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  5.     <title>UTas ePrints - The effects of hardpan layers on the water chemistry from the leaching of pyrrhotite-rich tailings material</title>
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  13.     <meta content="Gilbert, S.E." name="eprints.creators_name" />
  14. <meta content="Cooke, D.R." name="eprints.creators_name" />
  15. <meta content="Hollings, P." name="eprints.creators_name" />
  16. <meta content="sgilbert@utas.edu.au" name="eprints.creators_id" />
  17. <meta content="D.Cooke@utas.edu.au" name="eprints.creators_id" />
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  23. <meta content="The effects of hardpan layers on the water chemistry from the leaching of pyrrhotite-rich tailings material" name="eprints.title" />
  24. <meta content="pub" name="eprints.ispublished" />
  25. <meta content="260100" name="eprints.subjects" />
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  27. <meta content="Hardpan, Mine tailings,Column
  28. leaching, Pyrrhotite oxidation, Tasmania,
  29. Australia" name="eprints.keywords" />
  30. <meta content="The original publication is available at www.springerlink.com
  31. " name="eprints.note" />
  32. <meta content="Column leaching experiments were used to determine the effects of an iron-rich hardpan layer, on the rate of tailings oxidation and the composition of leachate waters, from the Renison Bell tailings dams in western Tasmania, Australia. One-meter-long PVC columns, filled with tailings,
  33. cover material (Cassiterite Flotation Tailings) and hardpan samples from the tailings dams, were leached over a period of 14 weeks. Under dry cover conditions, when hardpan was present, the solute loads peaked at 21–49 days (Fe at 2,294 ppm and SO4 2- at 4,700 ppm), and stabilised at much lower
  34. concentrations after 9 weeks. In contrast, the solute
  35. loads steadily increased over time in the column where hardpan was absent (SO4 -2 from 1,800 to 3,100 ppm, and Fe from 407 to 1,692 ppm). Under saturated cover conditions, the solute concentrations in the leachate also increased with time (SO4 2- from 1,900 to 17,000 ppm, and Fe from
  36. 480 to 8,500 ppm). The presence of a hardpan layer
  37. between the reactive tailings and cover material has
  38. been found to improve leachate water chemistry and
  39. lessen the rate of sulphide oxidation." name="eprints.abstract" />
  40. <meta content="2003-09" name="eprints.date" />
  41. <meta content="published" name="eprints.date_type" />
  42. <meta content="Environmental Geology" name="eprints.publication" />
  43. <meta content="44" name="eprints.volume" />
  44. <meta content="6" name="eprints.number" />
  45. <meta content="687-697" name="eprints.pagerange" />
  46. <meta content="10.1007/s00254-003-0810-5" name="eprints.id_number" />
  47. <meta content="TRUE" name="eprints.refereed" />
  48. <meta content="0943-0105" name="eprints.issn" />
  49. <meta content="http://dx.doi.org/10.1007/s00254-003-0810-5" name="eprints.official_url" />
  50. <meta content="Ahonen L, Tuovinen OH (1994) Solid-phase alteration and iron
  51. transformation in column bioleaching of a complex sulphide
  52. ore. In: Alpers CN, Blowes DW (eds) The environmental geochemistry
  53. of sulphide oxidation. American Chemical Society,
  54. ACS Symposium Series 550, Ontario, pp 79–89
  55. Bain JG, Blowes DW, Robertson WD, Frind EO (2000) Modelling
  56. of sulphide oxidation with reactive transport at a mine drainage
  57. site. J Contam Hydrol 41:23–47
  58. Bahatti TM, Bigham JM, Carlson L, Tuovinen OH (1993) Mineral
  59. products of pyrrhotite oxidation by Thiobacillus ferrooxidans.
  60. Appl Environ Microbiol 59:1984–1990
  61. Barham RJ (1997) Schwertmannite: a unique mineral, contains a
  62. replaceable ligand, transforms to jarosites, hematites and/or
  63. basic iron sulphate. J Mater Res 12:2751–2758
  64. Bigham JM (1994) Mineralogy of ochre deposits formed by sulphide
  65. oxidation. In: Blowes DW, Jambor JL (eds) The environmental
  66. geochemistry of sulphide mine-wastes: short course handbook.
