Removal of heavy metal from polluted river water using aquatic macrophytes Salvinia sp

Espinoza‐Quiñones, Fernando Rodolfo; Zacarkim, Carlos Eduardo; Palácio, Soraya Moreno; Obregón, C. L.; Zenatti, Dilcemara Cristina; Galante, Raquel Manozzo; Rossi, N.; Rossi, Federico; Pereira, Ivonete; Welter, R. A.; Rizzutto, M. A.

doi:10.1590/s0103-97332005000500005

Cited by 43 publications

(31 citation statements)

References 4 publications

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“…Efeitos da toxicidade do zinco em folhas de Salvinia auriculata... -Quiñones et al (2005) estudaram a remoção de macro e micronutrientes por Salvinia sp. em ambiente natural e constataram que a planta acumulou, na matéria seca, em 18 dias de exposição em água com 5,8 µg L -1 desse metal, 6,8 µg g -1 de zinco.…”

Section: Resultsunclassified

Efeitos da toxicidade do zinco em folhas de Salvinia auriculata cultivadas em solução nutritiva

Wolff¹,

Assis

Pereira³

et al. 2009

Planta daninha

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RESUMO -A macrófita aquática Salvinia auriculata tem sido utilizada em vários programas de monitoramento em corpos d'água passíveis de eutrofização, sendo considerada uma planta bioindicadora. Contudo, sabe-se que a salvínia também tem um potencial fitorremediador, acumulando em seus tecidos concentrações consideráveis de poluentes. Com isso, o objetivo deste trabalho foi avaliar o potencial fitorremediador e bioindicador dessa planta, avaliando as características morfológicas da salvínia quando submetida a doses excessivas de zinco (Zn), bem como o teor desse metal acumulado em seus tecidos. Os indivíduos foram coletados em águas livres de contaminação e cultivados sob condições controladas, em vasos com solução nutritiva, em casa de vegetação, e submetidos aos tratamentos com zinco na forma de ZnSO 4 . 7H 2 O, nas seguintes concentrações: 0; 2,5; 5,0; 7,5; e 10,0 mg L -1 . As alterações morfológicas foram observadas diariamente e, após dez dias de exposição dos vegetais ao zinco, procedeu-se à colheita das plantas. As plantas colhidas foram lavadas, secas, pesadas, moídas e digeridas em solução com ácido nítrico e ácido perclórico, obtendo-se extratos para determinação dos teores de zinco por espectrofotometria de absorção atômica. Os resultados indicaram que S. auriculata apresentou danos morfológicos, com o desenvolvimento de lesões e necroses marginais nas folhas em concentrações de zinco na solução superiores à permitida pela legislação, porém não diferiram no que se refere ao crescimento populacional. Em relação ao acúmulo, a absorção de zinco pelas plantas aumentou proporcionalmente com a concentração do metal em solução. O zinco, quando em concentrações elevadas, tornou-se tóxico às plantas, sendo as alterações morfológicas de plantas de S. auriculata de fácil detecção, podendo ser utilizadas no biomonitoramento de ecossistemas aquáticos contaminados com zinco.Palavras-chave: bioindicador, fitorremediação, macrófita aquática.ABSTRACT -The aquatic macrophyte Salvinia auriculata has been used in several monitoring programs in bodies of water susceptible to eutrophication, being thus considered a bioindicator. However, salvinia is also known to have phytoremediating potential, accumulating considerable concentrations of pollutants in its tissues. Thus, this work aimed to evaluate the potential of this plant as a phytoremediator and bioindicator by analyzing its morphologic characteristics when submitted to Zinc (Zn) overdoses, as well as to determine the level of this metal accumulated in its tissues. The individuals were collected in water bodies free from contamination and cultivated in vases, using a nutrition solution, under controlled greenhouse conditions and submitted to treatments with Zinc in the form of ZnSO 4 . 7H 2 O at the following concentrations: 0; 2.5; 5.0; 7.5 and 10.0 mg L -1 . The morphologic alterations were observed daily and after ten days of exposure of the plants to Zinc, the number of individuals per treatment was counted. The plants were then harvested, washed, dried, weighed, gr...

