Phytoremediation of lead by jack beans on a Rhodic Hapludox amended with EDTA

Pereira, Bruno Fernando Faria; Abreu, Cleide Aparecida de; Herpin, Uwe; Abreu, Mônica Ferreira de; Berton, Ronaldo Severiano

doi:10.1590/s0103-90162010000300009

Cited by 32 publications

(13 citation statements)

References 37 publications

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“…Other authors (Paiva et al, 2000;Boonyapookana et al, 2005;Alves et al, 2008;Pereira et al, 2010;Danh et al, 2011;Seth et al, 2011;Zhivotovsky et al, 2011;Hamadouche et al, 2012;Hamvumba et al, 2014) also found reductions of dry matter production in many plant species as a function of the application of increasing doses of Pb in experiments with soil and nutrient solution. The Pb toxicity observed in the present study is due to its action on plants, causing physiological, biochemical and structural disorders, such as disequilibrium in water and hormone balance, nutritional disorders, loss of membrane permeability, reduction of enzymatic activity, inhibition of respiration and photosynthesis, among others (Yadav, 2010;Gupta et al, 2013).…”

Section: Resultsmentioning

confidence: 89%

Potential of sunflower, castor bean, common buckwheat and vetiver as lead phytoaccumulators

Alves

Souza

Pôrto

et al. 2016

Rev. bras. eng. agríc. ambient.

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A B S T R A C TStudies concerning the tolerance, absorption and distribution of heavy metals in plants are essential for the success of phytoremediation programs. The present study was carried out in order to evaluate the potential of the sunflower, castor bean, common buckwheat and vetiver as lead phytoaccumulators. The species were grown in nutrient solution containing increasing doses of Pb (0, 50, 100, 200 and 400 mg L -1 ) during a 30-day exposure period. A completely randomized split-plot design was used, with a 4 x 5 factorial and three replicates. Significant reductions of dry matter of the root, shoot and whole plant were found in the all species under study as a function of the increased Pb doses. Vetiver showed higher tolerance to Pb contamination; sunflower and castor bean had intermediate tolerance and the common buckwheat proved to be the most sensitive species. The concentration and total content of Pb in plant compartments were significantly affected by the increased Pb doses in solution, and higher accumulation of this element was observed, in general, in the roots of the studied species. Common buckwheat proved to be not much promising for Pb-phytoremediation programs; sunflower showed potential for Pb phytoextraction and castor bean and vetiver were the most appropriate for Pb phytostabilization.Potencial de girassol, mamona, trigo mourisco e vetiver como fitoacumuladoras de chumbo R E S U M O Estudos sobre a tolerância, absorção e distribuição de metais pesados em plantas, são essenciais para se obter sucesso em programas de fitorremediação. O objetivo foi avaliar o potencial de girassol, mamona, trigo mourisco e vetiver como fito-acumuladoras de chumbo (Pb). As espécies foram cultivadas em solução nutritiva com doses crescentes de Pb (0, 50, 100, 200 e 400 mg L -1 ) durante 30 dias. O delineamento empregado foi o inteiramente casualizado em parcela subdividida com o fatorial 4 x 5, com três repetições. Foram constatadas reduções na matéria seca da raiz, parte aérea e planta inteira das espécies estudadas em resposta à elevação das doses de Pb. O vetiver mostrou a maior tolerância ao Pb, a mamona e o girassol apresentaram tolerância intermediária e o trigo mourisco se mostrou a espécie mais sensível. Os teores e conteúdos de Pb nos compartimentos das plantas aumentaram com a elevação das doses de Pb, tendo sido verificado, de forma geral, maior acúmulo deste elemento nas raízes. O trigo mourisco mostrou-se pouco promissor para programas de fitorremediação de Pb, o girassol apresentou potencial para fitoextração de Pb e a mamona e vetiver se mostraram mais adequadas para fitoestabilização desse elemento.

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Section: Resultsmentioning

confidence: 89%

Potential of sunflower, castor bean, common buckwheat and vetiver as lead phytoaccumulators

Alves

Souza

Pôrto

et al. 2016

Rev. bras. eng. agríc. ambient.

