Stabilisation of metals in mine spoil with amendments and growth of red fescue in symbiosis with mycorrhizal fungi

L. Simon, J. Tamás, E. Kovács, B. Kovács and B. Biró
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L. Simon: Department of Land and Environmental Management, College of Nyíregyháza, Nyíregyháza, Hungary
J. Tamás: Department of Water and Environmental Management, University of Debrecen, Hungary
E. Kovács: Department of Water and Environmental Management, University of Debrecen, Hungary
B. Kovács: Department of Food Science and Technology, University of Debrecen, Debrecen, Hungary
B. Biró: Laboratory of Rhizobiology, Research Institute for Soil Science and Agricultural Chemistry of the Hungarian Academy of Sciences, Budapest, Hungary

Plant, Soil and Environment, 2006, vol. 52, issue 9, 385-391

Abstract: Metal stabilisation effects of amendments (1% m/m CaCO3-L, 5% m/m municipal sewage sludge compost-MSSC, and 7.5% m/m natural zeolite-Z) were studied on acidic mine spoil (pHKCl 3.73) from Gyöngyösoroszi (Hungary) containing Cd-15.0, Cu-336, Mn-568, Pb-1919, and Zn-3306 mg/kg. Red fescue (Festuca rubra, cv. Keszthelyi 2) was grown in a pot experiment in amended mine spoil, and was infected with spores of a Zn-tolerant arbuscular mycorrhizal fungi (AMF) Glomus intraradices. During 12 weeks of plant growth L + MSSC + Z amendments were more effective in stabilizing the pH, reducing the leaching and phytoavailability of metals in mine spoil than the lime application itself. Liming (L) had a negative effect on Cd, Mn and Zn concentrations in mine spoil water (leachate) as compared to the untreated control. In mine spoil stabilized with a combination of amendments red fescue growth can be established in symbiosis with AMF. Rate of AMF infection (F 4%) was low in limed mine spoil but was especially high (F 93%) in the case of L + MSSC + Z application. In shoots of these cultures - as a trend - AMF reduced the concentration of Cd by 35-55%, Cu by 9-34%, Mn by 14-55%, and Zn by 22-44%.

Keywords: stabilisation; heavy metals; mine spoil; amendments; red fescue; arbuscular mycorrhizal fungi (search for similar items in EconPapers)
Date: 2006
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Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlpse:v:52:y:2006:i:9:id:3456-pse

DOI: 10.17221/3456-PSE

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