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Characterization of Mobility and Leaching from Redox Sensitive Materials PDF Print E-mail

Redox sensitive elements are an environmental challenge, and materials such as Blast Furnace Slag and mining waste may in certain conditions generate acid leachates. There is a need to improve the characterization of such materials to be able to manage them in an environmentally safe way.
This project seeks to improve the characterization of redox sensitive materials, and test the feasibility of a suggested treatment method for mining waste based on green liquor dregs (GLD).
The application of green liquor dregs and other pulping by-products to the solidification/stabilisation of copper mine tailings wil be evaluated and in particular the potential of using GLD for the treatment of old tailings.

Results from batch compliance leaching test at L/S 10 with As-polluted soil (Maurice et al 2007).
The oxidation front is often visible in tailings i.e. the oxidised tailing is red while the reduced sulphides are black or grey.

Project leader: Christian Maurice, LTU
Contact: Mobil +46 (0)70 609 01 95
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Partners: Ecoloop, Swedish Road administration,
Billerud, Processum, Ramböll
Project timeframe: jan. 2009 - Oct. 2011
Budget 100 000 €

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Presentation Nov 9, 2009

pdf ThS_A17_Makitalo_etal.pdf