Properties of soil materials derived from fly ash 11 years after revegetation of post-mining excavation

Weber, Jerzy; Straczynska, S; Kocowicz, Andrzej; Gilewska, M.; Bogacz, Adam; Gwiżdż, Marta; Dębicka, Magdalena

doi:10.1016/j.catena.2015.05.016

Cited by 44 publications

(33 citation statements)

References 33 publications

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“…Generally, unweathering fly ash showed sandy structure (56.0-82.0%, Weber et al, 2015;97.1%, Gajić et al, 2016;Kostić et al, 2018) with small amounts of colloidal particles (1.8%, Gajić et al, 2016;Kostić et al, 2018) and low percentage of hydroscopic water (0.54%, Gajić et al, 2016) that results in great water permeability and weak aggregation indicating adverse physical conditions for plant growth (Weber et al, 2015;Kostić et al, 2018) (Table 1). Furthermore, high values of electrical conductivity (EC) (150 µS/cm, 0.352 dS/m, Gajić et al, 2016;Kostić et al, 2018) (Table 1) indicate a large amount of soluble salts whereas pH values can vary from 4.5 to 12 depending on coal type (Carlson and Adriano, 1993;Bilski et al, 1995).…”

Section: Limiting Factors For Plant Growth On Fly Ash and Mine Waste mentioning

confidence: 99%

Ecological Potential of Plants for Phytoremediation and Ecorestoration of Fly Ash Deposits and Mine Wastes

Gajić

Djurdjević

Kostić

et al. 2018

Front. Environ. Sci.

130

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Fly ash generates as the result of coal combustion in thermoelectric power stations whereas ore mining activities produce mine waste-rock and tailings worldwide. High concentrations of metal(loid)s and organic pollutants in fly ash and mine wastes are released into soil, air, and water presenting a global threat to the surrounding environment and human health. The environmentally sound management of fly ash and mine wasterock and tailings includes monitoring stability of the dam construction and seepage flowrate, prevention of water erosion and dust spreading, reducing the footprint of the management facilities and successful restoration/revegetation. Harsh conditions prevailing on fly ash and mine deposits are unfavorable mechanical composition and pH, high concentrations of soluble salts, lack of nitrogen and phosphorous, reduced number of microorganisms and fungus, toxic concentrations of As, Au, Ag, B, Cu, Cd, Cr, Hg, Mn, Mo, Ni, Pb, Zn, and the presence of PAHs and PCBs. The review addresses phystostabilization, phytoextraction, rhizodegradation, and phytodegradation as main phytoremediation green technologies which use plants to clean up the contaminated area to safe levels. Establishment of the self-sustaining vegetative cover on fly ash and mine deposits is crucial for recovering ecosystem health, stability, and resilience. Therefore, here we have discussed the essential role of native plants in the ecorestoration process on waste deposits. Additional emphasis is given to the evaluation of plant adaptive response to pollution stress. This review presents a current knowledge in phytomanagement of fly ash deposits, mine waste-rock and tailings. Also, it provides a new frontier in restoration physiology where physiological and biochemical tools can be used to predict plant response to stressors and success of restoration projects.

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Section: Limiting Factors For Plant Growth On Fly Ash and Mine Waste mentioning

confidence: 99%

Ecological Potential of Plants for Phytoremediation and Ecorestoration of Fly Ash Deposits and Mine Wastes

Gajić

Djurdjević

Kostić

et al. 2018

Front. Environ. Sci.

130

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“…Soil parameters are the main environmental factors affecting vegetation, and heavy‐metal pollution in the soil seriously interferes with the normal natural‐succession process (Chen, Han, Duan, Korpelainen, & Li, ; Weber et al, ; Żołnierz, Weber, Gilewska, Strączyńska, & Pruchniewicz, ). In this study, Mn was considered as the greatest influence factor.…”

Section: Discussionmentioning

confidence: 99%

“…To conclude, Mn could be considered the most important soil parameter affecting vegetation diversity in the marginal area. with the normal natural-succession process (Chen, Han, Duan, Korpelainen, & Li, 2017;Weber et al, 2015;Żołnierz, Weber, Gilewska, Strączyńska, & Pruchniewicz, 2016). In this study, Mn was considered as the greatest influence factor.…”

