Assessment of environmental hazards at abandoned mining sites: A case study in Sardinia, Italy

Cidu, Rosa; Dadea, C.; Desogus, Paolo; Fanfani, L.; Manca, P.; Orrù, G.

doi:10.1016/j.apgeochem.2012.02.014

Cited by 32 publications

(13 citation statements)

References 21 publications

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“…3 shows a rather systematic trend as a function of the changing pH during acidification. The drainage data by Cidu et al (2011) for an abandoned Pb, Zn mine are consistent with this pH dependent behaviour as well. This example shows that trends in Cu leaching found in the field are placed in perspective by comparing these results with laboratory characterisation test results.…”

Section: Comparison Of Different Sulphidic Wastessupporting

confidence: 81%

“…2. Data from a humidity test cell study (Kaartinen 2007) and field data (Cidu et al 2011;Druschel et al 2004;GARD Guide 2009;Price 2009) are placed in perspective to the laboratory test data. The pH that is plotted on the x-axis is the natural pH of the leachate at the moment of sampling (for the field data).…”

Section: Comparison Of Different Sulphidic Wastesmentioning

confidence: 99%

“…waste leachate L/S< 0.Cu leaching as a function of pH for laboratory data from Cu mine tailings (T1, T3, T9, and Pyhäsalmi) and field data(Cidu et al 2011;Druschel et al 2004; GARD Guide 2009;Kaartinen 2007;Price 2009) …”

mentioning

confidence: 99%

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Characterisation Leaching Tests and Associated Geochemical Speciation Modelling to Assess Long Term Release Behaviour from Extractive Wastes

Sloot¹,

Zomeren

2012

Mine Water Environ

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A pH dependent leaching test (CEN/TS 14429) and a percolation leaching test (CEN/TS 14405) developed in CEN/TC 292 have been used for the first time to characterise the release behaviour of different sulphidic mining wastes. Geochemical speciation modeling using LeachXS Orchestra provides another type of partitioning between mineral and sorptive phases than is currently practised in the mining industry. Comparing new leaching test data for seven tailings and two waste rock samples with model predictions gives new insights into release behaviour. In leaching, mineral transformations on the surface of waste rock or tailings particles, rather than bulk mineral composition, dictate release, which implies that mineralogical examinations are not necessarily relevant from a leaching perspective. Kinetic aspects of release from sulphidic waste can be addressed by testing material in different stages of oxidation or exposure to atmospheric conditions.

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Section: Comparison Of Different Sulphidic Wastessupporting

confidence: 81%

Section: Comparison Of Different Sulphidic Wastesmentioning

confidence: 99%

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Characterisation Leaching Tests and Associated Geochemical Speciation Modelling to Assess Long Term Release Behaviour from Extractive Wastes

Sloot¹,

Zomeren

2012

Mine Water Environ

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“…Due to the ineffective or totally absent management of mining-related wastes in the last decades, in several Sardinian areas the PTE contamination extended to the surrounding environment, affecting air, water and soils (e.g. Aru et al, 1995;Vacca & Vacca, 2001;Cidu et al, 2001;Concas et al, 2006;Cidu et al, 2011;Fanfani & Ardau, 2011;Vacca et al, 2012;Cidu et al, 2012;Ardau et al, 2013).…”

Section: Accepted Manuscriptmentioning

confidence: 97%

Field sampling of soil pore water to evaluate the mobile fraction of trace elements in the Iglesiente area (SW Sardinia, Italy)

Concas

Ardau

Bonito

et al. 2015

Journal of Geochemical Exploration

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9Field soil pore water monitoring was applied in a highly heavy-metal contaminated area in SW 10 Sardinia, Italy, as a direct, realistic measure of heavy metal mobility. The main chemistry of pore 11 waters well reflects the local characteristics of soils, ranging from Ca-SO 4 to (Ca)Mg-HCO 3 to 12 Ca(Na)-SO 4 (Cl), with a wide range of conductivity. The mobility of Zn and Pb is apparently 13 controlled by equilibrium with minerals such as hydrozincite or smithsonite, and cerussite, 14 respectively. These results allow a correct estimate of the actual environmental risk associated with 15 the presence of heavy metals in soils, and may serve as a supporting tool for phytoremediation 16 planning. 17 18

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“…Abandoned mines are being recovered for touristic and industrial archaeological purposes and constitute a remarkable heritage sponsored by UNESCO. However, because the residues of mining and processing have been dumped on site without adequate disposal, local environments have undergone severe deterioration (Cidu et al [2012] and references therein). Among abandoned mine sites, areas that have been investigated include Montevecchio‐Ingurtosu, Iglesiente, Su Zurfuru, Baccu Locci, and Su Suergiu.…”

Section: Study Areamentioning

confidence: 99%

Metals and Metalloids in Wild Asparagus at Uncontaminated and Mining‐Contaminated Sites

Biddau

Cidu

2017

J of Env Quality

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Wild edible plants are often considered healthier than crops because they are unaffected by fertilizers, herbicides, and pesticides. However, the occurrence of potentially toxic elements in wild plants is poorly known and needs to be assessed. In this study, 22 elements were determined by inductively coupled plasma mass spectrometry in wild asparagus ( L.). Asparagus shoots were collected in uncontaminated environments (20 sites) and in areas contaminated by past mining (15 sites) in Sardinia, Italy. Beryllium, Bi, Te, Tl, and U were not detected in asparagus (<0.03 μg g); Ag, As, Co, Cd, Li, and Sb were detected at very low levels (median, 0.01-0.05 μg g); B, Cu, Fe, Mn, Rb, and Zn were relatively abundant (median, 10-58 μg g); and Ba, Mo, Ni, Pb, and Sr showed large variations (median, 0.4, 0.3, 3, 0.1, and 0.5 μg g, respectively). Median concentrations of detected elements were similar in asparagus collected in uncontaminated environments or previously mined areas. An exception was Cd in asparagus collected in mined areas (median, 1.4 μg g), whose levels were much higher than in asparagus from uncontaminated environments (median, 0.01 μg g), indicating that high Cd in bedrocks affect contents in asparagus shoots. Also, Sb- and As-rich substrates in mined areas resulted in asparagus with Sb and As concentrations much higher than asparagus samples from areas mined predominantly for Pb and Zn. Results of this study indicate potential health hazards to residents living worldwide in areas affected by past mining.

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Assessment of environmental hazards at abandoned mining sites: A case study in Sardinia, Italy

Cited by 32 publications

References 21 publications

Characterisation Leaching Tests and Associated Geochemical Speciation Modelling to Assess Long Term Release Behaviour from Extractive Wastes

Characterisation Leaching Tests and Associated Geochemical Speciation Modelling to Assess Long Term Release Behaviour from Extractive Wastes

Field sampling of soil pore water to evaluate the mobile fraction of trace elements in the Iglesiente area (SW Sardinia, Italy)

Metals and Metalloids in Wild Asparagus at Uncontaminated and Mining‐Contaminated Sites

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