Environmental Geochemical Characteristics of the Acid Mine Drainage and Stream Sediments in the Abandoned Honam Coal Mine Area, Korea

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(1) , 35, 3 , 241-255, 2002 Econ. Environ. Geol., 35(3), 241-255, 2002.

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(4) . . . . . . . Environmental Geochemical Characteristics of the Acid Mine Drainage and Stream Sediments in the Abandoned Honam Coal Mine Area, Korea Young Seog Park1*, Jong Kyun Kim1, Jin Kim1, Woo Seog Jang1, Ki Hyung Lee2 and Min Su Han3 1. Dept. of Mineral Resource Engineering, Chosun University, Gwangju 501-759, Korea Boknae highschool, Bosung Gun 546-830, Korea 3 National Research Institute of Cultural Properties 2. The purpose of this study is to investigate environmental geochemical characteristics for the acid mine drainage and stream sediments in the abandoned Honam coal mine area. For the chemical analysis, stream water samples were collected at 54 sites and for the mineralogical and chemical analysis, stream sediments samples were collected at 34 sites. Physical and chemical characteristics of stream water were measured at the site and chemical compositions were analyzed by ICP-AES, ICP-MS and IC. Mineralogical characteristics of stream sediments samples were determined using XRD, SEM and EDS. In physical and chemical properties, stream water shows that pH 2.85~8.12, Eh -62~215 mV, EC 0.205~146 ms/m, ER 0.234~255 Ω m, DO 0.03~1068 mg/L and TDS 10.96~1420 mg/L. In chemical compositions, we obtain that K 0.118~3.184 mg/L, Mg 2.1~114.48 mg/L, Ca 2.59~125.02 mg/L, Al 0.01~44.72 mg/L, Fe 0.108~89.49 mg/L and Na 5.45~125.41 mg/L. Stream sediments are commonly composed of quartz, illite and goethite in the result of x-ray diffraction. After heat treatment at 980oC, the hematite peaks are distinctly shown. In consideration of heavy metals (include Fe) for steam sediments, Fe ranges 22575~34713 ppm, Zn 41.66~970.3 ppm, Cd 0.52~52.07 ppm, Cu 1.25~198.5 ppm and Pb 0.43~77.35 ppm.. bandoned Honam coal mine, acid mine drainage, stream sediments, environmental geochemical characteristics, mineralogical characteristics.