Section: Relationship Between Vegetation Characteristics and Soil Pmentioning

confidence: 99%

Selection of suitable species as a key factor for vegetation restoration of degraded areas in an open‐pit manganese‐ore mine in Southern China using multivariate‐analysis methods

et al. 2019

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Open‐pit mining results in large amounts of degraded lands that require ecological recovery. Adequate‐species selection for ecological recovery is of great importance. In this study, field investigations along the disturbance gradients (marginal area, restoration area, and control area) in a manganese ore deposit of Guangxi in Southern China were carried out. We screened the adequate species from two aspects. In the marginal area, the result of corrected Akaike information criterion revealed that Mn was the most important soil parameter affecting vegetation diversity. Cyclosorus parasiticus (L.) Farwell., Setaria viridis (L.) Beauv., Mimosa sepiaria Benth., and Bidens pilosa L. were selected for their abilities to adapt to high‐Mn‐content soils. In the restoration area and control area, we combined important values and field performance (Dickson quality index, DQI) of species to select adequate species. Miscanthus sinensis Anderss. and Arundinella hirta (Thunb.) Tanaka were selected using the similar DQI (p > 0.05) in both areas. In summary, C. parasiticus (L.) Farwell., S. viridis (L.) Beauv., M. sinensis Anderss., and A. hirta (Thunb.) Tanaka were selected as adequate species because of their high potential to adapt to these disturbed sites. Our results and methodology could have a demonstrating effect for restoration programmes in manganese ore mining areas of China.

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“…Because the particle size of FA was small, the capillary force and molecular force was strong for FA, which increased the water-holding capacity of FA, and created a barrier for water infiltration from the surface soil. Some researchers also found that the application of FA led to an improvement in physical properties; these effects contributed to increases in useful water retention and the amount of water available for plants (Weber et al, 2015). The volumetric water content below FIGURE 10 Changes in the speed of capillary rise with time 50 cm depth was markedly higher than that at the top depth, indicating that the water absorption and water-holding capacities of FA were significantly higher than those of soil, consistent with the measured result of higher saturated water content of FA than that of soil.…”

Section: Mechanism Of the Effect Of Fa And Cg On The Water Content mentioning

confidence: 99%

The effects of coal gangue and fly ash on the hydraulic properties and water content distribution in reconstructed soil profiles of coal‐mined land with a high groundwater table

Wang

Bai

et al. 2016

Hydrological Processes

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Soil water systems have been severely degraded in coal‐mined and subsiding land, where a shallow groundwater table is also present. The present paper discussed the effects of fly ash (FA) and coal gangue (CG) as filling materials on the hydraulic properties and water content distribution in a profile for the purpose of rehabilitating subsided lands. The saturated water content, water characteristic curve, and water diffusivity of local soil, FA, CG, and a mixture of FA and CG (“mixed filling”) were characterized. A column experiment was conducted to investigate the changes of water content in profiles reconstructed from the combination of soil and filling materials, including soil only, FA, CG, and a mixture of FA and CG, which were used to fill the lower part of the reconstructed profile. The mixture of FA and CG was found to possess similar hydraulic properties to those of the soil, particularly high water‐holding capacity and permeability. Moreover, the volumetric water contents in the whole profile containing the mixture of FA and CG were consistent with those of the profile reconstructed with soil only. As a result, it is recommended to adopt the mixture of FA and CG for reconstructing the lower profile of the land to alleviate or rehabilitate subsided land in coal mines.

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Properties of soil materials derived from fly ash 11 years after revegetation of post-mining excavation

Cited by 44 publications

References 33 publications

Ecological Potential of Plants for Phytoremediation and Ecorestoration of Fly Ash Deposits and Mine Wastes

Ecological Potential of Plants for Phytoremediation and Ecorestoration of Fly Ash Deposits and Mine Wastes

Selection of suitable species as a key factor for vegetation restoration of degraded areas in an open‐pit manganese‐ore mine in Southern China using multivariate‐analysis methods

The effects of coal gangue and fly ash on the hydraulic properties and water content distribution in reconstructed soil profiles of coal‐mined land with a high groundwater table

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