron-laden drainage from a flooded underground anthracite mine, Pennsylvania, USA,” Mine Water Environ, Vol. 26, No. 5, pp. 128-149.
Geroni, J., 2011, Rates and mechanisms of chemical processes affecting the treatment of ferruginous mine water, Ph. D. Thesis, Cardiff University, UK.
Geroni, J., Cravotta III, C. and Sapsford, D., 2012, “Evolution of the chemistry of Fe bearing waters during CO₂ degassing,” Applied Geochemistry, Vol. 27, No. 12, pp. 2335-2347.
Hustwit, C.C., Ackman, T.E. and Erickson, P.E., 1992, “The role of oxygen transfer in acid mine drainage (AMD) treatment,” Water Environment Research, Vol. 64, No. 6, pp. 814-823.
Ji, S., Cheong, Y., Yim, G., Kim, K. and Park, H., 2012, “The treatment efficiency of the oxidation/settling ponds in the passive mine water treatment systems in South Korea,” J. of the Korean Society for Geosystem Engineering, Vol. 49, No. 6, pp. 788-798.
Johnson, D.B. and Hallberg, K.B., 2005, “Acid mine drainage remediation options: a review,” Science of the Total Environment, Vol. 338, No. 1, pp. 3-14.
Kirby, C.S. and Cravotta III, C.A., 2005, “Net alkalinity and net acidity 1: Theoretical considerations,” Applied Geochemistry, Vol. 20, No. 10, pp. 1920-1940.
Kirby, C., Dennis, A. and Kahler, A., 2009, “Aeration to degas CO₂, increase pH, and increase iron oxidation rates for efficient treatment of net alkaline mine drainage,” Applied Geochemistry, Vol. 24, No. 7, pp. 1175-1184.
Lambert, D.C., McDonough, K.M. and Dzombak, D.A., 2004, “Long-term changes in quality of discharge water from abandoned underground coal mines in Uniontown Syncline, Fayaette County, PA, USA,” Water Research, Vol. 38, No. 2, pp. 277-288.
Lee, D.K., Yim, G.J., Cheong, Y.W., Sim, Y.S., Park, H.S. and Ji, W.H., 2008, “Variation of ferrous ion contents in mine drainage by oxidation reaction in water tanks,” J. of the Korean Society for Geosystem Engineering, Vol. 45, No. 5, pp. 546-557.
Menezes, J., Silva, R., Arce, I. and Schneider, I., 2009, “Production of a poly-ferric sulphate chemical coagulant by selective precipitation of iron from acidic coal mine drainage,” Mine Water Environment, Vol. 28, No. 4, pp. 311-314.
Oh, C., Rhee, S., Oh, M. and Park, J., 2012, “Removal characteristics of As (III) and As (V) from acidic aqueous solution by steel making slag,” J. of Hazardous Materials, Vol. 213, pp. 147-155.
Oh, C., Rhee, S., Toshifumi, I., Kon, H., Lee, W. and Park, J., 2010, “Soption characteristics of arsenic on furnace slag by adsorption isotherm and kinetic sorption experiments,” J. of Korean Geotechnical Society, Vol. 26, No. 9, pp. 37-45.
Oh, C., Park, J., Ji, S., Cheong, Y. and Yim, G., 2013, “Investigation of arsenic removal mechanisms using steel making slag by application of geochemical equilibrium model,” J. of the Korean Society for Geosystem Engineering, Vol. 50, No. 2, pp. 241-251.
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Shi, Z., Nurmi, J.T. and Tratnyek, P.G., 2011, “Effects of nano zero-valent iron on oxidation-reduction potential,” Environmental Science & Technology, Vol. 45, No. 4, pp. 1586-1592.
Song, J., Choi, Y., Cheong, Y.W., Yim, G.J. and Park, H.S., 2014, “Design of photovoltaic systems for supplying electric power to aerators in natural purification treatment facilities of acid mine drainage,” J. of the Korean Society of Mineral and Energy Resources Engineers, Vol. 51, No. 1, pp. 19-29.
Yoo, K., Hiroyoshi, N. and Tsunekawa, M., 2010, “Removal of Mn ions by biological co-precipitation of Fe ions,” Geosystem Engineering, Vol. 13, No. 3, pp. 91-96.
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Information

Publisher :The Korean Society of Mineral and Energy Resources Engineers
Publisher(Ko) :한국자원공학회
Journal Title :Journal of the Korean Society of Mineral and Energy Resources Engineers
Journal Title(Ko) :한국자원공학회지
Volume : 51
No :4
Pages :563-572
DOI :https://doi.org/10.12972/ksmer.2014.51.4.563

[1] An, J.M., Lee, H.J., Park, I.S., Kim, K.H. and Choi, S.I., 2010, “A study of Fe removal efficiency of acid mine drainage by physico-chemical treatment,” J. of the Korean Society for Geosystem Engineering, Vol. 47, No. 4, pp. 530-538.

[2] Bigham, J. and Nordstrom, D.K., 2000, “Iron and aluminum hydroxysulfates from acid sulfate waters,” Reviews in Mineralogy and Geochemistry, Vol. 40, No. 1, pp. 351-403.

