Characterization of coal fly ash and use of plants growing in ash pond for phytoremediation of metals from contaminated agricultural land

Kisku, Ganesh Chandra; Kumar, Vinay; Sahu, Pokhraj; Kumar, Pramod; Kumar, Narendra

doi:10.1080/15226514.2017.1381942

Cited by 31 publications

(12 citation statements)

References 18 publications

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“…Fly ash is a waste material of coal-based industries and its storage and disposal have become a major concern worldwide ( Pandey, 2013 ). The managing fly ash deposits becomes imperious in ecological stand points as fly ash contains toxic metals ( Haynes, 2009 ; Kisku et al., 2018 ). To overawed this problem, phytorestoration is the need of the hour for managing the fly ash dump site ( Gajić et al., 2013 ).…”

Section: Introductionmentioning

confidence: 99%

Physiological response of metal tolerance and detoxification in castor (Ricinus communis L.) under fly ash-amended soil

Panda

Mandal

Barik

et al. 2020

Heliyon

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Castor ( Ricinus communis L.) is a metal tolerant plants and its ability to survive in highly polluted sites as well as its capacity for metal accumulation. There are very few reports on their physiological mechanism of metal tolerance and detoxification under fly ash. Therefore, an in-situ experiment was designed to study its biomass accumulation, photosynthetic response and antioxidative metabolism under different levels of fly ash amendments. Significant (P < 0.05) increase in plant biomass and metal tolerance index was observed in R. communis under 50 % fly ash in soil amendments in comparison to the control plants. In addition, photosynthetic activity was not significantly altered under fly ash amended soil in comparison to the garden soil, but these responses/activities were remarkable lowered under bare fly ash. The induction of antioxidant enzymes was also observed in different tissue over control under fly ash treatments. The bioconcentration factor (BCF) of Al, Fe, Zn, Mn, Cu and Cr in R. communis were recorded greater than one under fly ash (50%) with soil amendments. Therefore, it concluded that it can be used for phytoremediation of fly ash and fly ash (50%) with soil amendments enhanced phytoremediation ability.

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Section: Introductionmentioning

confidence: 99%

Physiological response of metal tolerance and detoxification in castor (Ricinus communis L.) under fly ash-amended soil

Panda

Mandal

Barik

et al. 2020

Heliyon

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show abstract

“…Even though that is the case, agricultural lands have been continuously contaminated by direct discharge of industrial effluents, runoff wastewater from ash dumps, overflow of ash dykes during rainy seasons, or through the atmospheric fallout of CFA [6]. If soil and water get contaminated with industrial effluents containing high levels of chemical species, the chemical species find their way into food crops and vegetables and, consequently, enter the food web.…”

Section: Introductionmentioning

confidence: 99%

“…This is because conventional remediation methods, such as acid leaching, land-filling, and excavation processes, are very expensive and not ecofriendly [8]. Phytoremediation is aimed at providing an innovative, economical, environmentally friendly approach for removing toxic chemical species from hazardous-waste sites [6]. It involves techniques such as rhizofiltration, phytostabilization, phytovolatilization, and phytoextraction.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the Bioavailability and Translocation of Selected Heavy Metals by Brassica juncea and Spinacea oleracea L for a South African Power Utility Coal Fly Ash

Mashau

Gitari

Akinyemi

2018

IJERPH

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This study evaluated the physicochemical and mineralogical properties, mobile chemical species bioavailability and translocation in Brassica juncea and Spinacea oleracea L. plants of a South African coal-fired power utility. Coal-fly-ash (CFA) disposal is associated with various environmental and health risks, including air, soil, surface, and groundwater pollution due to the leaching of toxic heavy metals; these ends up in food webs affecting human health, while repeated inhalation causes bronchitis, silicosis, hair loss, and lung cancer. The morphology and chemical and mineralogical composition of CFA were determined using Scanning Electron Microscopy (SEM), X-ray fluorescence (XRF), and X-ray diffraction, respectively. In pot-culture experiments, S. oleracea L. and B. juncea plants were grown in three sets of pots containing CFA (Set 1), soil (Set 2), and a mixture of CFA plus soil at a ratio of 1:1 (50% CFA: 50% soil, Set 3), while no plants were grown in Set 4 as a control for the leachate samples. SEM showed that the surface morphology of CFA has a lower degree of sphericity with the irregular agglomerations of many particles. XRF results revealed that CFA contains 43.65%, 22.68%, and 10.89% of SiO2, Al2O3, and Fe2O3, respectively, which indicates that CFA is an aluminosilicate material. X-ray diffraction (XRD) showed that CFA contains mullite as a major phase, followed by quartz mineral phases. Chemical species such as B, Ba, Mo, and Cr were occurring at higher concentrations in the leachates for most weeks in the pot-culture experiments, especially for CFA and soil + CFA growth media. However, there was a common trend for all growth media of chemical-species concentrations declining with time, which might have been caused by plant uptake or wash-off with water during irrigation; even for the growth media as well, where no plants were grown. Chemical species, such as Fe, Mn, B, Ba, and Zn, accumulated highly in most parts of the plant species. However, B. juncea showed higher potential to accumulate chemical species as compared to S. oleracea L. Bioconcentration and translocation factors (BF and TF) showed that B. juncea was the most effective in terms of bioconcentration and translocation of most of the chemical species. This indicates that B. juncea has potential in application for the phytoremediation of CFA dumps, and could contribute to the remediation of CFA dumps and the reduction of potential health and environmental impact associated with CFA.

