RT info:eu-repo/semantics/article
T1 Removal of Chromium (III) and reduction in toxicity in a primary tannery effluent using two floating macrophytes
A1 López Arias, Tomás R.
A1 Franco, Deidamia Mercedes
A1 Medina, Leónida
A1 Benítez, César Manuel
A1 Villagra, Verónica
A1 McGahan, Shaun
A1 Duré, Giselle Mariza
A1 Kurita Oyamada, Hajime G.
A2 Universidad Nacional de Asunción. Facultad de Ciencias Exactas y Naturales
AB Trivalent chromium (Cr(III)) is a contaminant with toxic activity. Its presence in waters and soils is usually related to industrial activities such as tanneries. The aim of this study was to compare the removal of Cr(III) in hydroponic solutions and tannery effluents using two floating macrophytes: Salvinia auriculata and Eichhornia crassipes. First, to determine the chromium removal capacity in solution and the bioaccumulation factor (BAF) in tissues of each plant, experiments were set up with contaminated solutions with Cr(III) concentrations of 2, 5, 10, 20, and 40 mg/L. Subsequently, both plant species were exposed to a primary tannery effluent contaminated with 12 mg/L of Cr(III) in order to study the removal capacity of organic and inorganic matter, as well as the acute toxicity in the water flea (Daphnia magna) and genotoxicity in zebrafish (Danio rerio). Tests carried out on nutrient solutions revealed that both plants have a high capacity for removing Cr(III) in solution. The BAF in tissues was higher in E. crassipes compared to S. auriculata. In the experiments with a tannery effluent, both species presented low nutrient and organic matter removal efficiency, but they showed good Cr(III) removal capacity, with average reduction values of 57% for S. auriculata and 54% for E. crassipes after 72 h of exposure. E. crassipes contributed most to the reduction in acute toxicity in D. magna, while S. auriculata did not show a similar effect. However, both plant species managed to reduce the genotoxicity marker in D. rerio when compared with the initial effluent and the control.
PB Multidisciplinary Digital Publishing Institute
YR 2024
FD 2024-02-16
LK http://hdl.handle.net/20.500.14066/4410
UL http://hdl.handle.net/20.500.14066/4410
LA eng
NO López Arias, T. R., Franco, D., Medina, L., Benítez, C., Villagra, V., McGahan, S., Duré, G.M., & Kurita Oyamada, H. G. (2024). Removal of Chromium (III) and reduction in toxicity in a primary tannery effluent using two floating macrophytes. Toxics, 12(2), Artículo 152. https://doi.org/ 10.3390/toxics12020152
NO Correspondence: tlopez@facen.una.py
NO This article belongs to the Special Issue New Strategies for Detection and Bioremediation of Contaminated Water and Soil.
NO Consejo Nacional de Ciencia y Tecnología
DS MINDS@UW
RD 23-nov-2024