STUDY OF BINARY AND SINGLE BIOSORPTION BY THE FLOATING AQUATIC MACROPHYTE Salvinia natans

Lima, L. K. S.; Silva, M. G. C.; Vieira, Melissa Gurgel Adeodato

doi:10.1590/0104-6632.20160333s20150483

Cited by 20 publications

(8 citation statements)

References 27 publications

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“…In this study, the FTIR-ATR spectrum obtained for S. biloba biomass (Fig. 3) is closely related to that reported by [34]. The bands at 3400-3250 cm −1 are assigned to the OH stretch of polymeric compounds, the band at 2940-2830 cm -1 refer to the asymmetric and symmetric vibration of methylene (CH 2 ), respectively.…”

Section: Adsorption Isothermssupporting

confidence: 84%

“…The content of macromolecules (carbohydrates, protein, lipids), acidic groups (carboxylic groups) and surface area are key factors which determine the binding mechanism between metal and biomass. Recently, [34] obtained the FTIR-ATR spectrum for S. natans biomass before and after the biosorption process of Pb 2+ and Cr 3+ ions. These authors reported the presence of different functional groups at Salvinia biomass such as carboxyl, phosphate, amide, hydroxyl and others suggesting the involvement of these functional groups (particularly phosphonates groups) in metals adsorption.…”

Section: Adsorption Isothermsmentioning

confidence: 99%

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Evaluation of the autochthonous free-floating macrophyte Salvinia biloba Raddi for use in the phytoremediation of water contaminated with lead

Zevallosa¹,

Salvatierra²,

Loureiro³

et al. 2018

dwt

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Plant-based systems for the treatment of contaminated environments (phytoremediation) have been proved to be highly efficient in removing pollutants, especially heavy metals. However, in strictly aquatic and high-flow treatment systems, the use of free floating plants could be more adequate. For a treatment system based on phytoremediation strategies to be feasible and sustainable, it is essential that the plants used are not only efficient in pollutants removal, but also abundant in the region, easily accessible, and do not require special culture conditions. In this work, we evaluate the capacity of four different autochthonous macrophytes obtained from the Paraná river (Argentina) to adapt and reproduce without any additional nutrient supply or temperature special conditions (laboratory «indoor» environment). Only those specimens that doubled their biomass in a two-week period without any visual signs of deterioration (loss of turgor, chlorosis and/or necrosis of leaves) were considered for further analysis. From different pre-selected species, only Salvinia biloba Raddi showed a wide capacity to adapt and reproduce under these conditions. Moreover, the ability to remove lead (Pb 2+) by S. bilobawas evaluated in water samples contaminated with three metal concentrations (4.8 ± 0.3, 9.1 ± 0.4 and 19.6 ± 0.5 mg/L) at different exposure times (0-24 h), showing a high efficiency in the pollutant elimination. A compartmentalization analysis indicates that surface adsorption was the predominant mechanism for Pb 2+ removal at the first 24 h. Finally, the bioconcentration factor (BCF) was calculated at the end of the exposure time,reflecting both hyperaccumulation capacity and high metal tolerance by this plant. Our results suggest that incorporation of S. biloba in wastewater treatment systems could be a successful strategy to efficiently remove heavy metals by bioremediation processes.

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Section: Adsorption Isothermssupporting

confidence: 84%

Section: Adsorption Isothermsmentioning

confidence: 99%

Evaluation of the autochthonous free-floating macrophyte Salvinia biloba Raddi for use in the phytoremediation of water contaminated with lead

Zevallosa¹,

Salvatierra²,

Loureiro³

et al. 2018

dwt

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“…Thilakar et al (2012) suggest that S. natans be classified as a hyperaccumulating macrophyte, supporting high amounts of toxic metals in its biomass, and can be used for the remediation of aquatic environments. This relationship may be associated with the presence of different functional groups such as phosphonates, carboxylates, amide and hydroxide groups in the S. natans biomass, important constituents that allow for binding with trace metals (Lima et al, 2016).…”

Section: Resultsmentioning

confidence: 99%

Copper accumulation by the root and leaf biomass of Salvinia natans (L.) All. (Salviniaceae)

et al. 2021

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Aquatic plants are often exposed to metal contamination. The study evaluated the bioaccumulation of copper (Cu) ions in aqueous solution by the biomass of leaves and roots of the macrophyte Salvinia natans. Plants of S. natans were submitted to culture solutions with different concentrations of Cu ions, evaluated at intervals of seven days. The leaf and root samples were separately subjected to atomic absorption spectroscopy with flame atomization to assess the concentration of copper accumulated in its biomass. The results demonstrated a pattern of accumulation dependent on the concentration of the metal in the culture medium and the time of exposure of the plants to the contamination. The accumulation was greater in the biomass of the roots when compared to the leaves. Throughout the experiment, toxicity symptoms were observed in the morphology of plants subjected to all copper concentrations, demonstrating the macrophyte's viability for bioindicating the toxicity of this metal in aquatic environments. A high accumulation of copper ions was obtained both in the biomass of the roots and leaves of the plants, confirming their potential bioaccumulator of Cu. The analysis of biomass suggests an important characteristic of metal compartmentalization by the plant, associating the absorption by the roots and the possible transfer to the leaves. In general, our results show that S. natans is an organism with a potential bioindicator and bioaccumulator of Cu and consists of a viable cost-effective option for phytoremediation of aquatic environments contaminated by metals

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“…A isoterma de equilíbrio do cromo apresentou uma tendência favorável (McCabe et al, 1993), indicando que quantidades elevadas de soluto são adsorvidas mesmo em baixas concentrações na solução, enquanto para íons Zn não há uma curva bem definida. Este resultado pode estar relacionado à competitividade pelos sítios ativos entre os íons presentes na solução, ou seja, pode estar havendo adsorção e dessorção do íon de menor afinidade, afetando o equilíbrio na superfície do resíduo (Lima et al, 2016).…”

Section: Equilíbrio De Adsorçãounclassified

EQUILÍBRIO DE ADSORÇÃO DE CROMO E ZINCO EM RESÍDUO DA EXTRAÇÃO DE ALGINATO DA ALGA MARROM Sargassum filipendula

Queiroz¹,

Costa²,

Silva³

et al. 2017

Blucher Chemical Engineering Proceedings

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STUDY OF BINARY AND SINGLE BIOSORPTION BY THE FLOATING AQUATIC MACROPHYTE Salvinia natans

Cited by 20 publications

References 27 publications

Evaluation of the autochthonous free-floating macrophyte Salvinia biloba Raddi for use in the phytoremediation of water contaminated with lead

Evaluation of the autochthonous free-floating macrophyte Salvinia biloba Raddi for use in the phytoremediation of water contaminated with lead

Copper accumulation by the root and leaf biomass of Salvinia natans (L.) All. (Salviniaceae)

EQUILÍBRIO DE ADSORÇÃO DE CROMO E ZINCO EM RESÍDUO DA EXTRAÇÃO DE ALGINATO DA ALGA MARROM Sargassum filipendula

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