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(50) . . The physical and chemical analyses of stream water in the abandoned Honam coal mine area. A area. B area. C area. D area. Units max. Temp.. o. C. Eh. mV. mean. std.. max.. min.. mean. std.. max.. min.. mean. std.. max.. min.. mean. std.. 14.5. 7.5. 11.4. 2.34. 15.3. 10.9. 12.5. 1.73. 13.0. 11.2. 12. 0.81. 16.0. 10.2. 12.7. 2.98. 8.12. 4.54. 5.9. 1.07. 7.88. 6.36. 7.12. 0.5. 6.99. 6.18. 6.46. 0.36. 6.77. 5.72. 6.21. 0.53. 135. -62. 58. 57. 43. -32. 3.3. 25. 51. 11. 37. 18. 74. 22. 49. 26. EC. ms/m. 123.6. 24. 76.07. 21.96. 105.4. 0.205. 50.8. 33.63. 121.6. 3.9. 36.48. 56.97. 12.58. 4.29. 8.49. 4.15. ER. Ωm. 18.93. 4.68. 12.96. 3.37. 24.8. 4.87. 17.35. 8.27. 255. 8.23. 130.56. 113.46. 116.4. 0.234. 65.38. 59.36. DO. mg/L. 12.16. 0.03. 9.695. 3.01. 11.53. 1.28. 8.769. 3.572. 1068. 3.62. 273.2. 529.9. 1029. 10.88. 350.3. 587.7. TDS. mg/L. 1420. 10.96. 443.94. 483.83. 775. 176. 352.33. 232.11. 64. 17. 34.33. 25.813. 49. 17. 33.33. 16.01. NaCl. %. 1.5. 0.04. 0.38. 0.57. 0.3. 0.02. 0.105. 0.109. 0.1. 0. 0.05. 0.07. 0.1. 0. 0.033. 0.057. 11.098. 5.456. 778. 1.352. 125.41. 7.22. 27.435. 43.366. 13.151. 8.893. 11.129. 2.107. 20.649. 10.293. 15.482. 5.178. Na. mg/L. K. mg/L. 3.184. 0.118. 0.821. 0.688. 2.942. 0.9. 1.245. 0.748. 1.014. 0.369. 0.641. 0.271. 1.152. 0.219. 0.632. 0.476. Mg. mg/L. 113.24. 23.52. 48.341. 21.811. 114.48. 24.018. 70.555. 36.057. 112.31. 4.281. 33.219. 52.776. 3.59. 2.451. 2.965. 0.577. Ca. mg/L. 103.08. 33.674. 59.204. 20.15. 125.02. 31.05. 71.889. 39.935. 80.268. 6.287. 25.807. 36.348. 12.451. 5.16. 5.356. 3.728. Al. mg/L. 15.35. 0.49. 5.913. 5.562. 0.23. 0.02. 0.07. 0.08. 0.08. 0.01. 0.035. 0.031. 0.47. 0.07. 0.31. 0.212. Fe. mg/L. 89.49. 0.01. 16.66. 25.57. 1.19. 0.01. 0.233. 0.47. 0.39. 0. 0.108. 0.189. 0.02. 0.01. 0.013. 0.006. Mn. mg/L. 6.35. 0.87. 2.7223. 1.623. 0.73. 0.01. 0.288. 0.337. 0.58. 0.58. 0.58. 0. 0.18. 0.15. 0.165. 0.021. Cl. mg/L. 21.299. 1.111. 11.105. 3.695. 12.204. 11.23. 11.74. 0.385. 11.603. 11.199. 11.489. 0.195. 12.657. 11.755. 12.08. 0.429. NO3. mg/L. 5.138. 3.831. 4.402. 0.368. 6.708. 3.723. 4.578. 1.001. 8.003. 3.786. 5.162. 1.978. 4.595. 3.822. 4.232. 0.389. SO4. mg/L. 451.57. 214.57. 290.70. 73.469. 1044.7. 100.07. 309.56. 347.24. 216.19. 11.245. 66.815. 99.889. 30.263. 10.703. 21.959. 10.109. HCO3. mg/L. 24.39. 0. 10.74. 6.967. 48.77. 5.738. 20.65. 19.65. 46.52. 16.26. 24.18. 14.90. 24.30. 5.719. 12.51. 10.25. *max.: maximum, min.: minimum, std.: standard deviation.

(51) . pH. min..

(52) . Continued JC area Units C. pH. max.. min.. mean. std.. max.. min.. DB area. mean. std.. 11.7. 8.9. 10.5. 1.14. 10.6. 7.5. 8.83. 1.57. max.. min.. mean. std.. 18.0. 11.5. 14.3. 2.07. 6.26. 2.85. 5.35. 1.31. 6.32. 5.98. 6.15. 0.15. 7.2. 3.36. 4.56. 1.45. Eh. mV. 215. 47. 93. 64. 63. 46. 54. 7.6. 198. 2. 134. 73. EC. ms/m. 146. 9.36. 36.79. 53.68. 66.2. 18.6. 34.92. 22.36. 81. 7.37. 38.89. 35.47. ER. Ωm. 106.8. 6.83. 62.57. 36.74. 114. 15.12. 52.68. 43.94. 135.5. 12.33. 55.703. 52.001. DO. mg/L. 10.83. 9.08. 10.04. 0.70. 11.21. 6.66. 8.51. 1.924. 9.93. 3.35. 8.493. 2.001. TDS. mg/L. 774. 43. 188.33. 287.83. 295. 94. 168.75. 95.674. 448. 39. 231.22. 177.48. NaCl. %. 0.1. 0. 0.061. 0.0491. 0.3. 0.02. 0.13. 0.119. 0.3. 0. 0.066. 0.0998. Na. mg/L. 15.428. 10.748. 13.002. 2.061. 10.938. 6.058. 8.202. 2.290. 12.97. 5.758. 8.037. 2.745. K. mg/L. 0.81. 0.234. 0.473. 0.192. 0.901. 0.379. 0.606. 0.238. 0.787. 0.308. 0.578. 0.152. Mg. mg/L. 11.24. 2.107. 4.613. 3.394. 44.784. 16.458. 30.741. 15.864. 109.54. 2.598. 35.095. 32.778. Ca. mg/L. 78.587. 4.526. 24.189. 27.419. 20.45. 14.166. 16.786. 3.099. 44.562. 2.599. 24.347. 17.778. Al. mg/L. 38.71. 0.02. 7.502. 15.32. 0.05. 0.01. 0.028. 0.017. 44.72. 0.05. 15.56. 15.04. Fe. mg/L. 25.7. 0.01. 4.323. 10.47. 0.23. 0.01. 0.118. 0.104. 3.17. 0.08. 0.872. 1.007. Mn. mg/L. 16.74. 0.13. 4.118. 7.074. 0.38. 0.01. 0.12. 0.175. 2.57. 0.04. 1.209. 1.063. Cl. mg/L. 12.025. 11.366. 11.757. 0.215. 11.152. 10.476. 10.91. 0.317. 11.288. 10.823. 11.02. 0.169. NO3. mg/L. 4.506. 4.188. 4.368. 0.123. 5.152. 3.785. 4.469. 0.967. 5.029. 3.815. 4.480. 0.596. SO4. mg/L. 524.78. 10.702. 115.56. 201.26. 219.10. 32.316. 92.711. 87.469. 367.23. 10.043. 159.54. 134.82. HCO3. mg/L. 109.7. 0. 70.75. 39.37. 82.90. 28.04. 55.94. 27.44. 11.37. 0. 5.457. 4.396. !" #$%&'! (. Temp.. o. MB area. .

