Distinguishing reclamation, revegetation and phytoremediation, and the importance of geochemical processes in the reclamation of sulfidic mine tailings: A review

Xie, Lan; Zyl, Dirk van

doi:10.1016/j.chemosphere.2020.126446

Cited by 85 publications

(31 citation statements)

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“…However, in areas with acute water shortages like Northwest China, revegetation depends profoundly on artificial irrigation, since groundwater is usually inaccessible in that region (Gao et al, 2016). In practice, covering soil, and/or inorganic and organic amendments are normally applied to support the revegetation in such degraded land (Roy et al, 2022(Roy et al, , 2021b(Roy et al, , 2021dXie and van Zyl, 2020).…”

Section: Introductionmentioning

confidence: 99%

Cattle manure compost and biochar supplementation improve growth of Onobrychis viciifolia in coal-mined spoils under water stress conditions

Roy

Núñez‐Delgado

Kader

et al. 2022

Environmental Research

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Surface mining is a critical anthropogenic activity that significantly alters the ecosystem, while the use of appropriate revegetation techniques can be considered an important and feasible strategy in the way to improve the ecosystem services of degraded land. In the present study, we carried out a pot experiment to investigate the effects of three different variables on morpho-physiological and biochemical parameters of Onobrychis viciifolia to assess the capability of this species to be used for restoration purposes. Specifically, the variables studied were: (a) water (W) regime, working at five values as regards field capacity (FC) (i.e., 80% FC = highest, 72% FC = high, 60% FC = moderate, 48% FC = low, and 40% FC = very-low dose); and (b) rates of cattle manure compost (CMC) and wood biochar (BC) (weight/weight ratio), working at five rates (i.e., 4.0% = highest, 3.2% = high, 2.0% = moderate, 0.8% = low, and 0% = either no-CMC or no-BC dose). In addition, soil physical-chemical properties and enzyme activities were also investigated at the end of the experimental period. It was found that morphological growth attributes such as plant height, maximum root length, and dry biomass significantly increased with W, CMC and BC applications. Compared to control, moderate-to-high W, CMC and BC doses (W 80 CMC 2 BC 2 ) increased net photosynthesis rate (by 42%), stomatal conductance (by 50%), transpiration rate (by 29%), water use efficiency (by 10%), chlorophyll contents (by 73%), carotenoid content (by 81%), leaf relative water content (by 33%) and leaf membrane stability index (by 30%). Under low-W content, the application of CMC and BC enhanced osmotic adjustments by increasing the content of soluble sugar and the activities of superoxide dismutase, catalase, peroxidase and ascorbate peroxidase, decreasing the oxidative stress, as verified by low levels of hydrogen peroxide, superoxide anion, malondialdehyde and proline contents in leaf tissues. Moreover, application of W, CMC and BC significantly improved soil water holding capacity, available nitrogen, phosphorus and potassium, urease and catalase activities, which facilitate plant growth. These results would aid in designing an appropriate strategy for achieving a successful revegetation of O. viciifolia, providing optimum doses of W (64% field capacity), CMC (2.4%) and BC (1.7%), with the final aim of reaching ecological restoration in arid degraded lands.

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Section: Introductionmentioning

confidence: 99%

Cattle manure compost and biochar supplementation improve growth of Onobrychis viciifolia in coal-mined spoils under water stress conditions

Roy

Núñez‐Delgado

Kader

et al. 2022

Environmental Research

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“…Bioconversion in the different parts of the plant, especially leaves, can release metals into the atmosphere in gas forms [19]. The pollutants that are absorbed in roots, transported through the xylem, and are released to the atmosphere is less toxic and volatile compound, as a result form modification from plant metabolism [22][23][24]. According to a review by Laghlimi et al, (2015), there are advantages and disadvantages for this mechanism [21] (see table 2.).…”

Section: Phytovolatilizationmentioning

confidence: 99%

Comparison of different phytoremediation strategies for acid mine drainage (AMD)

Rahman

Wintoko

Prasetya

2022

IOP Conf. Ser.: Earth Environ. Sci.

