Effects of eutrophic water flooding on nitrate concentrations in mine wastes

González-Alcaraz, María Nazaret; Egea, C.; María-Cervantes, Antonio; Jiménez-Cárceles, Francisco J.; Álvarez-Rogel, José

doi:10.1016/j.ecoleng.2010.02.009

Cited by 13 publications

(4 citation statements)

References 56 publications

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“…Our results agree with other studies conducted in mine soils flooded for long periods, in which the Eh reached lower values in the presence of vegetation (González-Alcaraz et al, 2011b;. It is well known that plant roots may condition some geochemical parameters, such as pH and Eh, relative to the bulk soil .…”

Section: Processes In the Flooding Watersupporting

confidence: 92%

Dynamics of nitrogen, phosphorus and metals in eutrophic wetlands affected by mine wastes. Effects of liming on plant growth and metals mobility

González¹,

Nazaret²

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and water-soluble organic carbon in the soil solution were regularly monitored. Before and after the flooding period, a soil P-fractionation was performed.-In relation to N dynamics, the NO 3 concentrations in the soil solution decreased between 70 and 90% by the second day of flooding, except in the unvegetated pots with the soil of pH~6.2. Denitrification was the main mechanism associated to the removal of NO 3 -. The role of vegetation in improving the rhizospheric environment was relevant in the soil of pH~6.2 because higher sand content, lower pH, and higher soluble metal concentrations might strongly hinder microbial activity.-In relation to P dynamics, the PO 4 3concentrations in the soil solution decreased between 80 and 90% after three hours of flooding, with and without vegetation. The Fe/Mn/Al oxides and the Ca/Mg compounds played an important role in soil P retention. In the pots with S. fruticosa, the reductive conditions induced P release from metal oxides and P retention to Ca/Mg compounds. In turn, P. australis may have favoured the release of P from carbonates, which was transferred to Fe/Mn/Al compounds. In the second experiment, soils with fine texture from the Marina del Carmolí (in this case of pH~6.4) and sandy soils from the Lo Poyo salt marsh (in this case of pH~3.1) were used. Each type of polluted soil was mixed with a lime amendment (dose of 20 g kg -1 ), assaying two treatments: non-limed and limed soil. Cuttings of S. fruticosa were planted in pots prepared with the soil treatments. The pots were irrigated for 10 months with eutrophic water and soluble metal concentrations (Al, Cd, Mn, Pb, and Zn) and plant survival, plant biomass, and plant metal content were determined. The lime amendment decreased the concentrations of soluble metals and favoured the growth of S. fruticosa, enhancing the capacity of the plant to phytostabilise metals in roots. In the third experiment, soils with fine texture from the Marina del Carmolí (in this case of pH~6.4) and sandy soils from the Lo Poyo salt marsh (in this case of pH~3.1) were used. Each type of polluted soil was mixed with a lime amendment (dose of 20 g kg -1 ). Simulated soil profiles (60 cm depth) were constructed and four treatments were assayed: without liming + without plant, without liming + with plant, with liming + without plant, and with liming + with plant. The plant species employed was S. fruticosa. Three horizons were differentiated in the soil profiles: A (never under water), C1 (alternating flooding-drying conditions), and C2 (always under water). The pH, Eh, and soluble metal concentrations (Cd, Cu, Fe, Mn, Pb, and Zn) were measured regularly at each depth for 18 weeks. At the end of the experiment a soil metalfractionation was applied. The lime amendment favoured the growth of S. fruticosa, an increase in pH, and a drop in Eh. -In relation to Fe dynamics, liming decreased Fe solubility, mainly in the soil of pH~3.1, but also facilitated a drop in Eh, favouring the dissolution of amorphous Fe oxides and hence increasing the c...

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Section: Processes In the Flooding Watersupporting

confidence: 92%

Dynamics of nitrogen, phosphorus and metals in eutrophic wetlands affected by mine wastes. Effects of liming on plant growth and metals mobility

González¹,

Nazaret²

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“…The Wełnowiec dump features/conditions favour plant growth, e.g. an abundance of emitted CO 2 , nitrates, ammonia acting as a fertiliser, and heated warm surfaces, even in winter (Doerr and Shakesby, 2013;Komnitsas et al, 2010;González-Alcaraz et al, 2011). This enables the occurrence of special and rare species (Vanderpoorten, 2001;Ciesielczuk et al, 2015).…”

Section: Compounds Related To An Urban Rubbish Dump Covered With Coalmentioning

confidence: 99%

Application of organic environmental markers in the assessment of recent and fossil organic matter input in coal wastes and river sediments: A case study from the Upper Silesia Coal Basin (Poland)

Nádudvari

Marynowski

Fabiańska

2018

International Journal of Coal Geology

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“…The flooding dynamics in salt marshes cause changes in the aforementioned factors which constantly modify metal balance in the soil-plant system (Williams 2002). In addition, vegetation in salt marshes plays an important role in controlling metal(loid)s' mobility since it is known that rhizosphere may modify soil parameters such as redox conditions, pH, organic matter content, and microbial activity (Wenzel 2009;González-Alcaraz et al 2011).…”

Section: Introductionmentioning

confidence: 99%

Role of rhizosphere and soil properties for the phytomanagement of a salt marsh polluted by mining wastes

Conesa¹,

María-Cervantes²,

Álvarez-Rogel³

et al. 2013

Int. J. Environ. Sci. Technol.

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The goal of this study was to evaluate the soil properties and their modifications within the rhizosphere of spontaneous vegetation as key factors to assess the phytomanagement of a salt marsh polluted by mining wastes. A field survey was performed based on a plot sampling design. The results provided by the analyses of rhizospheric soil (pH, electrical conductivity (EC), organic carbon, total nitrogen, etc.) and metal(loid)s' phytoavailability (assessed by EDTA) were discussed and related to plant metal uptake. The averages of pH and EC values of the bulk soil and rhizospheric samples were in the range of neutral to slightly alkaline (pH 7-8) to saline ([2 dS m -1 ), respectively. Heavy metal and As concentrations (e.g. *600 mg kg -1 As, *50 mg kg -1 Cd, *11,000 mg kgPb) were higher in the rhizosphere for both total and EDTA-extractable fraction. Phragmites australis uptaked the highest concentrations in roots (e.g. *66 mg kg -1 As, *1,770 mg kg -1 Zn) but not in shoots, for which most of plant species showed low values for Zn (\300 mg kg -1 ) but not for Cd ([0.5 mg kg -1 ) or Pb (*20-40 mg kg -1 ). Vegetation distribution in the studied salt marsh looked to be more affected by salinity than by metal pollution. The free availability of water for plants and the incoming nutrient-enriched effluents which flow through the salt marsh may have hindered the metal(loid)s' phytotoxicity. The phytomanagement of these polluted areas employing the spontaneous vegetation is a good option in order to improve the ecological indicators and to prevent the transport of pollutants to nearby areas.

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Effects of eutrophic water flooding on nitrate concentrations in mine wastes

Cited by 13 publications

References 56 publications

Dynamics of nitrogen, phosphorus and metals in eutrophic wetlands affected by mine wastes. Effects of liming on plant growth and metals mobility

Dynamics of nitrogen, phosphorus and metals in eutrophic wetlands affected by mine wastes. Effects of liming on plant growth and metals mobility

Application of organic environmental markers in the assessment of recent and fossil organic matter input in coal wastes and river sediments: A case study from the Upper Silesia Coal Basin (Poland)

Role of rhizosphere and soil properties for the phytomanagement of a salt marsh polluted by mining wastes

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