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Alvarado, Sandra; Guédez, Magdiel; Lué-Merú, Marcó P.; Nelson, Graterol; Alvaro, Anzalone; Jesús, Arroyo C.; Gyula, Záray
Bioresource technology, 11/2008, Letnik: 99, Številka: 17Journal Article
In this study the removal of arsenic by the Water Hyacinth ( Eichhornia crassipes) and Lesser Duckweed ( Lemna minor) was monitored under a concentration of 0.15 mg L −1 of the element. Plant densities were 1 kg/m 2 for Lesser Duckweed and 4 kg/m 2 for Water Hyacinth on a wet basis. The arsenic was determined in foliar tissue and water samples by hydride generation atomic absorption spectroscopy. The element was monitored as a function of time during 21 days. No significant differences were found in the bioaccumulation capability of both species. The removal rate for L. minor was 140 mg As/ha d with a removal recovery of 5%. The Water Hyacinth had a removal rate of 600 mg As/ha d and a removal recovery of 18%, under the conditions of the assay. The removal efficiency of Water Hyacinth was higher due to the biomass production and the more favorable climatic conditions. This specie represents a reliable alternative for arsenic bioremediation in waters.
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Leto | Faktor vpliva | Izdaja | Kategorija | Razvrstitev | ||||
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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in: SICRIS
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