Evaluation of the suitability of three Mediterranean shrub species for phytostabilization of pyritic mine soils

Parra, Antonio; Zornoza, Raúl; Conesa, E.; Gómez-López, María Dolores; Faz, Ángel

doi:10.1016/j.catena.2015.07.018

Cited by 39 publications

(20 citation statements)

References 40 publications

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“…It was found in this work that pulp addition increased the moisture, organic matter content and pH of the soil, while Na-bentonite increased the water content and pH. These results were quite similar to those obtained using compost, leonardite and manure [15,37,38]. On the other hand, they are not in full agreement with results reported by Cheng and Hseu [39] and Hattab-Hambli at al.…”

Section: Discussionsupporting

confidence: 68%

Effects of Pulp and Na-Bentonite Amendments on the Mobility of Trace Elements, Soil Enzymes Activity and Microbial Parameters under Ex Situ Aided Phytostabilization

Wasilkowski¹,

Nowak²,

Płaza³

et al. 2017

PLoS ONE

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The objective of this study was to explore the potential use of pulp (by-product) from coffee processing and Na-bentonite (commercial product) for minimizing the environmental risk of Zn, Pb and Cd in soil collected from a former mine and zinc-lead smelter. The effects of soil amendments on the physicochemical properties of soil, the structural and functional diversity of the soil microbiome as well as soil enzymes were investigated. Moreover, biomass of Festuca arundinacea Schreb. (cultivar Asterix) and the uptake of trace elements in plant tissues were studied. The outdoor pot set contained the following soils: control soil (initial), untreated soil (without additives) with grass cultivation and soils treated (with additives) with and without plant development. All of the selected parameters were measured at the beginning of the experiment (t0), after 2 months of chemical stabilization (t2) and at the end of the aided phytostabilization process (t14). The obtained results indicated that both amendments efficiently immobilized the bioavailable fractions of Zn (87–91%) and Cd (70–83%) at t14; however, they were characterized by a lower ability to bind Pb (33–50%). Pulp and Na-bentonite drastically increased the activity of dehydrogenase (70- and 12-fold, respectively) at t14, while the activities of urease, acid and alkaline phosphatases differed significantly depending on the type of material that was added into the soil. Generally, the activities of these enzymes increased; however, the increase was greater for pulp (3.5-6-fold) than for the Na-bentonite treatment (1.3–2.2-fold) as compared to the control. Soil additives significantly influenced the composition and dynamics of the soil microbial biomass over the experiment. At the end, the contribution of microbial groups could be ordered as follows: gram negative bacteria, fungi, gram positive bacteria, actinomycetes regardless of the type of soil enrichment. Conversely, the shift in the functional diversity of the microorganisms in the treated soils mainly resulted from plant cultivation. Meanwhile, the highest biomass of plants at t14 was collected from the soil with Na-bentonite (6.7 g dw-1), while it was much lower in a case of pulp treatment (1.43–1.57 g dw-1). Moreover, the measurements of the heavy metal concentrations in the plant roots and shoots clearly indicated that the plants mainly accumulated metals in the roots but that the accumulation of individual metals depended on the soil additives. The efficiency of the accumulation of Pb, Cd and Zn by the roots was determined to be 124, 100 and 26% higher in the soil that was enriched with Na-bentonite in comparison with the soil that was amended with pulp, respectively. The values of the soil indices (soil fertility, soil quality and soil alteration) confirmed the better improvement of soil functioning after its enrichment with the pulp than in the presence of Na-bentonite.

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Section: Discussionsupporting

confidence: 68%

Effects of Pulp and Na-Bentonite Amendments on the Mobility of Trace Elements, Soil Enzymes Activity and Microbial Parameters under Ex Situ Aided Phytostabilization

Wasilkowski¹,

Nowak²,

Płaza³

et al. 2017

PLoS ONE

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“…PL sería la especie óptima para fitoestabilización por acumular Pb en sus raíces pero no transferirlo a la parte comestible, contribuyendo a la inmovilización de los metales en el suelo [31] [32].…”

Section: Suelo Forestalunclassified

Transferencia y acumulación de metales y metaloides tanto en lechuga como en plantas silvestres en suelos afectados por la minería metálica