  67. Mineralogical Association of Canada, Ontario, pp 103–132
  68. Bigham JM, Schwertmann U, Traina SJ, Winland RL, Wolf M
  69. (1996) Schwertmannite and the chemical modelling of iron in
  70. acid sulphate waters. Geochim Cosmochim Acta 60:2111–2121
  71. Blowes DW, Reardon EJ, Jambor JL, Cherry JA (1991) The formation
  72. and potential importance of cemented layers in inactive
  73. sulphide mine tailings. Geochim Cosmochim Acta 55:965–978
  74. Bureau of Meteorology, www.bom.gov.au
  75. Chermak JA, Runnells DD (1995) Self-sealing hardpan barriers to
  76. minimise infiltration of water into sulphide-bearing overburden,
  77. ore and tailings piles. Tailings and Mine Waste ’96, pp 265–273
  78. Cravotta CA (1994) Secondary iron-sulphate minerals as sources
  79. of sulphate and acidity. In: Alpers CN, Blowes DW (eds) The
  80. environmental geochemistry of sulphide oxidation. American
  81. Chemical Society, ACS Symposium Series 550, Ontario, pp 345–
  82. 364
  83. Elberling B, Nicholson RV, Scharer JM (1994) A combined kinetic
  84. and diffusion model for pyrite oxidation in tailings: a change in
  85. controls with time. J Hydrol 157:47–60
  86. Elberling B, Nicholson RV (1996) Field determination of sulphide
  87. oxidation rates in mine tailings. Water Resour Res 32:1773–1784
  88. Frau F (2000) The formation-dissolution-precipitation cycle of
  89. melanterite at the abandoned pyrite mine of Genna Luas in
  90. Sardinia, Italy: environmental implications. Mineral Mag
  91. 64:995–1006
  92. Janzen MP, Nicholson RV, Scharer JM (2000) Pyrrhotite reaction
  93. kinetics: reaction rates for oxidation by oxygen, ferric iron, and
  94. for nonoxidative dissolution. Geochim Cosmochim Acta
  95. 64:1511–1522
  96. Johnson RH, Blowes DW, Robertson WD, Jambor JL (2000) The
  97. hydrogeochemistry of the Nickel Rim Mine tailings impoundment.