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“…The solubility and bioavailability of heavy metals can be improved by adding synthetic chelators such as ethylene diamine tetraeacetic acid (EDTA), diethylene triamine pentaeacetic acid (DTPA), and ethylene glycol tetraeacitic acid (AGTA), which enhance uptake by plants (Saifullah et al 2009;Pereira et al 2010). The molecules of the chelators bind the metal atom, thereby increasing its concentration in soil aqueous phase and its mobility (Wu et al 2010).…”

Section: Chemical Methodsmentioning

confidence: 99%

Progresses in restoration of post-mining landscape in Africa

et al. 2018

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Mining alters the natural landscape and discharges large volumes of wastes that pose serious pollution hazards to the environment, to human health and to agriculture. As a result, the recent 2 decades have witnessed a global surge in research on post-mining landscape restoration, yielding a suite of techniques including physical, chemical, biological (also known as phytoremediation) and combinations. Despite the long history of mining in Africa, no systematic review has summarized advances in restoration research and practices after mining disturbance. Thus, the aim of this review was to document the state-of-knowledge and identify gaps in restoration of postmining landscape in Africa through literature review. We found that: (1) there has been substantial progress in identifying species suitable for phytoremediation; (2) few studies evaluated the feasibility of organic amendments to promote autochthonous colonization of mine wastelands or growth of planted species; and (3) restoration of limestone quarries in Kenya, sand mining tailings in South Africa, and gold mine wasteland in Ghana are successful cases of large-scale post-mining restoration practices in Africa. However, the pace of post-mining landscape restoration research and practice in Africa is sluggish compared to other parts of the global south. We recommend: (1) mainstreaming the restoration of mine wastelands in national research strategies and increased development planning to make the mining sector ''Green''; (2) inventory of the number, area, and current status of abandoned mine lands; (3) expanding the pool of candidate species for phytostabilization; (4) further evaluating the phytostabilization potential of organic amendments, e.g., biochar; (5) assessing the impacts of mining on regional biodiversity.

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“…Some synthetic chelating agents, such as ethylene diamine tetraacetic acid (EDTA), diethylene triamine pentaacetic acid (DTPA) and ethylene glycol tetraacetic acid (EGTA) have been used successfully for induced phytoextraction (Pereira et al, 2010). However, the application of such synthetic chelating agents introduces an environmental risk due to their high mobility in the soil, which can result in the transport of the contaminant to uncontaminated surrounding areas; this movement can potentially become a problem due to the high solubility and persistence in the soil of the chelate-heavy metal complex (Luo et al, 2006;Quartacci et al, 2007).…”

Section: Synthetic Chelating Agentsmentioning

confidence: 99%

Use of non-hyperaccumulator plant species for the phytoextraction of heavy metals using chelating agents

Souza

Piotto²,

Nogueirol³

et al. 2013

Sci. agric. (Piracicaba, Braz.)

104

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Soil contamination by heavy metals is a challenge faced by many countries, and engineering technologies to solve this problem are expensive and can cause negative impacts on the environment. One way to minimise the levels of heavy metals in the soil is to use plants that can absorb and accumulate heavy metals into harvestable parts, a process called phytoextraction. Typical plant species used in research involving phytoextraction are heavy metal hyperaccumulators, but plants from this group are not good biomass producers and grow more slowly than most species; thus, they have an important role in helping scientists understand the mechanisms involved in accumulating high amounts of heavy metals without developing symptoms or dying. However, because of their slow growth, it is not practical to use these species for phytoextraction. An alternative approach is to use non-hyperaccumulator plants assisted by chelating agents, which may improve the ability of plants to accumulate more heavy metals than they would naturally. Chelating agents can be synthetic or organic acids, and the advantages and disadvantages of their use in improving the phytoextraction potential of non-hyperaccumulator plants are discussed in this article. We hope to draw attention to ways to improve the phytoextraction potential of non-hyperaccumulator plants that produce a large amount of biomass and to stimulate more research on phytoextraction-inducing substances.

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Phytoremediation of lead by jack beans on a Rhodic Hapludox amended with EDTA

Cited by 32 publications

References 37 publications

Potential of sunflower, castor bean, common buckwheat and vetiver as lead phytoaccumulators

Potential of sunflower, castor bean, common buckwheat and vetiver as lead phytoaccumulators

Progresses in restoration of post-mining landscape in Africa

Use of non-hyperaccumulator plant species for the phytoextraction of heavy metals using chelating agents

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