A greenhouse trial to investigate the ameliorative properties of biosolids and plants on physicochemical conditions of iron ore tailings: Implications for an iron ore mine site remediation

Cele, Emmanuel Nkosinathi; Maboeta, Mark

doi:10.1016/j.jenvman.2015.09.029

Cited by 36 publications

(13 citation statements)

References 68 publications

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“…In the previous study (Cele and Maboeta 2016), the influence of biosolids on soil physicochemical status was studied. The current study investigates the influence of biosolids on soil enzyme activities; however, since enzymes are studied on soils from the previous study, some methods and data from the previous study are shown in the current study in order to demonstrate relationship between biosolids, soil physicochemical status and soil enzymes.…”

Section: Methodsmentioning

confidence: 99%

Response of soil enzyme activities to synergistic effects of biosolids and plants in iron ore mine soils

Cele

Maboeta

2016

Int. J. Environ. Sci. Technol.

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Past mining activities in Swaziland have left a legacy of abandoned mine sites (iron ore, asbestos, diamond and coal mine dumps), all of which have not been reclaimed. These sites were recently (2013) considered by the country's wastewater treatment authorities as suitable places where biosolids can be applied, firstly as a biosolids disposal alternative and, secondly, as a strategy to accelerate mine soil remediation through phytostabilization. In order to understand the effects that this might have on mine soil conditions and microbiota, two (2) plant growth trials were conducted in biosolid-treated iron mine soils and one (1) trial on undisturbed soil, under greenhouse conditions, for twelve (12) weeks. According to the results obtained, the combination of biosolids and plants led to significant improvements (p \ 0.05) in parameters related to soil fertility. Significant increases (p \ 0.05) in alkaline phosphatase, b-glucosidase and urease soil enzyme activities were also observed. Copper and zinc were significantly (p \ 0.05) increased (Cu from 17.00-50.13 mg kg ); however, these sludge-derived metals did not affect enzyme activities. Improvements in soil physicochemical conditions, organic matter-metal complexes, effects of plants on metals and the essentiality of Cu and Zn to soil enzymes were thought to have masked the effects of metals. Increases in soil enzyme activities were considered to be indicative of improvements in the quality, fertility health and self-purification capacity of iron mine soils due to synergistic effects of biosolids and plants.

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Section: Methodsmentioning

confidence: 99%

Response of soil enzyme activities to synergistic effects of biosolids and plants in iron ore mine soils

Cele

Maboeta

2016

Int. J. Environ. Sci. Technol.

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“…Biosolids, treated and stabilized solid organic residual by-products, generally contain heavy metal(-loid)s, although advances in the sewage and wastewater treatment technologies are successfully reducing heavy metal(loid)s level in biosolids. Several studies have reported the negative effect of biosolid application as a source of heavy metal(loid)s contamination in the soil (Cele and Maboeta, 2016); however, some studies have reported the advantageous impact of organic amendments as adsorbent for stabilization of heavy metal(loid)s in the soil (Venegas et al, 2015;Shakoor et al, 2015).…”

Section: Immobilization Techniquesmentioning

confidence: 99%

A comparison of technologies for remediation of heavy metal contaminated soils

Khalid

Shahid

Niazi

et al. 2017

Journal of Geochemical Exploration

1,057

349

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, et al.. A comparison of technologies for remediation of heavy metal contaminated soils. Journal of Geochemical Exploration, Elsevier, 2016Elsevier, , 182, pp.247 -268. 10.1016Elsevier, /j.gexplo.2016 Any correspondence concerning this service should be sent to the repository administrator: staff-oatao@listes-diff.inp-toulouse.fr a b s t r a c tSoil contamination with persistent and potentially (eco)toxic heavy metal(loid)s is ubiquitous around the globe. Concentration of these heavy metal(loid)s in soil has increased drastically over the last three decades, thus posing risk to the environment and human health. Some technologies have long been in use to remediate the hazardous heavy metal(loid)s. Conventional remediation methods for heavy metal(loid)s are generally based on physical, chemical and biological approaches, which may be used in combination with one another to clean-up heavy metal(loid) contaminated soils to an acceptable and safe level. This review summarizes the soil contamination by heavy metal(loid)s at a global scale, accumulation of heavy metal(loid)s in vegetables to toxic levels and their regulatory guidelines in soil. In this review, we also elucidate and compare the pool of available technologies that are currently being applied for remediation of heavy metal(loid) contaminated soils, as well as the economic aspect of soil remediation for different techniques. This review article includes an assessment of the contemporary status of technology deployment and recommendations for future remediation research. Finally, the molecular and genetic basis of heavy metal(loid) (hyper)accumulation and tolerance in microbes and plants is also discussed. It is proposed that for effective and economic remediation of soil, a better understanding of remediation procedures and the various options available at the different stages of remediation is highly necessary.

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“…They reported that in highly weathered and neutral Cu-Pb-Zn tailings, the native soil inoculation approach may be used to fast-track the establishment of native microbial communities and initiate the rehabilitation of biogeochemical processes in the engineered soil for establishing native plant species. A recent study by Cele and Maboeta [18] on properties of biosolids and plants on physicochemical conditions of iron ore tailings showed that biosolids and plants are able to improve conditions related to iron ore mine soil fertility and recolonization of reclaimed sites may be affected by higher metal concentrations.…”

Section: Treatment Of Mining Wastesmentioning

confidence: 99%

Process effluents and mine tailings: sources, effects and management and role of nanotechnology

Mohapatra

Kirpalani

2016

Nanotechnol. Environ. Eng.

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Increasing population levels, growing economies, rapid urbanization and changes in consumption patterns have increased the demand for raw materials such as base and precious metals, leading to growing concerns regarding their availability and the global efficiency of the mine supply chain. Mine tailings, consisting of process effluents that are generated in a mineral processing plant, are generally transferred to tailings ponds/impoundments to meet environmental regulations and site-specific factors before discharge. Most mining activities induce an impact on their geochemical environment (e.g., water, groundwater) due to the presence of metal-rich tailing deposits. The need for a comprehensive framework for mine tailings management that promotes sustainable development is therefore becoming increasingly recognized by the mining industry. Therefore, for sustainable rehabilitation and disposal of mining waste, the sources and mechanisms of pollutant generation and their subsequent effect on environment and sustainable treatment methods are critical. This review includes information on different sources of mining waters and its effect on groundwater contamination and ecological effects. The review also encompasses a broad range of mine water treatment strategies available for innovative management of mining tailings with a specific emphasis on the role of nanoparticles in the management of mine waters.

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A greenhouse trial to investigate the ameliorative properties of biosolids and plants on physicochemical conditions of iron ore tailings: Implications for an iron ore mine site remediation

Cited by 36 publications

References 68 publications

Response of soil enzyme activities to synergistic effects of biosolids and plants in iron ore mine soils

Response of soil enzyme activities to synergistic effects of biosolids and plants in iron ore mine soils

A comparison of technologies for remediation of heavy metal contaminated soils

Process effluents and mine tailings: sources, effects and management and role of nanotechnology

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