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Acid Mine Drainage (AMD) is a severe environmental problem that results from mining industry activities around the world. Water pollution from acid mine drainage not only damages the quality of water and soil but also affects a sustainable environment such as plants and animals in a mining area. Mining water typically has acid with highly toxic heavy metal concentrations. Remediation is one of the technologies that can be used to reduce heavy metal pollutant water from mine drainage water. There were many researches about remediation in the past, but phytoremediation has attracted various researchers’ attention. Phytoremediation is a remediation pollutants method using a plant as a media that has the advantages of being efficient, economical, and eco-friendly. The most significant important aspect for the successful phytoremediation method is a selection of the plant species. Aquatic plants have a high level of efficiency in reducing organic and inorganic pollutants in water. The efficiency of aquatic plants can be improved with innovative approaches. This review focuses on the comparison characteristic of aquatic plants in the phytoremediation method to reduce heavy metals in pollutant water. Comparison served to support innovations to improve efficiency phytoremediation application research challenge for acid mine drainage issues in the near future.

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“…Reclaiming contaminated soil through plants is a practice that intends to improve the quality of both the soil and the plant cover, which may mitigate the harmful effects of pollutants, by reducing their mobility and bioavailability or by improving their degradation (Nejad et al, 2017;Wyszkowska et al, 2019;Xie andVan Zyl, 2020: Rai et al, 2021). Furthermore, the use of industrial or urban organic wastes as soil conditioners is considered one of the most effective and inexpensive operations to improve biochemical properties of soils contaminated by trace metals (Burgos et al, 2010;Asemaninejad et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Atmospheric emissions of volatile organic compounds from a mine soil treated with sewage sludge and tomato plants (Lycopersicum esculentum L.)

Fernández-Espinosa

Peña-Heras

Oliva

2022

Preprint

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Aims. The study investigated the emissions of volatile organic compounds (VOCs) from a mining soil amended with sewage sludge and irrigated with wastewater with or without tomato plants. The aim is to find out whether amendment and irrigation change VOC emissions from the soil and whether tomato changes emissions compared to uncultivated soil.Methods. Soil and plant experiments were done in assembled pots. All pots were placed inside a closed glass chamber inside an isolated and windowless room. Experiments with soil without plants were done independently from experiments with soil and plants. An aspirating pump coupled with Tenax adsorbent tubes was used for sampling of VOCs emitted from pots. Volatile organic compounds trapped in the tubes were quantified by gas chromatography-mass spectrometry detection.Results. The study detected a total of nine VOCs emitted from the polluted soil: benzene, toluene, ethylbenzene, p-xylene, m-xylene, o-xylene, styrene, benzene-1,2,4-trimethyl and tetrachloroethylene, among which the most abundant were toluene, m-xylene and styrene. Differences between pots with or without amendments (C and A pots) showed a general tendency to a decline of VOCs emissions in the mining soil amended with sewage sludge. Plants contributed to increase significantly the emissions of all VOCs in both A and C- pots.Conclusion. The soil amended with sewage sludge reduced the emission of VOCs: styrene in pots without plants and benzene and xylenes in pots with plants. Tomato plants contributed to increase significantly the emissions of all VOCs except styrene in both amended and non-amended soils.

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Distinguishing reclamation, revegetation and phytoremediation, and the importance of geochemical processes in the reclamation of sulfidic mine tailings: A review

Cited by 85 publications

References 84 publications

Cattle manure compost and biochar supplementation improve growth of Onobrychis viciifolia in coal-mined spoils under water stress conditions

Cattle manure compost and biochar supplementation improve growth of Onobrychis viciifolia in coal-mined spoils under water stress conditions

Comparison of different phytoremediation strategies for acid mine drainage (AMD)

Atmospheric emissions of volatile organic compounds from a mine soil treated with sewage sludge and tomato plants (Lycopersicum esculentum L.)

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