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ASSESSING PLANTS FOR PHYTOREMEDIATION OF ARSENICCONTAMINATED WATER
MARIA TERESA ALARCON HERRERA
MARIO ALBERTO OLMOS MARQUEZ
MARIA CECILIA VALLES ARAGON
Acceso Abierto
Sin Derechos Reservados
Phytoremediation
traslocation factor
Phytoremediation is an innovative technology that uses plants in order to remediate polluted water and soil. A 10 week study in flowerpots was performed in order to determine the arsenic (As) removal potential of Shoenoplectus americanus (Juncos), Eleocharis macrostachya (Spikerush pálida) and Baccharis salicifolia (Chilca) and to evaluate their tolerance to increasing doses of As. The experiment used five different treatments with distinct As concentrations (1, 2, 3, 4 and 5 mg/L) and a control (faucet water) to determine the acclimatization capacity of the species to the different concentrations. The number of individuals and their height were determined during the experiment. The values for the factors of translocation, accumulation and enrichment were obtained at the end of the experiment; the maximum values for these factors were, respectively, 1.86, 92.13 and 1.63 for E. macrostachya, 1.73, 59.74 and 0.56 for S. americanus and 8.96, 27.94 and 6.72 for B. salicifolia. The maximum growth value belonged to the S americanus. The maximum concentration of As in water tolerated by E. macrostachya and B. salicifolia was 2 mg/L. S. americanus showed the highest As accumulation capacity and the greatest tolerance in all of the tested concentrations. B. salicifolia and E. macrostachya proved to be translocator plants and S. americanus was confirmed to be a stabilizer plant with a high potential for phytostabilization and rhizofiltration techniques.
2012
Memoria de congreso
Inglés
OTRAS
Versión revisada
submittedVersion - Versión revisada
Aparece en las colecciones: Artículos de Congresos

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