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<title>UTas ePrints - Mechanisms of arsenic attenuation in acid mine drainage from Mount Bischoff, western Tasmania</title>
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<meta content="Gault, A.G." name="eprints.creators_name" />
<meta content="Cooke, D.R." name="eprints.creators_name" />
<meta content="Townsend, Ashley T." name="eprints.creators_name" />
<meta content="Charnock, J.M." name="eprints.creators_name" />
<meta content="Polya, D.A." name="eprints.creators_name" />
<meta content="andrew.gault@manchester.ac.uk" name="eprints.creators_id" />
<meta content="David.Cooke@utas.edu.au" name="eprints.creators_id" />
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<meta content="2007-10-13 03:01:52" name="eprints.datestamp" />
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<meta content="Mechanisms of arsenic attenuation in acid mine drainage from
Mount Bischoff, western Tasmania" name="eprints.title" />
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<meta content="260100" name="eprints.subjects" />
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<meta content="Arsenic; Speciation; Acid mine drainage; EXAFS; Mount Bischoff; Tasmania" name="eprints.keywords" />
<meta content="There is a dearth of research concerning the geochemistry of arsenic in acid mine drainage (AMD) in western Tasmania. To help address this, the controls on the mobility and fate of arsenic in AMD and its associated sediment at the Mount Bischoff mine site in western Tasmania were investigated. AMD issuing from the adit mouth contained dissolved arsenic and iron concentrations of 2.5 and 800 mg L-1, respectively. The aqueous concentration of both arsenic and iron decreased markedly over a 150-m stretch from the adit mouth due to precipitation of hydrous ferric oxides (HFO) and jarosite, both of which are effective scavengers of arsenic. Microwave-assisted digestion of the sediment collected at the adit mouth revealed that the
arsenic concentration exceeded 1%. Sequential extraction of this sediment showed that the bulk of arsenic was associated with amorphous and crystalline hydrous oxides of Al and/or Fe. Extended X-ray absorption fine structure (EXAFS) analysis indicated that the solid phase arsenic exists as As(V). EXAFS data were consistent with arsenate tetrahedra substituting for sulphate in jarosite and with corner-sharing complexes adsorbed on ferric oxyhydroxide octahedra. Erosional transport of AMD sediment downstream to higher pH waters may increase the mobility (and hence bioavailablity) of arsenic through dissolution
of As-rich jarosite." name="eprints.abstract" />
<meta content="2005-08" name="eprints.date" />
<meta content="published" name="eprints.date_type" />
<meta content="Science of the Total Environment" name="eprints.publication" />
<meta content="345" name="eprints.volume" />
<meta content="2-3" name="eprints.number" />
<meta content="219-228" name="eprints.pagerange" />
<meta content="10.1016/j.scitotenv.2004.10.030" name="eprints.id_number" />
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<meta content="0048-9697" name="eprints.issn" />
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<meta content="Azcue JM, Mudroch A, Rosa F, Hall GEM. Effects of abandoned
gold mine tailings on the arsenic concentrations in water and
sediments of Jack of Clubs Lake, BC. Environ Technol 1994;15;
669–78.
Binsted N. CLRC Daresbury Laboratory EXCURV98 program.
Warrington, UK7 CLRC Daresbury Laboratory; 1998.
Binsted N, Strange RW, Hasnain SS. Constrained and restrained
refinement in EXAFS data analysis with curved wave theory.
Biochemistry 1992;31;12117– 25.
Boult S, Johnson N, Curtis C. Recognition of a biofilm at the
sediment–water interface of an acid mine drainage-contaminated
stream, and its role in controlling iron flux. Hydrol Process
1997;11;391–9.
Brake SS, Dannelly HK, Connors KA, Hasiotis ST. Influence of
water chemistry on the distribution of an acidophilic protozoan
in an acid mine drainage system at the abandoned Green Valley
coal mine, Indiana, USA. Appl Geochem 2001;16;1641–52.
Carpenter PD, Butler ECV, Higgins HW, Mackey DJ, Nichols PD.
Chemistry of trace-elements, humic substances and sedimentary
organic-matter in Macquarie Harbor, Tasmania. Aust J Mar
Freshw Res 1991;42;625–54.
Chao TT, Zhou L. Extraction techniques for selective dissolution of
amorphous iron-oxides from soils and sediments. Soil Sci Soc
Am J 1983;47;225–32.
Dold B. Dissolution kinetics of schwertmannite and ferrihydrite in
oxidized mine samples and their detection by differential X-ray
diffraction (DXRD). Appl Geochem 2003a;18;1531– 40.
