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Kinetics of lead release from soils at historic mining and smelting sites, determined by a modified electro-ultrafiltration

Author

Listed:
  • Anto Jelecevic

    (Universityof Natural Resources and Life Sciences Vienna, Vienna, Austria)

  • Dietmar Horn

    (BGD Bodengesundheitsdienst GmbH, Ochsenfurt, Germany)

  • Herbert Eigner

    (AGRANA Research & Innovation Center GmbH, Tulln, Austria)

  • Manfred Sager

    (Bio Forschung Austria, Vienna, Austria)

  • Peter Liebhard

    (Universityof Natural Resources and Life Sciences Vienna, Vienna, Austria)

  • Karl Moder

    (Universityof Natural Resources and Life Sciences Vienna, Vienna, Austria)

  • Daniel Vollprecht

    (Montanuniversitaet Leoben, Leoben, Austria)

Abstract

Within a pilot study, after pedological and mineralogical characterization, various kinetic models were tested to fit lead (Pb)-mobilization kinetics from soils at historic mining and smelting sites. Pb mobilization was obtained by modified electro-ultrafiltration (EUF) after addition of diethylenetriaminepentaacetic acid (DTPA) at variable conditions of extraction. 10 fractions were sequentially produced, under mild conditions at 20°C/200 V (to simulate an initial release) for fractions 1-5, and subsequently harder conditions at 80°C/400 V (to simulate a long-term release) for fractions 6-10. The special samples treated within this work yielded higher extraction rates within the first runs. Closest fits in terms of the coefficient of determination (R2) were obtained from the 2nd order polynomial model y = a + bt + ct2, and in terms of re-calculated results by the parabolic equation y = a + b √t. The fitted constants obtained by the modified EUF method correlated better with soil pH than with organic carbon and clay contents. From this, it remains open, whether the dissolution of the Pb-minerals in the electric field or concentration resp. diffusion of the DTPA is rate-determining.

Suggested Citation

  • Anto Jelecevic & Dietmar Horn & Herbert Eigner & Manfred Sager & Peter Liebhard & Karl Moder & Daniel Vollprecht, 2019. "Kinetics of lead release from soils at historic mining and smelting sites, determined by a modified electro-ultrafiltration," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 65(6), pages 298-306.
    • Handle: RePEc:caa:jnlpse:v:65:y:2019:i:6:id:611-2018-pse
    DOI: 10.17221/611/2018-PSE
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    References listed on IDEAS

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    1. N. Finžgar & P. Tlustoš & D. Leštan, 2007. "Relationship of soil properties to fractionation, bioavailability and mobility of lead and zinc in soil," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 53(5), pages 225-238.
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