Chemistry of Acidic and Neutralized Alum Shale Pit Lakes 50 Years After Mine Closure, Kvarntorp, Sweden
Tóm tắt
Several large pits were left after alum shale was mined from 1942 to 1966 in the Kvarntorp area of Sweden. Of these, the pit lakes Pölen and Norrtorpssjön are the focus of this study. They have elevated levels of Na, K, Mg, Ca, Al, Mn, Fe, and sulphate, as well as trace elements, from weathering of the exposed shale. Both lakes had a stable pH below 4 until 1996 when the pH in Norrtorpssjön started to increase, exceeding 8 in 2010, due to inflow of leachates from alkaline waste dumped in an adjacent waste deposit, similar to a large scale anoxic limestone drain (ALD). Iron and Al concentrations decreased as the pH increased, indicating formation of particulate species which accumulate as sediments. The Co, Ni, and Zn concentrations also decreased, probably due to association with the solid phases, while Cu was less affected by the increase in pH, possibly due to formation of complexes with dissolved organic matter. Vanadium concentrations show limited solubility, while Mo concentrations increased at higher pH. Uranium concentrations decreased from above 80 μg/L to below 10 μg/L before rising to 30–35 μg/L due to the formation of soluble carbonate complexes at higher pH levels. The elevated levels of Li, Sr, and U indicate that weathering has continued despite the pH change. Both pit lakes are stratified, but no seasonal overturn has been observed. Long-term behaviour of this large-scale ALD and its implications are also discussed.
Tài liệu tham khảo
Åhlgren K, Sjöberg V, Bäckström M (2018) Leaching of U, V, Ni and Mo from alum shale waste as a function of redox and pH—suggestion for a leaching method. In: Wolkersdorfer Ch, Sartz L, Weber A, Burgess J, Tremblay G (eds) Mine water: risk to opportunity, Proc, 11th ICARD/IMWA 10–14 September 2018, Tshwane University of Technology, Pretoria, South Africa, pp 782–787
Allard B, Arsenie I, Håkansson K, Karlsson S, Ahlberg A-C, Lundgren T, Collin M, Rasmuson A, Strandell E (1991) Effects of weathering on metal releases from an engineered deposit for alum shale leaching residues. Water Air Soil Pollut 57–58:431–440
Allard B, Bäckström M, Häller S, Karlsson S, Panova E, Grawunder A (2011) Water chemistry and trace metal concentrations in an acidic alum shale pit lake—effects of liming. In: Rüde TR, Freund A, Wolkersdorfer Ch (eds) Mine water: managing the challenges. Proc, 11th IMWA, Aachen Germany, pp 503–508
Allard B, Bäckström M, Karlsson S, Grawunder A (2014) Neutralisation of an acidic pit lake by alkaline waste products. Environ Sci Pollut Res 21:6930–6938
Andersson A, Dahlman B, Gee DG, Snäll S (1985) The Scandinavian Alum Shales. Swedish Geol Survey SER Ca Nr 56, Uppsala
Armands G (1972) Geochemical studies of uranium, molybdenum and vanadium in a Swedish alum shale. Stockh Contrib Geol 27:1–148
Bäckström M (2010) Environmental impact from an alum shale deposit, Kvarntorp, Sweden: present and future scenarios. In: Wolkersdorfer C, Freund A (eds) Mine water & innovative thinking. Proc, IMWA Symp. Cape Breton Univ Press, Sydney, pp 551–554
Bengtson P (1971) The Hydrogeology of the Kvarntorp Area. Swedish Geol Survey, SER C Nr 667, Uppsala [Kvarntorpsområdets hydrogeologi, in Swedish with English summary]
Chi Fru E, Hemmingsson C, Callac N, Perez N, Panova EG, Broman C, el Albani A (2016) Atmospheric weathering of Scandinavian alum shales and the fractionation of C, N and S isotopes. Appl Geochem 74:94–108
Fisher TSR, Lawrence GA (2006) Treatment of acid rock drainage in a meromictic mine pit lake. J Environ Eng ASCE 132:515–526
Garrels RM, Christ CL (1965) Solutions, minerals and equilibria. Freeman, Coper & Comp, San Francisco
Genty T, Bussière B, Potvin R, Benzaazoua M, Zagury GJ (2012) Dissolution of calcitic marble and dolomitic rock in high iron concentrated acid mine drainage: application to anoxic limestone drains. Environ Earth Sci 66:2387–2401
Grawunder A, Merten D, Büchel G (2014) Origin of middle rare earth element enrichment in acid mine drainage-impacted areas. Environ Sci Pollut Res 21:6812–6823
Hessland I, Armands G (1978) Alum shale—geology. Statens industriverk: SIND PM 1978:3, Stockholm [Alunskiffer: Underlagsmaterial geologi, in Swedish]
Jaynes DB, Rogowski AS, Pionke HB (1984) Acid mine drainage from reclaimed coal strip mines I. Model description. Water Resour Res 20:233–242
