Phytoextraction of lead, zinc and cadmium from soil by selected plants

Kos, B.; Grčman, Helena; Leštan, Domen

doi:10.17221/4192-pse

Cited by 124 publications

(68 citation statements)

References 16 publications

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“…Seth et al (2011) demonstrated that the application of EDTA together with lead (Pb) increased the amount of Pb accumulated by more than 80 % in the aboveground parts of sunflower plants cultivated in hydroponic system. Kos et al (2003) also demonstrated that EDTA application promoted the accumulation of Pb, Cd and Zn in several plant species from different families, including Cannabis sativa, Medicago sativa, Zea mays and Sorghum vulgare.…”

Section: Hyperaccumulator and Non-hyperaccumulator Plant Species: Advmentioning

confidence: 86%

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.)

103

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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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Section: Hyperaccumulator and Non-hyperaccumulator Plant Species: Advmentioning

confidence: 86%

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.)

103

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“…The result also differed with the observations of Gallardo-lara et al, [32] who observed increased residual extractable Zn following increased application of waste. Also, the works of Islam et al, [5], Okoronkwo et al, [4] and Kos et al, [6] showed that when an environment becomes polluted with Zn, it begins its journey to man's body by been readily absorbed by plants which are subsequently consumed by man.…”

Section: Soil Heavy Metalsmentioning

confidence: 99%

“…While Okoronkwo et al [4] and Islam et al [5] reiterated that once an environment was polluted with zinc, for example it began its journey to man's body by being readily absorbed by plants [6] which were subsequently consumed directly by animals and indirectly by human. Heavy metals which are inorganic pollutant particles/elements that are in excess quantities accumulate in soils in various forms.…”

Section: Introductionmentioning

confidence: 99%

Influence of Tillage and Wood Ash on Zn and Fe Content of Soil, Castor Shoot and Seed

Nweke¹,

Mbah²,

Ijearu³

2017

OALib

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The effect of tillage methods (Mound, Ridge, Flat) and rates of wood ash on soil properties and yield of castor bean plant were studied in field trial at Abakaliki for 3 years cropping seasons. The experiment was a split plot in randomized complete block design with three tillage methods and four rates of wood ash (0 t•ha ), replicated three times. CropStat Version 7.2 computer software for data management developed primarily for the analysis of data from agricultural field trials was used to analyze data collected from the study and mean separation was done using least significant difference (LSD) at 5% alpha level. The findings from the study showed for soil heavy metal contents, it was observed that tillage methods had no effect on the heavy metals except for 1 st year cropping result of Zn and 2 nd year cropping result of Fe. The effect of tillage methods on heavy metal contents of castor shoot showed a significant difference P < 0.05 except for 3 rd year result of Fe. The values obtained from Ridge and Flat were higher when compared with the value of Mound with regard to soil and castor shoot; heavy metal content with higher values was more observed in Flat method. The result of heavy metal content of seed indicated that tillage method had no effect on the heavy metal contents of the castor seed; the results of Fe, Zn in 1 st and 2 nd year planting season were not significant among the rates of wood ash applied. The effect of tillage and wood ash on heavy metal content of soil, castor shoot and seed was found to be significant (P < 0.05). The values obtained decreased as the planting season increased, and the amount was found to increase as the rates of wood ash application increased. The effect of Ridge and wood ash at the rates of 2 t•ha −1 (Rd 2 ), 4 t•ha −1 (Rd 4 ) and 6 t•ha −1 (Rd 6 ) on Fe 2 nd year planting result of castor seed was statistically similar, while the result from Mound method was found to increase the seed uptake of the tested parameters.The observed values of the tested parameters (Fe, Zn) in wood ash amended plots in the three years' study were beyond acceptable limits; hence reservation in the use of wood ash How to cite this paper: Nweke, I.A., Mbah,

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“…The phytoextraction potential (PP) represents the total amount of heavy metals extracted per pot of soil in one single phytoextraction cycle and can be calculated as follows (Kos et al 2003):…”

Section: Calculation Of Phytoextraction Potentialmentioning

confidence: 99%

Phytoextraction of Pb and Cu Contaminated Soil With Maize and Microencapsulated EDTA

Xie

NengChang

et al. 2012

International Journal of Phytoremediation

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Phytoextraction of lead, zinc and cadmium from soil by selected plants

Cited by 124 publications

References 16 publications

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

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

Influence of Tillage and Wood Ash on Zn and Fe Content of Soil, Castor Shoot and Seed

Phytoextraction of Pb and Cu Contaminated Soil With Maize and Microencapsulated EDTA

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