  98. J Contam Hydrol 41:49–80
  99. Kalinkin AM, Forsling W, Makarov DV, Makarov VN (2000)
  100. Surface oxidation of synthetic pyrrhotite during wetting-drying
  101. treatment. J Environ Eng Sci 17:329–335
  102. Keith DC, Runnells DD (1995) Experimental simulation of waste
  103. rock weathering under unsaturated and saturated conditions at
  104. Iron Mountain, California. Tailings and Mine Waste ‘96, pp
  105. 351–360
  106. Light TS (1972) Standard solution for redox potential measurements.
  107. Anal Chem 44:1038–1039
  108. Lin Z, Herbert RB (1997) Heavy metal retention in secondary
  109. precipitates from a mine rock dump and underlying soil,
  110. Dalarna, Sweden. Environ Geol 33:1–12
  111. McGregor RG, Blowes DW, Jambor JL, Robertson WD (1998) The
  112. solid-phase controls on the mobility of heavy metals at the
  113. Copper Cliff tailings area, Sudbury, Ontario, Canada. J Contam
  114. Hydrol 33:247–271
  115. McSweeney K, Madison FW (1988) Formation of a cemented
  116. subsurface horizon in sulphidic minewaste. J Environ Qual
  117. 17:256–262
  118. Nicholson RV, Gillham RW, Cherry JA, Reardon EJ (1989)
  119. Reduction of acid generation in mine tailings through the use of moisture-retaining cover layers as oxygen barriers. Can Geotech
  120. J 28:1-8
  121. Nicholson RV, Scharer JM (1994) Laboratory studies of pyrrhotite
  122. oxidation kinetics. In: Alpers CN, Blowes DW (eds) The environmental
  123. geochemistry of sulphide oxidation. American
  124. Chemical Society, ACS Symposium Series 550, Ontario, pp 15–30
  125. Rose S, Elliott WC (2000) The effects of pH regulation upon the
  126. release of sulphate from ferric precipitates formed in acid mine
  127. drainage. Appl Geochem 15:27–34
  128. Shum M, Lavkulich LM (1999) Use of colour to estimate oxidised
  129. Fe content in mine waste rock. Environ Geol 37:281–289
  130. Stromberg B, Banwart S (1999) Weathering kinetics of waste rock
  131. from the Aitik copper mine, Sweden: scale dependent rate factors
  132. and pH controls in large column experiments. J Contam
  133. Hydrol 39:59–89
  134. Wang Y, Reardon EJ (2001) A siderite/limestone reactor to remove
  135. arsenic and cadmium from waste-waters. Appl Geochem
  136. 16:1241–1249
  137. Villalobos M, Trotz MA, Leckie JO (2001) Surface complexation
  138. modelling of carbonate effects on the adsorption of Cr(VI),
  139. Pb(II), and U(VI) on goethite. Environ Sci Technol 35:3849–
  140. 3856" name="eprints.referencetext" />
  141. <meta content="Gilbert, S.E. and Cooke, D.R. and Hollings, P. (2003) The effects of hardpan layers on the water chemistry from the leaching of pyrrhotite-rich tailings material. Environmental Geology, 44 (6). pp. 687-697. ISSN 0943-0105" name="eprints.citation" />
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  146. <meta content="Cooke, D.R." name="DC.creator" />
  147. <meta content="Hollings, P." name="DC.creator" />
  148. <meta content="260100 Geology" name="DC.subject" />
  149. <meta content="Column leaching experiments were used to determine the effects of an iron-rich hardpan layer, on the rate of tailings oxidation and the composition of leachate waters, from the Renison Bell tailings dams in western Tasmania, Australia. One-meter-long PVC columns, filled with tailings,
  150. cover material (Cassiterite Flotation Tailings) and hardpan samples from the tailings dams, were leached over a period of 14 weeks. Under dry cover conditions, when hardpan was present, the solute loads peaked at 21–49 days (Fe at 2,294 ppm and SO4 2- at 4,700 ppm), and stabilised at much lower
  151. concentrations after 9 weeks. In contrast, the solute
  152. loads steadily increased over time in the column where hardpan was absent (SO4 -2 from 1,800 to 3,100 ppm, and Fe from 407 to 1,692 ppm). Under saturated cover conditions, the solute concentrations in the leachate also increased with time (SO4 2- from 1,900 to 17,000 ppm, and Fe from
  153. 480 to 8,500 ppm). The presence of a hardpan layer
  154. between the reactive tailings and cover material has
  155. been found to improve leachate water chemistry and
  156. lessen the rate of sulphide oxidation." name="DC.description" />
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  270.     <h1 class="ep_tm_pagetitle">The effects of hardpan layers on the water chemistry from the leaching of pyrrhotite-rich tailings material</h1>