Dold B. Speciation of the most soluble phases in a sequential
extraction procedure adapted for geochemical studies of copper
sulfide mine waste. J Geochem Explor 2003b;80;55– 68.
Dutrizac JE, Dinardo O. The co-precipitation of copper and zinc
with lead jarosite. Hydrometallurgy 1983;11;61–78.
Eriksen RS, Mackey DJ, van Dam R, Nowak B. Copper speciation
and toxicity in Macquarie Harbour, Tasmania: an investigation
using a copper ion selective electrode. Mar Chem 2001;74;
99–113.
Farag AM, Woodward DF, Goldstein JN, Brumbaugh W, Meyer JS.
Concentrations of metals associated with mining waste in
sediments, biofilm, benthic macroinvertebrates, and fish from
the Coeur d’Alene River Basin, Idaho. Arch Environ Contam
Toxicol 1998;34;119–27.
Farquhar ML, Charnock JM, Livens FR, Vaughan DJ. Mechanisms
of arsenic uptake from aqueous solution by interaction with
goethite, lepidocrocite, mackinawite, and pyrite: an X-ray
absorption spectroscopy study. Environ Sci Technol 2002;36;
1757– 62.
Featherstone AM, O’Grady BV. Removal of dissolved copper and
iron at the freshwater–saltwater interface of an acid mine stream.
Mar Pollut Bull 1997;34;332– 7.
Foster AL, Brown GE, Tingle TN, Parks GA. Quantitative arsenic
speciation in mine tailings using X-ray absorption spectroscopy.
Am Miner 1998;83;553– 68.
Gault AG, Polya DA, Lythgoe PR, Farquhar ML, Charnock JM,
Wogelius RA. Arsenic speciation in surface waters and sediments
in a contaminated waterway: an IC-ICP-MS and XAS
based study. Appl Geochem 2003a;18;1387 – 97.
Gault AG, Polya DA, Charnock JM, Islam FS, Lloyd JR, Chatterjee
D. Preliminary EXAFS studies of solid phase speciation of As
in a West Bengali sediment. Min Mag 2003b;67;1183– 91.
Groves DI, Solomon M. The geology of the Mt Bischoff district.
Pap Proc R Soc Tasman 1964;98;1–22.
Groves DI, Martin EL, Murchie H, Wellington HK. A century of tin
mining at Mt Bischoff 1871–1971. Bull-Tasman Geol Surv
1972;54 [310 pp.].
Gurman SJ, Binsted N, Ross I. A rapid, exact curved-wave theory
for EXAFS calculations. J Phys C Solid State Phys 1984;17;
143– 51.
Hall GEM, Vaive JE, Beer R, Hoashi M. Selective leaches revisited,
with emphasis on the amorphous Fe oxyhydroxide phase
extraction. J Geochem Explor 1996;56;59–78.
Halley SW, Walshe JL. A reexamination of the Mount Bischoff
cassiterite sulfide skarn, western Tasmania. Econ Geol 1995;90;
1676– 93.
Harle KJ, Britton K, Heijnis H, Zawadzki A, Jenkinson AV. Mud,
mines and rainforest: a short history of human impact in western
Tasmania, using pollen, trace metals and lead-210. Aust J Bot
2002;50;481–97.
Hedin L, Lundqvist S. Effects of electron–electron and electron–
phonon interactions on the one-electron states of solids. Solid
State Phys 1969;23;1–181.
Hodgson DA, Vyverman W, Chepstow-Lusty A, Tyler PA. From
rainforest to wasteland in 100 years: the limnological legacy of
the Queenstown mines, western Tasmania. Arch Hydrobiol
2000;149;153–76.
Keon NE, Swartz CH, Brabander DJ, Harvey C, Hemond HF. Validation
of an arsenic sequential extraction method for evaluating
mobility in sediments. Environ Sci Technol 2001;35;2778– 84.
Kim J, Davis AP, Kim K. Stablization of available arsenic in highly
contaminated mine tailings using iron. Environ Sci Technol
2003;37;189–95.
Kostka JE, Luther GW. Partitioning and speciation of solid-phase
iron in salt-marsh sediments. Geochim Cosmochim Acta
1994;58;1701–10.
Krachler M, Shotyk W, Emons H. Digestion procedures for the
determination of antimony and arsenic in small amounts of peat
samples by hydride generation–atomic absorption spectrometry.
Anal Chim Acta 2001;432;303–10.
