Evaluation of heavy metal bio-availability from Almagrera pyrite-rich tailings dam (Iberian Pyrite Belt, SW Spain) based on a sequential extraction procedure

Álvarez-Valero, Antonio M.; Sáez, Reinaldo; Pérez‐López, Rafael; Delgado, Joaquín Montalván; Nieto, José Miguel

doi:10.1016/j.gexplo.2009.02.005

Cited by 78 publications

(36 citation statements)

References 28 publications

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“…As it was predictable, Zn, Fe and Mn are predominately bonded to iron and manganese (F4): 37%, 51 and 40%, respectively. F4 is known as reducible fraction (Álvarez-Valero et al, 2009) can easily be reduced and converted to exchangeable fraction; especially in anaerobic condition as it use to be in agricultural soil. As a consequence, due attention should be paid to metals stabilization in the sewage sludge to enhance and promote its agricultural use.…”

Section: Sequential Extraction and Eco-toxicological Risksmentioning

confidence: 99%

Utilization of Sewage Sludge in Agricultural Soil as Fertilizer in the Republic of Benin (West Africa): What are the Risks of Heavy Metals Contamination and Spreading?

Suanon¹,

Tometin²,

Dimon³

et al. 2016

American Journal of Environmental Sciences

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Abstract:Biosolids are the treated organic residuals, also known as sewage sludge, which are generated from domestic wastewater treatment plants. It is an organic matter and nutrients [phosphorous (P) and nitrogen (N)]-rich material. Due to these properties, it is has been reported to be a suitable fertilizer or soil amendment which can valuably replace synthesized NPK. Unfortunately, this matter is heavily loaded with inorganic pollutants, namely heavy metals which limit its land application. Here, we evaluated the quality of treated sewage sludge from Wastewater Treatment Plants (WWTP) in the republic of Benin; and assessed the eco-toxicological risks of heavy metals contamination and spreading related to the use of sludge as fertilizer in agriculture. Results revealed a slightly alkaline (pH ≥6.5) and high electrical conductivity (EC >4 mS cm −1 ) of the sludge. Heavy metals including Cd, Co, Cu, Zn, Ni, Cr, Pb, Fe and Mn contents were at high level: 27.1, 18.6, 777.1, 1271.7, 165.5, 297.0, 131.2, 3184.0 and 394.2 mg kg −1 DM, respectively. Further fractionation of metals showed high mobility of metals classified as follow: Cu > Cd > Pb > Cr > Ni > Fe > Mn > Co > Zn. As a consequence, although the sludge is rich in organic matter and phosphorous, its high value of EC and heavy metals contents, with high mobility do not favor its used in agriculture soils. In addition, metals were enriched in the sludge; meaning that anthropogenic sources, human activities greatly contributed to the accumulation of metals in the sludge.

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Section: Sequential Extraction and Eco-toxicological Risksmentioning

confidence: 99%

Utilization of Sewage Sludge in Agricultural Soil as Fertilizer in the Republic of Benin (West Africa): What are the Risks of Heavy Metals Contamination and Spreading?

Suanon¹,

Tometin²,

Dimon³

et al. 2016

American Journal of Environmental Sciences

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“…8b). Probably, these sediments come from the Almagrera sulphide tailings dam (Adánez Sanjuán et al 2014b), part of which was removed due to a strong storm occurred in 1988 (Á lvarez-Valero et al 2009). The ranges of Pb ratios in Tinto and Odiel rivers are much smaller than in the profiles from Madrid Area.…”

Section: Tinto-odiel Basinmentioning

confidence: 99%

Application of lead isotopic methods to the study of the anthropogenic lead provenance in Spanish overbank floodplain deposits

Sanjuan

Flem

Borrajo

et al. 2015

Environ Geochem Health

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Changes in the principal sources of Pb in overbank sediment profiles have been documented for two Spanish areas by using Pb isotopes and Pb concentrations. These locations (Madrid and Tinto-Odiel basin) represent two of the most contaminated regions in Spain. The Community of Madrid is characterized by heavy industrial and urban activity, focused mainly in Madrid City. The Tinto-Odiel basin drains the Iberian Pyrite Belt, which hosts many polymetallic massive sulphides and is heavily affected by mining activities in their headwaters. It has been proven that the influence of anthropogenic activity is reflected in these overbank deposits by variations in Pb concentrations that, in general, correlate with shifts in the (206)Pb/(207)Pb ratio. Rivas profile (downstream of Madrid) was found to be the most anthropogenically influenced site. The sediments within this profile which were recently deposited (170 ± 40 years BP) have the least radiogenic signatures. (206)Pb/(207)Pb ratios ranged between 1.1763 and 1.1876 indicating significant contributions of anthropogenic Pb. In contrast, profiles upstream of Madrid possess an average (206)Pb/(207)Pb ratio of 1.2272. It is difficult to clearly identify the most prominent source as the sediments appear to be characterized by an input from several sources. The floodplain profiles in the Tinto-Odiel basin exhibit uniform (206)Pb/(207)Pb ratios ranging from 1.1627 (Odiel river) to 1.1665 (Tinto river). These ratios are similar to the ones possessed by sulphide ores in the area and differ from the ratios of other nonmineralized formations in the basin, indicating that mining activities are the primary, if not sole, source of Pb to the sediments.

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“…Therefore, in the case of a dam fai lure, the potential irupact of the Monte Romero sludge would have a similar eff ect on water and soil quality due to its metal load, although a signifi cantly smaller area would be aff ected. Finally, the pollutant potential of the sulfi de tailings depends on their capacity to release toxic elements (which can be evaluated by means of a sequential extraction procedure, e.g., A lvarez- Valero et al 2009;Perez-L6pez et aL 2008), and the chemical species involved in the mobilization of metals. Therefore, future work in these mine ponds must be focused on the factors controlling the bio-availability of heavy metals.…”

Section: Environmental Concernsmentioning

confidence: 99%

“…The mining industry in the province of Hue Iv a left 19 tailings dumps; 11 are in an abandoned state (IGME 1998) and represent an important contamination problem (Acero et al 2007;Alvarez-Valero et al 2009;Hudson-Edwards et al 1999;Perez-L6pez et al 2007;Simchez Espaii a et al 2005). Remediation has only been carr ied out in a few of the dumps, although they still show significant environmental problems (Martin-Crespo et al 2010).…”

Section: Introductionmentioning

confidence: 99%

A Geochemical and Geophysical Characterization of Sulfide Mine Ponds at the Iberian Pyrite Belt (Spain)

Crespo

Martín-Velázquez

Gómez-Ortíz

et al. 2010

Water Air Soil Pollut

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Evaluation of heavy metal bio-availability from Almagrera pyrite-rich tailings dam (Iberian Pyrite Belt, SW Spain) based on a sequential extraction procedure

Cited by 78 publications

References 28 publications

Utilization of Sewage Sludge in Agricultural Soil as Fertilizer in the Republic of Benin (West Africa): What are the Risks of Heavy Metals Contamination and Spreading?

Utilization of Sewage Sludge in Agricultural Soil as Fertilizer in the Republic of Benin (West Africa): What are the Risks of Heavy Metals Contamination and Spreading?

Application of lead isotopic methods to the study of the anthropogenic lead provenance in Spanish overbank floodplain deposits

A Geochemical and Geophysical Characterization of Sulfide Mine Ponds at the Iberian Pyrite Belt (Spain)

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