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Several experiments were conducted to evaluate the activity and growth of sulfate-reducing bacteria (SRB) in a metal-rich culture medium (approx. 250mg/L Fe, 75mg/L Zn and Cu, 10mg/L Cd) with phosphogypsum as bacterial inoculum. Phosphogypsum was collected from the stack covering the salt-marshes of the Tinto river (SW Spain). Three organic amendments were used as carbon sources, two low-cost wastes...
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