Pedogenesis in mine tails affects macroporosity, hydrological properties, and pollutant flow

Pellegrini, S.; García, Gregorio; Peñas-Castejon, Jose Matías; Vignozzi, Nadia; Costantini, E.

doi:10.1016/j.catena.2015.07.027

Cited by 30 publications

(13 citation statements)

References 33 publications

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“…High acidity is often found in contaminated soils of mining sites, where pH values can be very low. Restoration of such sites can be particularly challenging, since high acidity and heavy metals' phytotoxicity can combine with soil physical and hydrological inhospitality to target plants (Pellegrini et al, 2016).…”

Section: Chemical Soil Indicatorsmentioning

confidence: 99%

Soil indicators to assess the effectiveness of restoration strategies in dryland ecosystems

Costantini¹,

et al. 2016

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Abstract. Soil indicators may be used for assessing both land suitability for restoration and the effectiveness of restoration strategies in restoring ecosystem functioning and services. In this review paper, several soil indicators, which can be used to assess the effectiveness of ecological restoration strategies in dryland ecosystems at different spatial and temporal scales, are discussed. The selected indicators represent the different viewpoints of pedology, ecology, hydrology, and land management. Two overall outcomes stem from the review. (i) The success of restoration projects relies on a proper understanding of their ecology, namely the relationships between soil, plants, hydrology, climate, and land management at different scales, which are particularly complex due to the heterogeneous pattern of ecosystems functioning in drylands.(ii) The selection of the most suitable soil indicators follows a clear identification of the different and sometimes competing ecosystem services that the project is aimed at restoring.

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Section: Chemical Soil Indicatorsmentioning

confidence: 99%

Soil indicators to assess the effectiveness of restoration strategies in dryland ecosystems

Costantini¹,

et al. 2016

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“…Mineral deposits have traditionally been sealed off, although the traditionally used techniques have not been environmentally optimal [22]. Mine waste management systems recommend a geographic description of the residue and its mobility, a revision of the biogenetic and mineral dismantling of sulfide-based residue, a study of jarosite formation and soluble iron sulfates, monitoring the weathering of slag, an analysis of oxidation on the marine floor, the use of wetlands to immobilize trace elements, and the use of microorganisms to reduce the reactivity of mine residues [23].…”

Section: Introductionmentioning

confidence: 99%

Mining Waste and Its Sustainable Management: Advances in Worldwide Research

et al. 2018

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Growing social awareness of the need to adequately treat mining waste in order to protect the environment has led to an increase in the research in this field. The aim of this study was to analyze the dynamics of the research focused on mining waste and its sustainable management on a worldwide scale from 1988 to 2017. A systematic review and a bibliometric analysis of 3577 articles were completed. The results show that research into mining waste has increased, with studies focusing on waste management accounting for almost 40% of the total. The most productive journals in this field were Applied Geochemistry and Science of the Total Environment. The five most productive countries were the United States, Canada, Spain, Australia, and China. Works on the sustainable management of mining waste were in the minority, but it is an area of research that has considerable potential given the growing social awareness of the environmental repercussions of mining activities and the demands for increasingly sustainable practices. The findings of this study could prove useful for studies into mine waste, as they depict a global view of this line of research.

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“…These natural sources of metals, along with the anthropogenic enrichment from mining operations (Alsina et al, ; Bugueno, Acevedo, Bonilla, Pizarro, & Pasten, ; Leiva et al, ; Oyarzun & Oyarzun, ; Oyarzun et al, ) affect both water and sediment quality within the region. It is well known that the origin and effects of acid mine drainage and acid rock drainage are largely controlled by hydrological processes (Cravotta, Goode, Bartles, Risser, & Galeone, ; Harpold, Burns, Walter, Shaw, & Steenhuis, ; Johnson & Thornton, ; Kimball, Broshears, Bencala, & McKnight, ; McKnight et al, ; Papassiopi et al, ; Pellegrini, Garcia, Penas‐Castejon, Vignozzi, & Costantini, ; Wan, Liu, Munroe, & Cai, ). A systematic increase in the concentration of arsenic, copper, iron, and sulfate in Andean watersheds (Pizarro, Vergara, Rodriguez, & Valenzuela, ; Pizarro, Vergara, Morales, Rodriguez, & Vila, ) highlights the need to further improve conceptual models and expand datasets describing the processes underlying the behavior of dissolved and particle‐bound metal fluxes.…”

Section: Introductionmentioning

confidence: 99%

Response of suspended sediment particle size distributions to changes in water chemistry at an Andean mountain stream confluence receiving arsenic rich acid drainage

Abarca

Guerra

Arce

et al. 2016

Hydrological Processes

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Acid drainage is an important water quality issue in Andean watersheds, affecting the sustainability of urban, agricultural, and industrial activities. Mixing zones receiving acid drainage are critical sites where changes in pH and chemical environment promote the formation and dissolution of iron and aluminum oxy/hydroxides. These particles can significantly change the speciation of toxic metals and metalloids throughout drainage networks via sorption, desorption, and settling processes. However, little is known about the behavior of particle size distributions (PSDs) in streams affected by acid drainage and their relationship to metal speciation. This work studied: (a) the PSDs for a wide range of mixing ratios found at a fluvial confluence affected by acid drainage, and (b) the response of PSDs and arsenic speciation to environmental changes found when the particles approach complete mixing conditions. The confluence between the Azufre River (pH ~ 2, high concentration of dissolved metals) and Caracarani River (pH = 8.6, low concentration of dissolved metals) was used as a representative model for study. Field measurements show a bimodal PSD with modal diameters of ~50 and 300 μm. At shorter distances from the junction, the smaller modes with smaller particle volumes were dominant across the stream cross‐sections. A systematic shift towards larger particle sizes and larger particle volumes occurred downstream. The analysis of laboratory PSDs for Azufre/Caracarani mixing ratios between 0.01 and 0.5 (pH from 6.2 to 2.3) showed a bimodal trend with ~15 and 50 μm characteristic diameters; larger particles formed at pH>4. When particle suspensions were transferred in laboratory experiments from very low pH to full mixing conditions (pH ~ 2.8 and mixing ratio ~ 0.25) particle sizes varied, and the dissolved arsenic concentration decreased. The observed reaction kinetics were slow compared to the time scale of advective transport, creating opportunities for engineered controls for arsenic. This work contributes to a better understanding of the chemical‐hydrodynamic interactions in watersheds affected by mining, and identifying opportunities to improve water quality at points of use.

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Pedogenesis in mine tails affects macroporosity, hydrological properties, and pollutant flow

Cited by 30 publications

References 33 publications

Soil indicators to assess the effectiveness of restoration strategies in dryland ecosystems

Soil indicators to assess the effectiveness of restoration strategies in dryland ecosystems

Mining Waste and Its Sustainable Management: Advances in Worldwide Research

Response of suspended sediment particle size distributions to changes in water chemistry at an Andean mountain stream confluence receiving arsenic rich acid drainage

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