Assessment of toxic heavy metals concentrations in soils and wild and cultivated plant species in Limni abandoned copper mining site, Cyprus

Christou, Anastasis; Theologides, Christodoulos P.; Costa, Costas; Kalavrouziotis, Ioannis K.; Varnavas, Soterios P.

doi:10.1016/j.gexplo.2017.03.012

Cited by 116 publications

(46 citation statements)

References 32 publications

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“…health even at relatively low concentrations (Agrafioti et al 2014;Christou et al 2017;Xiao et al 2017). Rapid industrialization and intensive agricultural activities have caused severe heavy metals contamination in the past few decades.…”

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confidence: 99%

Removal of Cd and Pb with biochar made from dairy manure at low temperature

Chen

Zhang

Huang

et al. 2019

Journal of Integrative Agriculture

114

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Biochar (BC) derived from waste products is a cost-effective sorbent for remediation of metal-contaminated soils. We studied the kinetics and adsorption mechanisms for removal of metal ions, such as lead (Pb 2+) and cadmium (Cd 2+) with biochar. The adsorption capacities of BC for Pb 2+ and Cd 2+ increased after alkaline treatment. The highest sorption capacities were 175.53 and 68.08 mg g-1 , for Pb and Cd, respectively. The Langmuir adsorption isotherm and pseudo second kinetic equation could well fit the adsorption processes, revealing that the sorption mechanisms of Pb 2+ and Cd 2+ by BC are complex and predominantly controlled by chemisorption. BC has a higher affinity for Pb than Cd, due to easy hydrolysis of Pb at low pH. Furthermore, precipitation as carbonate minerals (2PbCO 3 •Pb(OH) 2 and CdCO 3) and complexation with functional groups (carboxyl and hydroxyl) were also important for adsorption of Pb and Cd by BC.

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confidence: 99%

Removal of Cd and Pb with biochar made from dairy manure at low temperature

Chen

Zhang

Huang

et al. 2019

Journal of Integrative Agriculture

114

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“…However, to obtain more realistic reference values, the using of elemental concentrations of either local or regional geochemical values is preferred by many authors (e.g. Kříbek et al, 2014;Wu et al, 2014;Zhang et al, 2014;Christou et al, 2017;Pan et al, 2017a;Pan et al, 2017b;Shang et al, 2017;Akopyan et al, 2018). Therefore, for the calculation of environmental indexes, particularly the enrichment factor, it is essential the using of conservative reference elements.…”

Section: Conservative Reference Elementsmentioning

confidence: 99%

A multi-elemental study to establish the natural background and geochemical anomalies in rocks from the Sonora river upper basin, NW Mexico

Calmus¹,

Valencia-Moreno²,

Río-Salas³

et al. 2018

revmexcg

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Growing industrialization, including mining activity, dramatically increases environmental pollution. Exploitation of natural resources triggers landscape alteration, inputs of potentially toxic chemical elements to the environment and health diseases. In the case of mining activity, the measure of any associated environmental disturbance requires a geochemical background as a reference frame. Since in Mexico, there is a lack of this type of references in mining districts, the present study took a recent mining spill as an opportunity to establish the geochemical background of the upper Sonora river basin, which includes active and historical mining areas. The weighted average of elemental values was calculated using GIS tools. The data show that rocks have a similar geochemical behavior, which is characterized by pristine enrichment of Mn, Ca, P, Ba, Zn, As, Ag, Sb, W, Pb and Bi relative to the upper continental crust. Coefficients of variation values reveal that Sc, Y, Zr, Ce, Yb, Fe, Ti and Al display a conservative behavior and, therefore, they are recommended to be used as reference elements in environmental studies in the basin. The findings of this work highlight the need of determining the geochemical background in mining regions to reach more realistic environmental assessments.Key words: geochemical background; conservative reference elements; Sonora river upper basin; mining district, Mexico. RESUMEN La creciente industrialización, incluyendo la actividad minera, in-

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“…Abandoned and/or paralyzed mining sites that are distributed along the country constitute potential sources of air, water and soil pollution, as well as potential harm to the environment and population's health (Obiora et al 2016, Antoniadis et al 2017, Ghorbani and Kuan 2017, Christou et al 2017, Espinoza and Morris 2017, Unger 2017.…”

Section: Introductionmentioning

confidence: 99%

Necessity of Intervention Policies for Tailings Identified in the Antofagasta Region, Chile

Esquenazi

Norambuena

Bacigalupo

et al. 2019

Rev. Int. Contam. Ambie.

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The aim of this work was to establish the intervention requirements of 30 tailings deposits located in the region of Antofagasta, Chile, identified in the National Tailings Survey carried out by the National Service of Geology and Mining of the Chilean government in 2017. For the evaluation, the data of 49 geochemical characterizations of the samples registered as of October 2017 were considered. The methodology used for evaluation was based on the Dutch Soil Regulation Circular, from which two ways of assessment were developed. The first approach uses a simple graphic method that depends only on the concentration of the elements in the solid phase of tailings and the percentage of clay in the soil. The second approach considers that the information related to the clay percentage is not available, therefore, this work defines the concepts of threshold factor and adjusted threshold factor. Using the proposed method, this work presents the analysis carried out on the elements of environmental significance related to mining activity in Chile: Cu, Cr, Ni, Zn, Pb, As, Cd and Hg. The methodology allows delimiting areas of foreseeable risks for people and/or environment, resulting in three criteria for each element: 1) requires intervention, 2) requires conditional intervention, 3) does not require intervention. These results are summarized by means of a final score that determines the level of priority assigned to each sample. The analysis of results indicates that Hg intervention is not required, there being only one case requiring conditional intervention. Regarding Cu and Zn, 100 % of the measurements indicated at least the requirement of a conditional intervention. Within the region, the commune of Sierra Gorda contains 67 % of the tailings whose intervention must be prioritized according to the score obtained (greater than four out of a possible maximum of eight). On the other hand, the two tailings of greater tonnage (the sites of Talabre and Laguna Seca) do not present a requirement for priority intervention at the moment.

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Assessment of toxic heavy metals concentrations in soils and wild and cultivated plant species in Limni abandoned copper mining site, Cyprus

Cited by 116 publications

References 32 publications

Removal of Cd and Pb with biochar made from dairy manure at low temperature

Removal of Cd and Pb with biochar made from dairy manure at low temperature

A multi-elemental study to establish the natural background and geochemical anomalies in rocks from the Sonora river upper basin, NW Mexico

Necessity of Intervention Policies for Tailings Identified in the Antofagasta Region, Chile

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