A Holistic Approach for Mine Spoil Restoration

Singh, Rajesh; ma, See; Lakhran, Hansa

doi:10.20546/ijcmas.2017.606.069

Cited by 24 publications

(29 citation statements)

References 5 publications

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“…In this context, drought resistant, fast growing species are chosen which readily produce decomposable nutrient rich litter for soil (Madejon et al, 2006). Turnover of their fine roots as well as nodules also have dramatic effect on soil fertility (Singh et al, 2002). The amount of nitrogen (N) fixed by a legume can be calculated by multiplying its biomass by a factor of 0.8 (Thomas et al, 1997) whereas approximately 13 -682 kg N ha -1 yr -1 can be fixed in a legume-grass plantation.…”

Section: Role Of Grasses and Legumesmentioning

confidence: 99%

Revegetation of Fly Ash ‒ A Review With Emphasis on Grass-Legume Plantation and Bioaccumulation of Metals

Maiti¹

2016

Appl Ecol Env Res

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Abstract. Uninterrupted generation of fly ash by the coal based thermal power plants and its dumping has lead to steady encroachment of useful land in India. The deleterious effects of fly ash on the nearby environment are inevitable due to its fine texture and presence of toxic metals. Thus, proper revegetation programme of the sites are highly desirable due to their continuance in being the part of landscape. This paper conglomerates all the issues which should be taken into account to prevent groundwater contamination and increase phytostabilization of metals. An insight to the past and the prevailing restoration scenario will help in selecting of plant species for biomass production. Primarily, an integrated approach towards revegetation is necessary which comprises native and exotic grass-legume species, readily available composts, green manure, and mulches. The paucity of studies in relation to the long term changes in fly ash due to vegetation is to be permeated through regular analysis of substrate nutrient status, extent of nutrient loss, bioavailable toxic metals, in restoration sites. The range of methodologies and indexes discussed here will benefit the future management approaches of fly ash with emphasis on phytoremediation of trace metals, development of aesthetically pleasant landscape and productivity.

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Section: Role Of Grasses and Legumesmentioning

confidence: 99%

Revegetation of Fly Ash ‒ A Review With Emphasis on Grass-Legume Plantation and Bioaccumulation of Metals

Maiti¹

2016

Appl Ecol Env Res

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“…Moreover, natural recovery in mine spoils is a slow process (Singh et al 1995). A successful restoration programme attempts to accelerate the natural recovery processes to check the soil erosion, to restore the soil fertility and to enhance the biological diversity (Singh et al 2002). The first step in any restoration programme, of course, is to protect the disturbed habitat and communities from being further wasted.…”

Section: Introductionmentioning

confidence: 99%

Spoil characteristics under five years old native woody plantations and unplanted dump in dry tropical environment, India.

Singh

2017

Ann.Pl.Sci.

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Present study was conducted to investigate spoil characteristics under 5-yr old high-density plantations of three native trees (Albizia lebbeck A. procera and Tectona grandis) and one fast growing woody grass (Dendrocalamus strictus) species on coal mine spoils and same age unplanted mine spoil dump at the same area. We examined physical characters such as soil bulk density, water holding capacity, soil texture (sand, clay and silt) and chemical characters such as pH, total nutrients (C, N and P) and exchangeable cations (Ca, Mg, K and Na) in chronosequence of spoil depth (0-50 cm) at 10 cm interval under planted stand of each selected species and unplanted dump. A significant effect of plantations on physico-chemical characteristics (except soil bulk density) of mine spoils was found. Among species, A. lebbeck exhibited substantial improvement in mine spoil soils followed by D. strictus, A. procera and T. grandis plantation. Although, chemical characteristics especially total concentrations of soil C, N and P and their ratios were significantly different due to species and spoil depth, indicating plantations of all species have abilities to improve soil chemical qualities at young stage of establishment. Compared to unplanted dump, plantation of A. lebbeck showed highest concentrations of total nutrients (C, N and P) and exchangeable cations with respect to spoil depth followed by D. strictus, A. procera and T. grandis, which confirms that some species have suitable qualities for the modification of spoil characteristics during rehabilitation process.

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“…There is a stern threat to the existing ecosystem due to mining operations mainly due to opencast mining where huge amount of waste rock or overburden material is produced and dumped on site for a long period. These OB dumps are quite adverse for growth of vegetation due to lack of valuable nutrients 3 .…”

Section: Introductionmentioning

confidence: 99%

Augmenting the Stability of OB Dump by Using Fly Ash: A Geo Technical Approach to Sustainably Manage OB Dump at Jharia Coalfield, India

Gupta

Paul

2016

Curr. World Environ

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This paper is mainly focused over the possible utilization of fly ash along with OB dump to enhance the stability of OB dump and thus provide a sustainable approach for better waste management of both these materials simultaneously. Instability of coal mine overburden (OB) dumps is an important problem in most of the coal mines like Jharia coalfields in India. This is mainly occurring due to sliding nature of the rock material, lack of vegetation etc. Numbers of Environmental and health issues are associated with these unstable OB dumps. As it may easily flow with running water can contaminate the nearby water resource as well as carbonaceous content of the dump causes air pollution due to simultaneous combustion. On the other hand management of coal ash that is produced from thermal plants is also an important task. Dumping of fly ash in open may cause number of environmental problems. Various geotechnical and physical parameters such as particle size analysis, specific gravity, density, and friction angle/cohesion test have been performed to check the stability of OB dump and to analyze impacts of fly ash utilization to stabilize the OB dump.

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A Holistic Approach for Mine Spoil Restoration

Cited by 24 publications

References 5 publications

Revegetation of Fly Ash ‒ A Review With Emphasis on Grass-Legume Plantation and Bioaccumulation of Metals

Revegetation of Fly Ash ‒ A Review With Emphasis on Grass-Legume Plantation and Bioaccumulation of Metals

Spoil characteristics under five years old native woody plantations and unplanted dump in dry tropical environment, India.

Augmenting the Stability of OB Dump by Using Fly Ash: A Geo Technical Approach to Sustainably Manage OB Dump at Jharia Coalfield, India

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