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Home Results and reports Tech and sci description Impact and dissemination Consortium description Project management Contact

The project objectives are:

Objective 1 To produce cost-effective tools for the evaluation of metals’ stocks and their mineralogical forms in tailing dams

Rationale: Evaluating the stocks and mineralogical forms of metals in the tailing dams by an efficient combination of geophysical and geochemical methods is needed both for their cross-scale hazard assessment (by the characterization of metals mobility from the tailing dam, Jianu et al. 2012), and for the evaluation of the economic importance by re-exploitation. The deliverables of this objective are of direct interest for the private companies involved in the remediation and re-exploitation of tailing dams.


Objective 2 To produce effective tools for the remediation of tailing dams

Rationale: The not exploitable tailing dams with large hazard and the re-located tailing dams resulted after re-exploitation should be subject to remediation plans aiming at the control of metals mobility. Current techniques are cost intensive and with low efficiency on average and long term. Techniques using the potential of native plant species and microorganisms growing on abandoned tailing dams and in the surroundings landscape, able to develop on the tailing material with minimal amendments, are a cheaper alternative. This objective is convergent with existing efforts in European scale projects (www.umbrella.uni-jena.de) and will capitalize on the research expertize of the project team in such project (Neagoe et al. 2012a, 2012b). An aspect not yet solved tackled by the project is also the site-specific methodology for optimal coupling of subsurface remediation methods with measures in the substrate layer relevant for plants. The deliverables of this objective (safe and efficient methodology for remediating or re-depositing the material using geochemical and biological techniques) are of direct interest for the private companies involved in the remediation and re-exploitation of tailing dams.


Objective 3 To develop innovative environmental services for the design of coupled monitoring systems and coupled environmental management plans in contaminated river basins

Rationale: The management plans of the tailing dam aiming at the reduction of metals mobility, with or without re-exploitation, will change the structure of the river basin landscape and the functioning of its elements as sources and sinks of metals at time scales relevant for the management of water and sediment quality in the catchment (Iordache et al. 2012). Integrated modeling is a key tool for integrated management design (Iordache et al. 2009). The deliverables of this objective are of direct interest for the farmers, local administrations and public bodies involved in the management of water quality and quantity under Water Framework Directive and in the biodiversity management in catchments subject to remediation and re-exploitation of tailing dams. They will also allow the private companies acting at tailing dam scale to prove the positive externalities of their projects, and in this way to obtain the public support needed in the environmental impact assessment phase of the remediation and/or re-exploitation projects.


The corresponding outcomes to each objective are presented in table 2 below.


Table 2 Objectives, outcomes of the project and specific methodology of production.


Objectives

Work package


Outcomes

Methodology of production


Innovative environmental service

Innovative tool or technology used in the delivery of the service


Objective 1

To develop an innovative environmental service assisting the decision on the effective management of tailing dams

WP1 Stocks and forms of toxic elements in tailing dams


Speaker Valentina Cetean, S.C. Prospectiuni S.A.

S1 Cost-effective evaluation of metals’ stocks and their mineralogical forms in tailing dams

Combination of geophysical and geochemical methods


Coupled geochemical, geophysical, mineralogical and modeling methods

Objective 2

To develop an innovative eco-technology for the remediation of tailing dams

WP2 Eco-remediation of tailing dams


Speaker Aurora Neagoe, UB – Research Center for Ecological Services

Cost-effective and environmental friendly eco-remediation of tailing dams


T1 Remediation eco-technology based on a combination of native plant species, bacterial inoculum and fungal inoculum and subsurface methods in function of geochemical, geomophological, and ecological setting

Vegetation study, field experiment on tailing dams, up-scaling model from the scale of experimental plots to that of tailing

Objective 3

To develop innovative environmental services for the design of coupled monitoring systems and coupled environmental management plans in contaminated river basins

WP3 Hydrogeology of contaminated floodplains


Speaker Daniel Scrădeanu, UB - Hydrogeology

S2 Prediction of distribution of pollution hot-spots n the floodplain groundwater in contaminated river basins

Model for downscaling concentrations of toxic elements in groundwater coupled to models for toxic elements transport downstream

Stochastic (by internal and landscape variables) in comparison with deterministic one (geophysical methods for identifying the heterogeneity of variables controlling groundwater flow and contaminant distribution at small scale)

WP4 Integrated management of contaminated river basins


Speaker Virgil Iordache, Department of Systems Ecology and Sustainability


S3 Prediction of the distribution of pollution hot-spots relevant for human and species health in the floodplain soil in contaminated river basins


Transfer functions from the scale of floodplain buffer zones to the scale of the receptor populations and organizations.


Coupled geochemical, ecological, geo-statistical and modeling methods.


S4 Optimization of the monitoring systems downstream mining areas


Not the case


Based on S2 and S3 coupled with existing transport models, elaborated in the frame provided by EIA, post-closure monitoring and the monitoring requested by WFD


S5 Assistance for the integration of organizational environmental management plans based on negative and positive externalities between multiple stakeholders in contaminated river basins


Not the case


Based on S1 – S4 and T1 and on the adaptation of the concept of river basin forum by including all stakeholders affected by the dispersion of toxic elements downstream mining areas (mining industry, households, farmers, protected areas, water authorities, local public authorities).