[3] Cheong, Y.W., Choi, Y., Yim, G.J., Ji, S.W., Park, H.S. and Sim, Y.S., 2012, “Design of flushing systems for removing sludge from limestone aggregates in SAPS,” J. of the Korean Society for Geosystem Engineering, Vol. 49, No. 6, pp. 717-727.

[4] Cravotta III, C., 2007, “Passive aerobic treatment of net- alkaline, iron-laden drainage from a flooded underground anthracite mine, Pennsylvania, USA,” Mine Water Environ, Vol. 26, No. 5, pp. 128-149.

[5] Geroni, J., 2011, Rates and mechanisms of chemical processes affecting the treatment of ferruginous mine water, Ph. D. Thesis, Cardiff University, UK.

[6] Geroni, J., Cravotta III, C. and Sapsford, D., 2012, “Evolution of the chemistry of Fe bearing waters during CO₂ degassing,” Applied Geochemistry, Vol. 27, No. 12, pp. 2335-2347.

[7] Hustwit, C.C., Ackman, T.E. and Erickson, P.E., 1992, “The role of oxygen transfer in acid mine drainage (AMD) treatment,” Water Environment Research, Vol. 64, No. 6, pp. 814-823.

[8] Ji, S., Cheong, Y., Yim, G., Kim, K. and Park, H., 2012, “The treatment efficiency of the oxidation/settling ponds in the passive mine water treatment systems in South Korea,” J. of the Korean Society for Geosystem Engineering, Vol. 49, No. 6, pp. 788-798.

[9] Johnson, D.B. and Hallberg, K.B., 2005, “Acid mine drainage remediation options: a review,” Science of the Total Environment, Vol. 338, No. 1, pp. 3-14.

[10] Kirby, C.S. and Cravotta III, C.A., 2005, “Net alkalinity and net acidity 1: Theoretical considerations,” Applied Geochemistry, Vol. 20, No. 10, pp. 1920-1940.

[11] Kirby, C., Dennis, A. and Kahler, A., 2009, “Aeration to degas CO₂, increase pH, and increase iron oxidation rates for efficient treatment of net alkaline mine drainage,” Applied Geochemistry, Vol. 24, No. 7, pp. 1175-1184.

[12] Lambert, D.C., McDonough, K.M. and Dzombak, D.A., 2004, “Long-term changes in quality of discharge water from abandoned underground coal mines in Uniontown Syncline, Fayaette County, PA, USA,” Water Research, Vol. 38, No. 2, pp. 277-288.

[13] Lee, D.K., Yim, G.J., Cheong, Y.W., Sim, Y.S., Park, H.S. and Ji, W.H., 2008, “Variation of ferrous ion contents in mine drainage by oxidation reaction in water tanks,” J. of the Korean Society for Geosystem Engineering, Vol. 45, No. 5, pp. 546-557.

[14] Menezes, J., Silva, R., Arce, I. and Schneider, I., 2009, “Production of a poly-ferric sulphate chemical coagulant by selective precipitation of iron from acidic coal mine drainage,” Mine Water Environment, Vol. 28, No. 4, pp. 311-314.

[15] Oh, C., Rhee, S., Oh, M. and Park, J., 2012, “Removal characteristics of As (III) and As (V) from acidic aqueous solution by steel making slag,” J. of Hazardous Materials, Vol. 213, pp. 147-155.

[16] Oh, C., Rhee, S., Toshifumi, I., Kon, H., Lee, W. and Park, J., 2010, “Soption characteristics of arsenic on furnace slag by adsorption isotherm and kinetic sorption experiments,” J. of Korean Geotechnical Society, Vol. 26, No. 9, pp. 37-45.

[17] Oh, C., Park, J., Ji, S., Cheong, Y. and Yim, G., 2013, “Investigation of arsenic removal mechanisms using steel making slag by application of geochemical equilibrium model,” J. of the Korean Society for Geosystem Engineering, Vol. 50, No. 2, pp. 241-251.

[18] Oh, S.H., Lee, S.H. and Kim, S., 2009, “A study of the treatment system of mine water of the ventilation adit in the Yeonhwa mine using heterogeneous oxidation,” J. of the Korean Society for Geosystem Engineering, Vol. 46, No. 5, pp. 602-613.

[19] Shi, Z., Nurmi, J.T. and Tratnyek, P.G., 2011, “Effects of nano zero-valent iron on oxidation-reduction potential,” Environmental Science & Technology, Vol. 45, No. 4, pp. 1586-1592.

[20] Song, J., Choi, Y., Cheong, Y.W., Yim, G.J. and Park, H.S., 2014, “Design of photovoltaic systems for supplying electric power to aerators in natural purification treatment facilities of acid mine drainage,” J. of the Korean Society of Mineral and Energy Resources Engineers, Vol. 51, No. 1, pp. 19-29.

[21] Yoo, K., Hiroyoshi, N. and Tsunekawa, M., 2010, “Removal of Mn ions by biological co-precipitation of Fe ions,” Geosystem Engineering, Vol. 13, No. 3, pp. 91-96.

[22] Young, P., 1997, “The longevity of minewater pollution: a basis for decision-making,” Science of the Total Environment, Vol. 194, pp. 457-466.

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