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“…Even though that is the case, agricultural lands have been continuously contaminated by direct discharge of industrial effluents, runoff wastewater from ash dumps, overflow of ash dykes during rainy seasons or through atmospheric fallout of CFA [6]. If soil and water get contaminated with industrial effluents containing high levels of chemical species, the chemical species find their way into food crops and vegetables and consequently enter the food web.…”

Section: Introductionmentioning

confidence: 99%

“…This is because conventional remediation methods such as acid leaching, land-filling, and excavation process are very expensive and not eco-friendly [7]. Phytoremediation is aimed at providing an innovative, economical, environment-friendly approach for removing toxic chemical species from hazardous waste sites [6]. It involves techniques such as rhizofiltration, phytostabilization, phytovolatilization and phytoextraction.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the Bioavailability and Translocation of Selected Mobile Chemical Species by <em>Brassica juncea</em> and <em>Spinacea oleracea L</em> for a South African Power Utility Coal Fly Ash

Mashau¹,

Gitari²,

Akinyemi³

2018

Preprint

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This study evaluated the physicochemical, mineralogical properties, mobile chemical species’ bioavailability and translocation in Brassica juncea and Spinacea oleracea L plants of a South African coal fired power utility. Coal fly ash (CFA) disposal is associated with various environmental and health risks including air, soil, surface and ground water pollution due to the leaching of toxic chemical species; these ends up in food webs affecting  human health, while repeated inhalation causes bronchitis, silicosis, hair loss and lung cancer. The morphology, chemical, and mineralogical composition of CFA were determined using Scanning Electron Microscopy (SEM), X-ray fluorescence (XRF) and X-ray Diffraction, respectively. In pot culture experiments, S. oleracea L and B. juncea plants were grown in three sets of pots containing CFA (set 1), soil (set 2) and a mixture of CFA plus soil at ratio 1:1 (50% CFA: 50% soil) (set 3), while no plants were grown in set 4 as a control for the leachate samples. SEM showed that surface morphology of CFA has a lower degree of sphericity with irregular agglomerations of many particles. The XRF results revealed that CFA contains 43.65%, 22.68% and 10.89% of SiO2, Al2O3 and Fe2O3 respectively which indicate that the CFA is an alumino-silicate material. While XRD showed that the coal CFA contains mullite as a major phase followed by quartz mineral phases. Chemical species such as Fe, Mn, B, Ba and Zn were accumulated highly in most parts of the plant species. However, B. juncea showed higher potential to accumulate chemical species as compared to S. oleracea L. The bioconcentration and translocation factors (BF and TF) showed that B. juncea was the most effective in terms of bioconcentration and translocation of most of the chemical species. This indicates that B. juncea has potential in application for phytoremediation of CFA dumps and could contribute to remediation of CFA dumps and reduction of potential health and environmental impacts associated with CFA.

show abstract

Characterization of coal fly ash and use of plants growing in ash pond for phytoremediation of metals from contaminated agricultural land

Cited by 31 publications

References 18 publications

Physiological response of metal tolerance and detoxification in castor (Ricinus communis L.) under fly ash-amended soil

Physiological response of metal tolerance and detoxification in castor (Ricinus communis L.) under fly ash-amended soil

Evaluation of the Bioavailability and Translocation of Selected Heavy Metals by Brassica juncea and Spinacea oleracea L for a South African Power Utility Coal Fly Ash

Evaluation of the Bioavailability and Translocation of Selected Mobile Chemical Species by <em>Brassica juncea</em> and <em>Spinacea oleracea L</em> for a South African Power Utility Coal Fly Ash

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