Time Evolution of an AMD-Affected River Chemical Makeup

Torre, M. L. de la; Grande, J. A.; Jiménez, A.; Borrego, J.; Curiel, Jesús María Díaz

doi:10.1007/s11269-008-9326-9

Cited by 25 publications

(12 citation statements)

References 15 publications

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“…The statistical summary of the variables shows values which are characteristic of channels undergoing AMD processes within the described hydrological and mining context (Sáinz et al 2002(Sáinz et al , 2004Sánchez-Rodas et al 2005;Grande et al 2000Grande et al , 2003aNieto et al 2007;Cánovas et al 2008;de la Torre et al 2009;Jiménez et al 2009;Sarmiento et al 2009;Grande et al 2010b). The worsening of the water quality in the Tinto and Odiel rivers is the result of the intense mining activity of sulfides for over 2,000 years.…”

Section: Discussionmentioning

confidence: 99%

“…The Iberian Pyrite Belt is an extremely important AMD-producing source which has been widely described in the past years (Grande et al 2005b;España et al 2005;Nieto et al 2007;de la Torre et al 2009;Jiménez et al 2009;Sarmiento et al 2009). Sulfate, metal and acidity total input to the Atlantic Ocean as described by Sáinz (1991) amounts to 1,200,000 t/year of sulfate and 20,000 t/year of heavy metals, which gives an idea of the magnitude of the phenomenon.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Tinto Versus Odiel: Two A.M.D. Polluted Rivers and an Unresolved Issue. An Artificial Intelligence Approach

Grande

Aroba

Andújar

et al. 2011

Water Resour Manage

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The Iberian Pyrite Belt (SW Spain) is a highly relevant source of Acid Mine Drainage contamination on a global scale. Although the Tinto and Odiel Rivers, which cross the Iberian Pyrite Belt, have been widely studied by various authors, an issue is still pending: the study of the metal load distribution undergone by each of these rivers and, hence, the establishment of cause-effect relationships between the transported load in the final sections of both rivers, upstream of the tidal influence limits, and the characteristics of the input in each of the basins. To solve this, a water sampling campaign was conducted on both rivers on a daily basis from mid September 2007 to the end of May 2008, where pH, conductivity, redox potential, As, Cd, Fe, Cu, Zn, Mn and sulfate were analyzed. The results were treated with the PreFurGe tool, which is based on Fuzzy Logic. This showed that the order of abundance for the parameters analyzed for the Odiel River is SO 4 >Zn>Mn>Fe>Cu>Cd>As, whereas for the Tinto River it is SO 4 >Fe>Cu>Zn>Mn>Cd>As. This last pattern coincides with the order of abundance of elements in Pyrite. In the Tinto River, the metal with the highest rate is Fe, which presents mean values of 361.1 mg/L, whereas in the Odiel River iron mean concentration is 5.34 mg/L. This difference is due to higher precipitation of oxyhydroxysulfates of iron in the Odiel River as a result of the higher intensity of neutralization processes.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Tinto Versus Odiel: Two A.M.D. Polluted Rivers and an Unresolved Issue. An Artificial Intelligence Approach

Grande

Aroba

Andújar

et al. 2011

Water Resour Manage

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“…Also, a lower sulfate concentration is observed in the reservoirs with respect to the rivers (Table 1) due to the dilution processes which take place during large floods, when the water quality in the river improves temporarily (Olías et al 2004;De la Torre et al 2009). Thus, for example, whereas in the Meca River mean sulfate concentration is of 785 mg/L (Table 1), in the Sancho reservoir it is of 121 mg/L (Table 2).…”

Section: Estimationmentioning

confidence: 99%

Water Quality in the Future Alcolea Reservoir (Odiel River, SW Spain): A Clear Example of the Inappropriate Management of Water Resources in Spain

Álvarez

Nieto

Sarmiento

et al. 2010

Water Resour Manage

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The Odiel River is located in southwestern Spain; the greater portion of its basin is composed of materials from the Iberian Pyrite Belt (IBP), an area with numerous massive sulfide deposits that have been highly exploited since the third millennium BC. As sulfides come into contact with the atmosphere due to mining activity, oxidation occurs, generating a highly toxic acidic leachate with large concentrations of sulfates and metals, a process which is known as acid mine drainage (AMD). As a result, the Odiel River and most of its tributaries are severely contaminated. The construction of two large dams in the Odiel River basin is planned. The most advanced project is that of the Alcolea reservoir, with a storage capacity of 274 hm 3 , whose construction has already begun, with a total budget of around e164 million. There are reasonable doubts about the final quality of the reservoir water, as this dam will regulate a river with a mean pH close to 3.5 and large concentrations of toxic elements. This paper analyzes the data of water quality in the Alcolea reservoir. The results show that the reservoir water will be acidic and not useful at all, although more specific studies are necessary to obtain the exact estimation of its hydrochemical characteristics. It seems unwise to start building the dam, which requires a large economic investment and will have a vast environmental impact, without first conducting these studies. This proves that water management in Spain is still based on political motivation rather than on technical criteria and good management of natural and economic resources.

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“…The IPB is one of the largest metallogenic regions of the world, with numerous giant and supergiant massive sulphide ore deposits (Sáez et al 1999), comprising 1700 Mt of sulphide reserves (Pinedo-Vara 1963). Consequently, the regional drainage network is strongly affected by AMD and acid rock drainage (ARD), as described by several authors: Elbaz-Poulichet et al (1999,2000,2001), Davis et al (2000), Grande et al (2003aGrande et al ( , 2003bGrande et al ( , 2005aGrande et al ( , 2005bGrande et al ( , 2010aGrande et al ( , 2010bGrande et al ( , 2010cGrande et al ( , 2010dGrande et al ( , 2010e, 2011aGrande et al ( , 2011b, Leblanc et al (2000), Borrego et al (2002), Sáinz et al (2002Sáinz et al ( , 2003aSáinz et al ( , 2003bSáinz et al ( , 2004Sáinz et al ( , 2005, Olıás et al (2004Olıás et al ( , 2005aOlıás et al ( , 2005bOlıás et al ( , 2006, Aroba et al (2007), Jiménez et al (2009), de la Torre et al (2009, Carro et al (2011) and Grande (2011).…”

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confidence: 98%

Hydrochemical characterization of an acid mine drainage-affected reservoir: the Sancho Reservoir, Huelva, southwest Spain

Cerón

Grande

Torre

et al. 2014

Hydrological Sciences Journal

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Time Evolution of an AMD-Affected River Chemical Makeup

Cited by 25 publications

References 15 publications

Tinto Versus Odiel: Two A.M.D. Polluted Rivers and an Unresolved Issue. An Artificial Intelligence Approach

Tinto Versus Odiel: Two A.M.D. Polluted Rivers and an Unresolved Issue. An Artificial Intelligence Approach

Water Quality in the Future Alcolea Reservoir (Odiel River, SW Spain): A Clear Example of the Inappropriate Management of Water Resources in Spain

Hydrochemical characterization of an acid mine drainage-affected reservoir: the Sancho Reservoir, Huelva, southwest Spain

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