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Determination of in situ speciation of manganese in treated acid mine drainage water by using multiple diffusive gradients in thin films devices |
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| Authors: | Rodrigo Lopes F de Oliveira Jorge H Pedrobom Amauri A Menegário Roberto N Domingos Delcy A Py Júnior Chang Hung Kiang |
| Institution: | 1. Centro de Estudos Ambientais - CEA, UNESP - Universidade Estadual Paulista, Avenida 24-A, 1515, CEP 13506-900 Rio Claro, SP, Brazil;2. INB - Indústrias Nucleares do Brasil, Estrada Poços – Andradas Km 20,6, CEP 37780-000 Caldas, MG, Brazil;3. Laboratório de Estudos de Bacias - LEBAC, Instituto de Geociências e Ciências Exatas - IGCE, UNESP - Universidade Estadual Paulista, Avenida 24-A, 1515, CEP 13506-900 Rio Claro, SP, Brazil |
| Abstract: | Acid mine drainage (AMD) is a serious environmental problem that creates acidic solution with high Mn concentrations. The speciation of residual Mn from AMD after an active treatment involving the addition of a neutralizing agent can reliably evaluate the treatment efficiency and provide knowledge of the Mn species being inputted into the environment. The aim of this study was to evaluate the in situ lability and speciation of Mn using the diffusive gradients in thin films (DGT) technique with treated drainage water from a uranium mine (TAMD). DGT devices with different binding phases (Chelex-100 and P81 and DE81membranes) were used to perform the in situ speciation of Mn. |
| Keywords: | Speciation Manganese Uranium mine Acid mine drainage Passive sampler |
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