Kinetics of Lead Bioaccumulation from a Hydroponic Medium by Aquatic Macrophytes Pistia stratiotes

Espinoza‐Quiñones, Fernando Rodolfo; Módenes, Aparecido Nivaldo; Costa, Ismael Laurindo; Palácio, Soraya Moreno; Szymanski, Nayara; Trigueros, Daniela Estelita Góes; Kroumov, Alexander Dimitrov; Silva, Edson Antônio da

doi:10.1007/s11270-009-9989-8

Cited by 29 publications

(8 citation statements)

References 22 publications

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“…The highest removal percentage at 5.0 mg l −1 was exhibited in P. stratiotes (97) followed by S. auriculata (80), A. filiculoides (78), and S. minima (70). These results correspond with the great ability of P. stratiotes, which accumulates approximately 50% of lead after 24 h (Espinoza-Quiñones et al 2009). At 10 mg l −1 the percentage removal efficiency of P. stratiotes had (95) followed by A. filiculoides (94), S. minima (89), and S. auriculata (84).…”

Section: Heavy Metal Removal Efficiency Of Different Plant Speciessupporting

confidence: 81%

The Use of Water Lettuce (Pistia StratiotesL.) for Rhizofiltration of a Highly Polluted Solution by Cadmium and Lead

Veselý

Tlustoš

Száková

2011

International Journal of Phytoremediation

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The effectiveness of heavy metal uptake from contaminated nutrient solution by four aquatic macrophytes (Pistia stratiotes L., Salvinia auriculata AubL, Salvinia minima Baker, and Azolla filiculoides Lam) was estimated in this study. The influence of cadmium (3.5 mg L(-1) and 10.5 mg L(-1)) and lead (25 mg L(-1) and 125 mg L(-1)) on the stress symptoms was observed through the determination of chlorophyll content and transpiration rate over 14 days of the experiment. The results of the present study showed extreme reductions in Cd and Pb concentrations in solution during the first 4 days. The accumulation of Pb in plant tissues was the highest during the first 4 days and was more than 10 times higher in the roots (42,862 mg kg(-1)) than in the leaves (3867 mg kg(-1)). The accumulation of Cd slowly increased and was the highest at the end of the experiment. Concentrations in roots (3923 mg kg(-1)) were roughly 6 times higher than in the leaves (624 mg kg(-1)). Results showed significant decrease in the transpiration rate at Pb treatment and a significant increase at Cd treatment during 48 hours of exposition.

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Section: Heavy Metal Removal Efficiency Of Different Plant Speciessupporting

confidence: 81%

The Use of Water Lettuce (Pistia StratiotesL.) for Rhizofiltration of a Highly Polluted Solution by Cadmium and Lead

Veselý

Tlustoš

Száková

2011

International Journal of Phytoremediation

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“…When toxic metals are discharged into natural waters, appropriate methods are required to remove these metal pollutants. Conventional methods including physiochemical and biological technologies have been employed to remove toxic metals from aqueous solutions [1,2]. Phytoplankton is suggested to be potential and attractive biosorbents to concentrate heavy metals due to their ubiquitous presence in aquatic ecosystems and high binding affinity to metals [1].…”

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confidence: 99%

Comparison of heavy metal accumulation by a bloom-forming cyanobacterium, Microcystis aeruginosa

Zeng

Zhao

et al. 2012

Chin. Sci. Bull.

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Microcystis aeruginosa is the dominant species during cyanobacterial blooms in freshwater lakes. In the present study, we compared the bioaccumulation characteristics of cadmium (Cd) and zinc (Zn) in Microcystis cells. In short-term uptake tests, a rapid sorption of Cd and Zn occurred in the first few minutes, with a subsequent slower internalization process. No obvious difference was observed between Zn and Cd in terms of their short-term uptake kinetics. In efflux experiments, elimination of Zn from the cells was faster than that of Cd. In the 72-h exposure tests, the intracellular Cd concentrations increased with exposure time whereas the intracellular Zn concentrations always reached a plateau. The cellular Cd showed greater variation than the cellular Zn at various free Cd 2+ or Zn 2+ concentrations. The differences in Cd and Zn accumulation and elimination indicated that Microcystis cells had a higher bioaccumulation capacity for Cd than for Zn. In field studies, the bioconcentration factor (BCF) of Cd in lake-harvested Microcystis was more than 10 times higher than those of other metals. The results of the present study strongly suggested that the bloom-forming Microcystis may affect the Cd transportation and biogeochemical cycling in eutrophic freshwater ecosystems. The bioaccumulation behaviors of heavy metals have attracted substantial attention. When toxic metals are discharged into natural waters, appropriate methods are required to remove these metal pollutants. Conventional methods including physiochemical and biological technologies have been employed to remove toxic metals from aqueous solutions [1,2]. Phytoplankton is suggested to be potential and attractive biosorbents to concentrate heavy metals due to their ubiquitous presence in aquatic ecosystems and high binding affinity to metals [1]. Generally, dried phytoplankton biomass is often used in the removal of metals with concentrations greater than several grams per liter [3,4]. In the case of low soluble metal concentrations in natural waters, phytoplankton cells play important roles in metal bioaccumulation and transportation, which are of interest and need further investigation. Cadmium (Cd) and zinc (Zn) are major metal pollutants commonly found in industrial effluents. Cd is a non-essential element for most organisms and can be accumulated in organisms and subsequently result in severe toxicity. Zn is an essential micronutrient at low concentrations, which is also potentially hazardous to organisms when present at higher concentrations [5,6]. The Cd and Zn have similar chemical properties in natural aquatic environments; thus, a comparative study of these two substances might have relevant ecological implications. Bioaccumulation of metals by different groups of phytoplankton has been investigated in previous studies [7][8][9]. Among these algal biosorbents, cyanobacteria are attractive because they are ubiquitous in nature and exhibit good

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“…However, when the most of these methodologies are applied in low metal concentration effluent treatments, they could have high chemical costs or low removal efficiencies, low selectivities, high-energy requirements, and generation of secondary toxic slurries [10]. A variety of mechanisms exist for the removal of heavy metals in low concentrations from aqueous solution by macrophytes [11][12][13][14][15][16], activated carbon [17], fungi [18], orange peel [19][20][21], and higher plants [22], sequestering and accumulating metallic ions.…”

Section: Introductionmentioning

confidence: 99%

Kinetic and equilibrium adsorption of Cu(II) and Cd(II) ions on Eichhornia crassipes in single and binary systems

Módenes

Espinoza‐Quiñones

Trigueros

et al. 2011

Chemical Engineering Journal

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Kinetics of Lead Bioaccumulation from a Hydroponic Medium by Aquatic Macrophytes Pistia stratiotes

Cited by 29 publications

References 22 publications

The Use of Water Lettuce (Pistia StratiotesL.) for Rhizofiltration of a Highly Polluted Solution by Cadmium and Lead

The Use of Water Lettuce (Pistia StratiotesL.) for Rhizofiltration of a Highly Polluted Solution by Cadmium and Lead

Comparison of heavy metal accumulation by a bloom-forming cyanobacterium, Microcystis aeruginosa

Kinetic and equilibrium adsorption of Cu(II) and Cd(II) ions on Eichhornia crassipes in single and binary systems

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