Krachler M, Emons H, Barbante C, Cozzi G, Cescon P, Shotyk W.
Inter-method comparison for the determination of antimony and
arsenic in peat samples. Anal Chim Acta 2002;458;387– 96.
Levy DB, Custis KH, Casey WH, Rock PA. A comparison of metal
attenuation in mine residue and overburden material from an
abandoned copper mine. Appl Geochem 1997;12;203– 11.
McGregor RG, Blowes DW, Jambor JL, Robertson WD. Mobilization
and attenuation of heavy metals within a nickel mine
tailings impoundment near Sudbury, Ontario, Canada. Environ
Geol 1998;36;305– 19.
Mineral Resources Tasmania. Mount Bischoff acid mine drainage
investigations. Final report 2003, available at http://www.mrt.tas.
gov.au (accessed October 2004).
Paktunc AD, Dutrizac JE. Characterization of arsenic substitution in
synthetic potassium jarosite using X-ray diffraction and X-ray
absorption spectroscopy. Can Mineral 2003;41;905– 19.
Paktunc AD, Foster AL, Laflamme JHG. Speciation and characterization
of arsenic in Ketza River mine tailings using X-ray absorption
spectroscopy. Environ Sci Technol 2003;37;2067– 74.
Randall SR, Sherman DM, Ragnarsdottir KV. Sorption of As(V) on
green rust (Fe4(II)Fe2(III)(OH)12SO43H2O) and lepidocrocite
(g-FeOOH): surface complexes from EXAFS spectroscopy.
Geochim Cosmochim Acta 2001;65;1015–23.
Savage KS, Tingle TN, O’Day PA, Waychunas GA, Bird DK.
Arsenic speciation in pyrite and secondary weathering phases,
Mother Lode Gold District, Tuolumne County, California. Appl
Geochem 2000;15;1219–44.
Savage KS, Bird DK, O’Day PA. Arsenic speciation in synthetic
jarosite. Chem Geol [in press].
Scott KM. Solid-solution in, and classification of, gossan-derived
members of the alunite–jarosite family, Northwest Queensland,
Australia. Am Miner 1987;72;178– 87.
Sherman DM, Randall SR. Surface complexation of arsenic(V) to
iron(III) (hydr)oxides: structural mechanism from ab initio
molecular geometries and EXAFS spectroscopy. Geochim
Cosmochim Acta 2003;67;4223–30.
Smedley PL, Kinniburgh DG. A review of the source, behaviour and
distribution of arsenic in natural waters. Appl Geochem 2002;
17;517– 68.
Solomon M. An introduction to the geology and metallic ore deposits
of Tasmania. Econ Geol 1981;76;194–208.
Stauber JL, Benning RJ, Hales LT, Eriksen R, Nowak B. Copper
bioavailability and amelioration of toxicity in Macquarie
Harbour, Tasmania, Australia. Mar Freshw Res 2000;51;1– 10.
Townsend AT. The determination of arsenic and selenium in
standard reference materials using sector field ICP-MS in high
resolution mode. Fresenius J Anal Chem 1999;364;521–6.
Wang JW, Bejan D, Bunce NJ. Removal of arsenic from synthetic
acid mine drainage by electrochemical pH adjustment and
coprecipitation with iron hydroxide. Environ Sci Technol 2003;
37;4500– 6.
Waychunas GA, Rea BA, Fuller CC, Davis JA. Surface-chemistry
of ferrihydrite 1 EXAFS studies of the geometry of coprecipitated
and adsorbed arsenate. Geochim Cosmochim Acta 1993;
57;2251– 69.
Wright JH, Kwak TAP. Tin-bearing greisens of Mount Bischoff,
northwestern Tasmania, Australia. Econ Geol 1989;84;551– 74.