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Section: Resultsunclassified

Efeitos da toxicidade do zinco em folhas de Salvinia auriculata cultivadas em solução nutritiva

Wolff¹,

Assis

Pereira³

et al. 2009

Planta daninha

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show abstract

“…A dry-biomass digestion was carried out by the addition of 5.0 ml (65%) HNO 3 and 0.5 ml (30%) H 2 O 2 onto 0.5 g of leaves or roots in digestion glassware and by heating on a hot plate (Pettersson and Olsson 1998;Salvador et al 2004). Finally, de-ionized water was added up into digested sample to reach a total volume of 10 ml and it was stored (Salvador et al 2004;Espinoza-Quiñones et al 2005).…”

Section: Sampling and Storage Of Samplesmentioning

confidence: 99%

Chromium ions phytoaccumulation by three floating aquatic macrophytes from a nutrient medium

Espinoza‐Quiñones

Silva

Rizzutto

et al. 2008

World J Microbiol Biotechnol

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In the present work, the trivalent and hexavalent chromium phytoaccumulation by three living free floating aquatic macrophytes Salvinia auriculata, Pistia stratiotes, and Eicchornia crassipes was investigated in greenhouse. These plants were grown in hydroponic solutions supplied with non-toxic Cr 3? and Cr 6? chromium concentrations, performing six collections of nutrient media and plants in time from a batch system. The total chromium concentrations into Cr-doped hydroponic media and dry roots and aerial parts were assayed, by using the Synchrotron radiation X-ray fluorescence technique. The aquatic plant-based chromium removal data were described by using a nonstructural kinetic model, obtaining different bioaccumulation rate, ranging from 0.015 to 0.837 l mg -1 d -1 . The Cr 3? removal efficiency was about 90%, 50%, and 90% for the E. crassipes, P. stratiotes, and S. auriculata, respectively; while it was rather different for Cr 6? one, with values about 50%, 70%, and 90% for the E. crassipes, P. stratiotes, and S. auriculata.

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“…These pollutants cause serious problems and risks to the environment and man himself (Shanbehzadeh et al, 2014;Espenoza-Quinones et al, 2005). Water resources are among the most critical resources and the importance of water resources, particularly surface water (rivers), in meeting the water need of humans, animals and industries underscores the need to protect them against contaminations (Shanbehzadeh et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Physicochemical, microbiological and heavy metal studies on water samples and bacteria obtained from Dandaru River in Ibadan, South-western Nigeri

Adekanmbi¹,

Falodun²

2015

Afr. J. Microbiol. Res.

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The physicochemical, microbiological and heavy metal studies of water samples and bacteria obtained from the Dandaru River were investigated. Water samples were collected from six different sampling points along the course of the river and analysed using standard procedures. The physicochemical parameters showed that the water samples at point 5 had the highest value for all the parameters except Total Dissolved Solids. The heavy metal analysis revealed that the mean concentration of zinc, lead, chromium and iron were highest at point 5; 2.11, 0.02, 0.04 and 0.54 mg/l respectively, while that of copper and manganese concentration was highest at point 4 (0.59 and 0.41 mg/l respectively). The total heterotrophic bacteria count was between 3.6 -64.0 ×10 1 cfu/ml, with point 3 having the least value (3.6×10 1 cfu/ml); while the coliform count using Most Probable Number (MPN) tube method ranged from 350 -≥1600 MPN index/100 ml. The bacteria obtained belonged to the genera Bacillus, Enterobacter, Escherichia, Pseudomonas and Staphylococcus. On exposure to increasing concentration of six heavy metals, 47.62% of the total bacteria obtained were observed to be growing at 500 µg/ml for all the six metals employed in this study, while the others showed varying degree of tolerance to the metals.

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Removal of heavy metal from polluted river water using aquatic macrophytes Salvinia sp

Cited by 43 publications

References 4 publications

Efeitos da toxicidade do zinco em folhas de Salvinia auriculata cultivadas em solução nutritiva

Efeitos da toxicidade do zinco em folhas de Salvinia auriculata cultivadas em solução nutritiva

Chromium ions phytoaccumulation by three floating aquatic macrophytes from a nutrient medium

Physicochemical, microbiological and heavy metal studies on water samples and bacteria obtained from Dandaru River in Ibadan, South-western Nigeri

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