Chelate enhanced phytoremediation of soil containing a mixed contaminant

Ramamurthy, Amruthur S.; Memarian, Ramin

doi:10.1007/s12665-013-2946-2

Cited by 15 publications

(10 citation statements)

References 30 publications

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“…Thus, enhance the phytoremediation efficiency by solving the low metal phytoavailability issue. Some commonly available chelators are EDTA: accumulation in plants has been tested and reviewed by many workers (Xie et al 2012;Ramamurthy and Memarian 2014;Sun et al 2015;Chirakkara et al 2016). Organic soil amendments are cheaper, ecofriendly, and non-or less toxic and degradable in nature.…”

Section: Phytoremediation Approaches For Environmental Cleanupmentioning

confidence: 99%

Phytoremediation of Heavy Metal-Contaminated Sites: Eco-environmental Concerns, Field Studies, Sustainability Issues, and Future Prospects

Saxena¹,

Purchase²,

Mulla³

et al. 2019

Reviews of Environmental Contamination and Toxicology

141

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Section: Phytoremediation Approaches For Environmental Cleanupmentioning

confidence: 99%

Phytoremediation of Heavy Metal-Contaminated Sites: Eco-environmental Concerns, Field Studies, Sustainability Issues, and Future Prospects

Saxena¹,

Purchase²,

Mulla³

et al. 2019

Reviews of Environmental Contamination and Toxicology

141

View full text Add to dashboard Cite

“…The presence of more than one heavy metal in the soil would possibly affect the overall phyto-remediation ability in the plants (Chirakkara et al 2016). Many recent studies by Ramamurthy and Memarian (2014), Hechmi et al (2014) and Chigbo and Batty (2015) reported that the use of two and more different types of soil contaminants could unexpectedly limit their mobility and bioavailability resulting in reduction of phyto-accumulation efficiency in plants. However, this study demonstrated findings to the contrary, with Vetiver grass showing substantially high phyto-accumulation ability under mixed metal spiked treatments as compared to single heavy metal spiked treatments.…”

Section: Heavy Metal Translocationmentioning

confidence: 99%

Evaluation of Vetiver Grass Uptake Efficiency in Single and Mixed Heavy Metal Contaminated Soil

Boyce

Abas

et al. 2020

Environ. Process.

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Most phyto-remediation studies have been conducted merely on a single type of contaminant element without consideration of the influence of other co-existent contaminants. In this study, Vetiveria zizanioides (Linn.) Nash was evaluated in both single and mixed heavy metal (Cd, Pb, Cu and Zn) spiked contaminated soil. The plant growth, metal accumulation and overall efficiency of metal uptake by different plant parts (lower root, upper root, lower tiller and upper tiller) were investigated in detail. The relative growth performance, metal tolerance and phyto-assessment of heavy metal in roots and tillers of Vetiver grass were assessed. Metals in plants were measured using the flame atomic absorption spectrometry (F-AAS) after acid digestion. The root-tiller (R/T) ratio, tolerance index (TI), translocation factor (TF), biological concentration factor (BCF), biological accumulation coefficient (BAC) and metal uptake efficacy were estimated to examine the ability of metal accumulation and translocation in Vetiver grass. No significant difference (p > 0.05) of plant height was observed among all single and mixed heavy metal spiked soils compared with the control. However, significantly higher (p < 0.05) heavy metal (Cd, Pb, Cu and Zn) accumulations were found in roots, tillers and overall total accumulation of the individual spiked metal as compared with other treatments. Vetiver grass grown in the mixed Cd + Pb + Cu + Zn spiked soils accumulated the highest Zn (3322 ± 21.6 mg/kg) followed by Cu (430 ± 11.4 mg/kg), Pb (197 ± 13.5 mg/kg) and Cd (100 ± 0.7 mg/kg). Vetiver grass grown in mixed Cd + Pb, Cu + Zn and Cd + Pb + Cu + Zn spiked soils accumulated higher heavy metal concentrations than from the single spiked soil with the following order of metals: Zn > > Cu > Pb > Cd. Moreover, lower roots and lower tillers of Vetiver grass revealed a strong tendency for greater uptake and accumulation of all four heavy metals in both single and/or mixed spiked contaminated soils.

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“…In most cases, EDTA was superior to EDDS in terms of solubilizing Cd, Pb, and Mn, whereas EDDS was more effective in solubilizing Cu and Ni [51]. Several studies have shown that EDTA is not easily biodegraded [10,40,49], and that EDTA and metal-EDTA complexes are toxic to soil microorganisms [15,41] and plants [7,9]. As a result, the use of easily biodegradable chelants such as EDDS, MGDA, and NTA has been proposed for soil phytoremediation [38,[59][60]63].…”

Section: Choice Of Chelantsmentioning

confidence: 99%

“…The success of phytoextraction is dependent on large biomass production and high concentrations of heavy metals in the shoots of plants [7][8]. In order to improve the efficiency of heavy metal accumulation in plant shoots, a few fastgrowing, high-biomass plant species and some chelants have been evaluated for potential use in phytoextraction, as low biomass production and slow growth of the hyperaccumulators are the factors that limit this efficiency [9]. Chelant-enhanced phytoextraction of heavy metals from contaminated soils have aroused public concern as a cost-effective and environmentally friendly alternative to conventional techniques of soil remediation, the efficiency of chelant-enhanced phytoextraction depends on metal, plant species, and chelant concentration [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Chelant-Induced Phytoextraction of Heavy Metals from Contaminated Soils: A Review

Xin-min¹,

Cui²,

Tang³

et al. 2018

Pol. J. Environ. Stud.

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Chelant-induced phytoextraction is considered an ideal remedial technique for removing heavy metals from contaminated soils. However, it can increase the risk of adverse environmental effects due to increased metal mobilization and the persistence of both chelants and metal-chelant complexes for extended periods of time. This paper reviews the mechanism, potential risks, and optimization of chelant-induced phytoextraction of toxic metals from contaminated soils. The advantages and major drawbacks of phytoextraction, along with possible strategies to reducing the risks associated with chelant application, are reviewed. Moreover, the directions for future research on chelant-assisted phytoextraction are briefly discussed. The objective of this paper was to comprehensively review chelant-assisted phytoextraction, and it will provide an effective and safe remediation technology for heavy metal-contaminated soils.

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Chelate enhanced phytoremediation of soil containing a mixed contaminant

Cited by 15 publications

References 30 publications

Phytoremediation of Heavy Metal-Contaminated Sites: Eco-environmental Concerns, Field Studies, Sustainability Issues, and Future Prospects

Phytoremediation of Heavy Metal-Contaminated Sites: Eco-environmental Concerns, Field Studies, Sustainability Issues, and Future Prospects

Evaluation of Vetiver Grass Uptake Efficiency in Single and Mixed Heavy Metal Contaminated Soil

Chelant-Induced Phytoextraction of Heavy Metals from Contaminated Soils: A Review

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