Wenzel WW, Kirchbaumer N, Prohaska T, Stingeder G, Lombi E,
Adriano DC. Arsenic fractionation in soils using an improved
sequential extraction procedure. Anal Chim Acta 2001;436;
309– 23." name="eprints.referencetext" />
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<meta content="There is a dearth of research concerning the geochemistry of arsenic in acid mine drainage (AMD) in western Tasmania. To help address this, the controls on the mobility and fate of arsenic in AMD and its associated sediment at the Mount Bischoff mine site in western Tasmania were investigated. AMD issuing from the adit mouth contained dissolved arsenic and iron concentrations of 2.5 and 800 mg L-1, respectively. The aqueous concentration of both arsenic and iron decreased markedly over a 150-m stretch from the adit mouth due to precipitation of hydrous ferric oxides (HFO) and jarosite, both of which are effective scavengers of arsenic. Microwave-assisted digestion of the sediment collected at the adit mouth revealed that the
arsenic concentration exceeded 1%. Sequential extraction of this sediment showed that the bulk of arsenic was associated with amorphous and crystalline hydrous oxides of Al and/or Fe. Extended X-ray absorption fine structure (EXAFS) analysis indicated that the solid phase arsenic exists as As(V). EXAFS data were consistent with arsenate tetrahedra substituting for sulphate in jarosite and with corner-sharing complexes adsorbed on ferric oxyhydroxide octahedra. Erosional transport of AMD sediment downstream to higher pH waters may increase the mobility (and hence bioavailablity) of arsenic through dissolution
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<h1 class="ep_tm_pagetitle">Mechanisms of arsenic attenuation in acid mine drainage from Mount Bischoff, western Tasmania</h1>
<p style="margin-bottom: 1em" class="not_ep_block"><span class="person_name">Gault, A.G.</span> and <span class="person_name">Cooke, D.R.</span> and <span class="person_name">Townsend, Ashley T.</span> and <span class="person_name">Charnock, J.M.</span> and <span class="person_name">Polya, D.A.</span> (2005) <xhtml:em>Mechanisms of arsenic attenuation in acid mine drainage from Mount Bischoff, western Tasmania.</xhtml:em> Science of the Total Environment, 345 (2-3). pp. 219-228. ISSN 0048-9697</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/2157/1/Gault.Cooke.Townsend.etal.STE.2005.pdf"><img alt="[img]" src="http://eprints.utas.edu.au/style/images/fileicons/application_pdf.png" border="0" class="ep_doc_icon" /></a></td><td valign="top"><a href="http://eprints.utas.edu.au/2157/1/Gault.Cooke.Townsend.etal.STE.2005.pdf"><span class="ep_document_citation">PDF</span></a> - Full text restricted - Requires a PDF viewer<br />375Kb</td><td><form method="get" accept-charset="utf-8" action="http://eprints.utas.edu.au/cgi/request_doc"><input value="2698" name="docid" accept-charset="utf-8" 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/10.1016/j.scitotenv.2004.10.030">http://dx.doi.org/10.1016/j.scitotenv.2004.10.030</a></p><div class="not_ep_block"><h2>Abstract</h2><p style="padding-bottom: 16px; text-align: left; margin: 1em auto 0em auto">There is a dearth of research concerning the geochemistry of arsenic in acid mine drainage (AMD) in western Tasmania. To help address this, the controls on the mobility and fate of arsenic in AMD and its associated sediment at the Mount Bischoff mine site in western Tasmania were investigated. AMD issuing from the adit mouth contained dissolved arsenic and iron concentrations of 2.5 and 800 mg L-1, respectively. The aqueous concentration of both arsenic and iron decreased markedly over a 150-m stretch from the adit mouth due to precipitation of hydrous ferric oxides (HFO) and jarosite, both of which are effective scavengers of arsenic. Microwave-assisted digestion of the sediment collected at the adit mouth revealed that the
arsenic concentration exceeded 1%. Sequential extraction of this sediment showed that the bulk of arsenic was associated with amorphous and crystalline hydrous oxides of Al and/or Fe. Extended X-ray absorption fine structure (EXAFS) analysis indicated that the solid phase arsenic exists as As(V). EXAFS data were consistent with arsenate tetrahedra substituting for sulphate in jarosite and with corner-sharing complexes adsorbed on ferric oxyhydroxide octahedra. Erosional transport of AMD sediment downstream to higher pH waters may increase the mobility (and hence bioavailablity) of arsenic through dissolution
of As-rich jarosite.</p></div><table style="margin-bottom: 1em" border="0" cellpadding="3" class="not_ep_block"><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">Keywords:</th><td valign="top" class="ep_row">Arsenic; Speciation; Acid mine drainage; EXAFS; Mount Bischoff; Tasmania</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 > 260100 Geology</a></td></tr><tr><th valign="top" class="ep_row">Collections:</th><td valign="top" class="ep_row">UNSPECIFIED</td></tr><tr><th valign="top" class="ep_row">ID Code:</th><td valign="top" class="ep_row">2157</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">13 Oct 2007 14:01</td></tr><tr><th valign="top" class="ep_row">Last Modified:</th><td valign="top" class="ep_row">23 Jan 2008 14:56</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=2157;">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&eprintid=2157">item control page</a></p>
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