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(81) . . Plots of correlation between contents of ions versus pH for stream water in the abandoned Honam coal mine area (unit of Y axes is mg/L and symbols are same as Fig. 2).. *

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(111) . . pH and heavy metals (include Fe) contents of stream sediments in the abandoned Honam coal mine area.. Sample No.. pH. A-1 A-2 A-2-2 A-3 A-5 A-5-2 A-6 A-6-2 A-7 A-8 A-9 A-10 A-11 A-12 A-13 A-14-1 A-14-2 A-16 A-17 B-1 DB-1 DB-5 DB-6 DB-6-6 DB-7 JC-5 JC-10 MB-3 Max Min Mean. Fe(ppm). Zn(ppm). Cd(ppm). Cu(ppm). Pb(ppm). 26939 29333 26573 24650 26095 26145 27594 22575 27632 31311 29370 27103 28249 28312 30076 33793 26977 34713 29635 31349 30479 33680 32521 32773 29207 31903 32558 28426 34713 22575 29284. 413.2 582.8 520.9 210.5 57.49 50.69 48.86 61.26 56.24 51.82 50.53 41.66 47.71 49.01 61.10 183.20 106.80 190.30 105.20 77.61 89.78 76.58 74.20 76.66 69.70 66.89 73.76 970.30 970.30 41.66 159.45. 3.88 8.18 2.64 1.55 5.00 3.79 4.79 1.89 5.22 21.94 31.12 9.20 10.66 8.79 17.06 44.96 1.03 43.44 21.03 38.35 18.83 49.85 49.74 52.07 10.78 42.08 43.54 0.52 52.07 0.52 19.71. 41.52 11.59 41.83 65.26 51.91 53.68 37.71 101.70 56.22 9.46 1.59 12.79 12.15 13.20 10.43 1.52 46.38 1.39 10.10 1.25 30.77 41.56 52.09 46.86 198.50 29.36 21.34 9.53 198.50 1.25 36.13. 12.63 25.13 6.49 0.43 N.D. N.D. N.D. N.D. N.D. 39.20 48.85 11.20 3.04 1.85 29.15 66.99 16.56 66.82 60.10 63.39 40.84 69.18 70.32 71.94 41.94 77.35 74.69 3.34 77.35 0.43 39.20. 6.15 6.75 6.12 5.82 4.84 4.63 4.75 2.27 6.19 3.38 7.27 3.79 3.86 3.8 3.47 5.58 5.26 5.25 5.37 6.41 3.06 2.96 2.01 2.41 5.03 2.39 2.27 6.07 7.27 2.01 4.54. *N.D. : not detected. b- 3 %6

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