  271.     <p style="margin-bottom: 1em" class="not_ep_block"><span class="person_name">Gilbert, S.E.</span> and <span class="person_name">Cooke, D.R.</span> and <span class="person_name">Hollings, P.</span> (2003) <xhtml:em>The effects of hardpan layers on the water chemistry from the leaching of pyrrhotite-rich tailings material.</xhtml:em> Environmental Geology, 44 (6). pp. 687-697. ISSN 0943-0105</p><p style="margin-bottom: 1em" class="not_ep_block"></p><table style="margin-bottom: 1em" class="not_ep_block"><tr><td valign="top" style="text-align:center"><a href="http://eprints.utas.edu.au/2057/1/Gilbert.Cooke.Hollings.ENVIROGEO.2003.pdf"><img alt="[img]" src="http://eprints.utas.edu.au/style/images/fileicons/application_pdf.png" class="ep_doc_icon" border="0" /></a></td><td valign="top"><a href="http://eprints.utas.edu.au/2057/1/Gilbert.Cooke.Hollings.ENVIROGEO.2003.pdf"><span class="ep_document_citation">PDF</span></a> - Full text restricted - Requires a PDF viewer<br />444Kb</td><td><form method="get" accept-charset="utf-8" action="http://eprints.utas.edu.au/cgi/request_doc"><input accept-charset="utf-8" value="2596" name="docid" type="hidden" /><div class=""><input value="Request a copy" name="_action_null" class="ep_form_action_button" onclick="return EPJS_button_pushed( '_action_null' )" type="submit" /> </div></form></td></tr></table><p style="margin-bottom: 1em" class="not_ep_block">Official URL: <a href="http://dx.doi.org/10.1007/s00254-003-0810-5">http://dx.doi.org/10.1007/s00254-003-0810-5</a></p><div class="not_ep_block"><h2>Abstract</h2><p style="padding-bottom: 16px; text-align: left; margin: 1em auto 0em auto">Column leaching experiments were used to determine the effects of an iron-rich hardpan layer, on the rate of tailings oxidation and the composition of leachate waters, from the Renison Bell tailings dams in western Tasmania, Australia. One-meter-long PVC columns, filled with tailings,&#13;
  272. cover material (Cassiterite Flotation Tailings) and hardpan samples from the tailings dams, were leached over a period of 14 weeks. Under dry cover conditions, when hardpan was present, the solute loads peaked at 21–49 days (Fe at 2,294 ppm and SO4 2- at 4,700 ppm), and stabilised at much lower&#13;
  273. concentrations after 9 weeks. In contrast, the solute&#13;
  274. loads steadily increased over time in the column where hardpan was absent (SO4 -2 from 1,800 to 3,100 ppm, and Fe from 407 to 1,692 ppm). Under saturated cover conditions, the solute concentrations in the leachate also increased with time (SO4 2- from 1,900 to 17,000 ppm, and Fe from&#13;
  275. 480 to 8,500 ppm). The presence of a hardpan layer&#13;
  276. between the reactive tailings and cover material has&#13;
  277. been found to improve leachate water chemistry and&#13;
  278. lessen the rate of sulphide oxidation.</p></div><table style="margin-bottom: 1em" cellpadding="3" class="not_ep_block" border="0"><tr><th valign="top" class="ep_row">Item Type:</th><td valign="top" class="ep_row">Article</td></tr><tr><th valign="top" class="ep_row">Additional Information:</th><td valign="top" class="ep_row">The original publication is available at www.springerlink.com&#13;
  279. </td></tr><tr><th valign="top" class="ep_row">Keywords:</th><td valign="top" class="ep_row">Hardpan, Mine tailings,Column&#13;
  280. leaching, Pyrrhotite oxidation, Tasmania,&#13;
  281. Australia</td></tr><tr><th valign="top" class="ep_row">Subjects:</th><td valign="top" class="ep_row"><a href="http://eprints.utas.edu.au/view/subjects/260100.html">260000 Earth Sciences &gt; 260100 Geology</a></td></tr><tr><th valign="top" class="ep_row">ID Code:</th><td valign="top" class="ep_row">2057</td></tr><tr><th valign="top" class="ep_row">Deposited By:</th><td valign="top" class="ep_row"><span class="ep_name_citation"><span class="person_name">Mrs Katrina Keep</span></span></td></tr><tr><th valign="top" class="ep_row">Deposited On:</th><td valign="top" class="ep_row">08 Oct 2007 08:58</td></tr><tr><th valign="top" class="ep_row">Last Modified:</th><td valign="top" class="ep_row">09 Jan 2008 02:30</td></tr><tr><th valign="top" class="ep_row">ePrint Statistics:</th><td valign="top" class="ep_row"><a target="ePrintStats" href="/es/index.php?action=show_detail_eprint;id=2057;">View statistics for this ePrint</a></td></tr></table><p align="right">Repository Staff Only: <a href="http://eprints.utas.edu.au/cgi/users/home?screen=EPrint::View&amp;eprintid=2057">item control page</a></p>
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