Jeng AS (1991) Weathering of some Norwegian alum shales. Acta Agr Scand 41:13–35
Karlsson L, Bäckström M, Allard B (2012a) Leaching of sulfidic alum shale waste at different temperatures. In: Price WA, Hogan C, Tremblay G (eds) Proc, 9th ICARD 2012, Curran Associates, Inc., Ottawa, Canada, Red Hook, NY, 20–26 May, pp 1015–1025
Karlsson S, Sjöberg V, Pourjabbar A, Grandin A, Allard B (2012b) Distribution of rare earth elements and other metals in a stratified acidic pit lake in black shales 45 years after mine closure. In: Price WA, Hogan C, Trembley G (eds) Proc, 9th ICARD 2012, Curran Associates, Inc., Ottawa, Canada, Red Hook, NY, 20–26 May, pp 812–821
Karlsson L, Karlsson S, Allard B, Sjöberg V, Bäckström M (2013) Release of metals from unprocessed and processed black shale due to natural weathering. In: Brown A, Figueroa L, Wolkersdorfer C (eds) Reliable mine water technology, vol I. Publication Printers, Denver, pp 391–397
Kumla kommun (1993–2017) Water monitoring program in Kvarntorp [one report every year, Kvarntorps vatten, in Swedish]
Lavergren U (2008) Metal dispersion from natural and processed black shale. Ph.D. Diss, Univ of Kalmar, Sweden
McCullough CD, Lund MA (2011) Bioremediation of acidic and metalliferous drainage (AMD) through organic carbon amendment by municipal sewage and green waste. J Environ Manag 92:2419–2426
Nicholson RV, Gillham RW, Reardon EJ (1988) Pyrite oxidation in carbonate buffered solution 1. Experimental kinetics. Geochim Cosmochim Acta 52:1077–1085
Nicholson RV, Gillham RW, Reardon EJ (1989) Pyrite oxidation in carbonate buffered solution 2. Rate control by oxide coatings. Geochim Cosmochim Acta 54:395–402
Nixdorf B, Uhlmann W, Lessmann D (2010) Potential for remediation of acidic mining lakes evaluated by hydrogeochemical modelling: case study Grünewalder Lauch (Plessa 117, Lusatia/Germany). Limnologica 40:167–174
Peng B, Song Z, Tu X, Xiao M, Wu F, Lu H (2004) Release of heavy metals during weathering of the Lower Cambrian black shales in western Hunan, China. Environ Geol 45:1137–1147
Pihlak AA, Maremäe EJ, Jalakas LE (1985) Leaching process of alum shale and limestone from Maardu and Toolse phosphorite quarries (Estonian SSR). Oil Shale 2:155–169
Pokrovsky OS, Shirokova LS (2013) Diurnal variations of dissolved and colloidal organic carbon and trace metals in a boreal lake during summer bloom. Water Res 47:922–932
Pourbaix M (1974) Atlas of electrochemical equilibria in aqueous solution. National Assoc of Corrosion Engineers, Houston
Puura E (1998) Weathering of mining waste rock containing alum shale and limestone: a case study of the Maardu dumps, Estonia. Ph.D. Diss, Royal Inst of Technology, Stockholm
Puura E, Neretnieks I, Kirsimäe K (1999) Atmospheric oxidation of the pyrite waste rock in Maardu, Estonia 1: field study and modelling. Environ Geol 39:1–19
Rai D, Serne RJ, Moore DA (1980) Solubility of plutonium compounds and their behavior in soils. Soil Sci Soc Am J 44:490–495
Ritsema CJ, Groenenburg JE (1993) Pyrite oxidation, carbonate weathering, and gypsum formation in a drained potential acid sulfate soil. Soil Sci Soc Am J 57:968–976
Saleh AS, Lee J-Y, Jo Y, Yun J-I (2018) Uranium(VI) sorption complexes on silica in the presence of calcium and carbonate. J Environ Radioact 182:63–69
Scherlock EJ, Lawrence RW, Poulin R (1995) On the neutralization of acid rock drainage by carbonate and silicate minerals. Environ Geol 25:43–54
Stenberg M-L, Ekholm D, Zinn E (2002) Plan for the deposit in the Östersätter alum shale quarry at Kvarntorp. SWECO, Göteborg [Anpassningsplan för deponi Östersättersbrottet i Kvarntorp, in Swedish]
Stewart BD, Mayes MA, Fendorf S (2010) Impact of uranyl–calcium–carbonato complexes on uranium(VI) adsorption to synthetic and natural sediments. Environ Sci Technol 44:928–934
Sundqvist S (1956) The Ljungström plant. Skifferskriften 2:8-10 [Ljungströmsanläggningen, in Swedish]
Svensson H, Sundqvist U, Graffner O, Gustavsson S (2005) Kvarntorp. The Kvarntorp area, studies of the groundwater system. SGU project 43031. Kemakta AR 2005–01, Stockholm [Kvarntorp. Kvarntorpsområdet, studie av grundvattensystemet, in Swedish]
Watzlaf GR, Schroeder KT, Kairies CL (2000) Long-term performance of anoxic limestone drains. Mine Water Environ 19:98–110
Yang J, Tang Y, Yang K, Rouff AA, Elzinga EJ, Huang J-H (2014) Leaching characteristics of vanadium in mine tailings and soil near a vanadium titanomagnetite mining site. J Hazard Mater 264:498–504