Growth of selected plant species in biosolids-amended mine tailings

Alcantara, Hannah Joy P.; Doronila, Augustine; Nicolas, Marc E.; Ebbs, Stephen D.; Kolev, Spas D.

doi:10.1016/j.mineng.2015.06.012

Cited by 30 publications

(12 citation statements)

References 50 publications

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“…Such as biosolids were used to reestablish and sustain vegetation at mine sites (Tian et al, 2006;Alcantara et al, 2015). Organic acids may influence Pb solubility and absorption directly through acidification, complexation and oxidation-reduction reactions in the plant rhizosphere.…”

Section: Discussionmentioning

confidence: 99%

Citric acid and EDTA on the growth, photosynthetic properties and heavy metal accumulation of Iris halophila Pall. cultivated in Pb mine tailings

Han

Zhang

et al. 2018

International Biodeterioration & Biodegradation

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Section: Discussionmentioning

confidence: 99%

Citric acid and EDTA on the growth, photosynthetic properties and heavy metal accumulation of Iris halophila Pall. cultivated in Pb mine tailings

Han

Zhang

et al. 2018

International Biodeterioration & Biodegradation

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“…Mine tailings are hazardous wastes generated from ore extraction (Alcantara et al 2015;Li et al 2014;Monterroso et al 2014;Pascaud et al 2015). Long-term accumulated tailing wastes exposed to soil surface will naturally introduce masses of colloidal particles into surrounding soil under water erosion in many cases (Lower et al 2004;Slowey et al 2007;Slowey Responsible editor: Zhihong Xu et al 2005).…”

Section: Introductionmentioning

confidence: 99%

Mobilization and transport of metal-rich colloidal particles from mine tailings into soil under transient chemical and physical conditions

et al. 2016

Environ Sci Pollut Res

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Exposed mine tailing wastes with considerable heavy metals can release hazardous colloidal particles into soil under transient chemical and physical conditions. Two-layered packed columns with tailings above and soils below were established to investigate mobilization and transport of colloidal particles from metal-rich mine tailings into soil under transient infiltration ionic strength (IS: 100, 20, 2 mM) and flow rate (FR: 20.7, 41, and 62.3 mm h(-1)), with Cu and Pb as representatives of the heavy metals. Results show that the tailing particles within the colloidal size (below 2 μm) were released from the columns. A step-decrease in infiltration IS and FR enhanced, whereas a step-increase in the IS and FR restrained the release of tailing particles from the column. The effects of step-changing FR were unexpected due to the small size of the released tailing particles (220-342 nm, being not sensitive to hydrodynamic shear force), the diffusion-controlled particle release process and the relatively compact pore structure. The tailing particles present in the solution with tested IS were found negatively charged and more stable than soil particles, which provides favorable conditions for tailing particles to be transported over a long distance in the soil. The mobilization and transport of Cu and Pb from the tailings into soil were mediated by the tailing particles. Therefore, the inherent toxic tailing particles could be considerably introduced into soil under certain conditions (IS reduction or FR decrease), which may result in serious environmental pollution.

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“…Deep root system makes Smuts Finger grass extremely drought tolerant (Lindh et al, 2014). The root penetration is mainly vertical and grows up to 2 m deep depending on the soil conditions (Alcantara et al, 2015). Based on these characteristics Smuts Finger grass is being used in a range of disturbed areas.…”

mentioning

confidence: 99%

Smuts finger grass (<i>Digitaria eriantha</i> Cv Irene) root growth assessment and some physicochemical characteristics on coal mined land compacted soil

Mosebi¹,

Truter²,

Madakadze³

2018

Journal of Applied Sciences and Environmental Management

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The coal mine soil layers contained high values of bulk density of 1.80gcm -3 and 1.90gcm -3 at depths of 0-20 and 20-40 cm respectively, low contents of organic matter, soil pH and soil nutrients concentration. A field trial was conducted to investigate root growth responses of Smuts Finger grass (Digitaria eriantha cv Irene) to compacted mine soil layers. It was revealed that the greatest root masses were noted in the upper horizons with progressively significantly less in the deeper horizons. Roots of this species penetrated compacted soil layers and decreased soil bulk density. The highest soil pH values were found in the upper layers with greatest root biomass. Soil nutrients (P, Mg, Ca, Na and K) status was also better in the upper layers. Smuts Finger grass could be used as an alternative method for rehabilitation of compacted mine soil layers.

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Growth of selected plant species in biosolids-amended mine tailings

Cited by 30 publications

References 50 publications

Citric acid and EDTA on the growth, photosynthetic properties and heavy metal accumulation of Iris halophila Pall. cultivated in Pb mine tailings

Citric acid and EDTA on the growth, photosynthetic properties and heavy metal accumulation of Iris halophila Pall. cultivated in Pb mine tailings

Mobilization and transport of metal-rich colloidal particles from mine tailings into soil under transient chemical and physical conditions

Smuts finger grass (<i>Digitaria eriantha</i> Cv Irene) root growth assessment and some physicochemical characteristics on coal mined land compacted soil

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