Carlos¹,

Martínez²,

Belmonte³

et al. 2019

Congreso Ibérico De Agroingeniería

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“…Dada la fisiografía del margen este del Valle Central de Chile, la dirección del viento, cuya velocidad oscila 1,6 m s -1 y 3,3 m s -1 , procede del sur de los tranques de relaves en dirección norte hacia la comuna de Rancagua. Desde el cese de las operaciones en el relave Cauquenes se han llevado a cabo 4 campañas de fitoestabilización en los años 1979, 2005, 2010 y 2015 en las parcelas F79, F05, F10 y F15, respectivamente, las cuales se trataron al inicio una única vez con un polímero que habilitó los suelos para fines agrícolas y forestales (Parra et al, 2016) formado por una mezcla de 14 Tm de cal apagada [Ca(OH) 2 ], 1,4 Tm salitre potásico [KNO 3 ] y 0,6 Tm superfosfato triple [P 2 O 5 ] por hectárea, cubriendo un área total de 22,34 ha de sustrato. Además, se implantaron diferentes especies arbóreas como Acacias, Cupressus, Eucalyptus, Quillaja, Cryptocaria, entre otras (Lobos y Silva, 1990;Malhue, 2015).…”

Section: áRea De Estudiounclassified

“…En los últimos años en Chile, se han llevado a cabo algunos estudios sobre el uso de distintas especies nativas enmarcadas en la tecnología de fitoestabilización (Parra et al, 2016;Orchard et al, 2009) y otros que determinan la capacidad de fitoextracción de distintas especies en suelos con altas concentraciones de metales tóxicos (Tapia et al, 2011;. La meteorización de los tranques de relaves de minerales sulfurados ha derivado con frecuencia en problemas de acidificación que inhiben el crecimiento de las plantas y proporciona material particulado susceptible de ser removilizado por el viento y el agua (Valentín-Vargas et al, 2018).…”

Section: Introductionunclassified

Efecto de la reforestación sobre las propiedades edáficas del tranque de relaves Cauquenes, mina El Teniente, Región del Libertador Bernardo O ́higgins-Chile

Rodríguez-Oroz

Maturana

Malhue³

et al. 2019

agrosur

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Phytostabilisation involves the simultaneous use of exclusive metalophilic plants and substrate conditioners to achieve the physical, chemical, and biological stabilisation of degraded soil. This work is based on a comparative study of four phytostabilisation campaigns with Acacias, Cupressus, Eucalyptus, Quillaja, and Cryptocaria among others, and one target area, both located in the Cauquenes tailings dam, 12 km far from the city of Rancagua. The study evaluated the effectiveness of phytostabilisation as a remediation technique through the monitoring of substrate physicochemical variables using comparative analysis of their space-time distributions, considering an initial incorporation of lime. The studied properties were the organic matter content (OM), nitrogen (N), phosphorus (P), potassium (K), pH, electrical conductivity (EC), humidity, texture and heavy metals concentration (Cr, Ni, Cu, Zn, As, Pb, Cd). Non-metric multidimensional scaling (NMDS) and statistical analysis showed that edaphic properties improved over time. This improvement was observed as an increase in the clay percentage, the contents of OM and N, K, P and a decrease in acidity after years of phytostabilisation. The concentration of heavy metals showed a time decrease for Cu, Cr, Ni, Pb, and As attributed to phytoextraction processes. Results showed that phytostabilization is an effective technique that leads to the physical and chemical stabilisation of the Cauquenes tailings dam, which is observed through the improvement of edaphic properties and decrease of the risk of pollutant dispersion, and it can be applied in other places.

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Evaluation of the suitability of three Mediterranean shrub species for phytostabilization of pyritic mine soils

Cited by 39 publications

References 40 publications

Effects of Pulp and Na-Bentonite Amendments on the Mobility of Trace Elements, Soil Enzymes Activity and Microbial Parameters under Ex Situ Aided Phytostabilization

Effects of Pulp and Na-Bentonite Amendments on the Mobility of Trace Elements, Soil Enzymes Activity and Microbial Parameters under Ex Situ Aided Phytostabilization

Transferencia y acumulación de metales y metaloides tanto en lechuga como en plantas silvestres en suelos afectados por la minería metálica

Efecto de la reforestación sobre las propiedades edáficas del tranque de relaves Cauquenes, mina El Teniente, Región del Libertador Bernardo O ́higgins-Chile

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