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Title: Phytostabilization potential of Pb mine tailings by two grass species, Thysanolaena maxima and Vetiveria zizanioides
Authors: Weeradej Meeinkuirt
Maleeya Kruatrachue
Phanwimol Tanhan
Rattanawat Chaiyarat
Prayad Pokethitiyook
Mahidol University
Kasetsart University
Keywords: Environmental Science
Issue Date: 1-Oct-2013
Citation: Water, Air, and Soil Pollution. Vol.224, No.10 (2013)
Abstract: Pot and field experiments were conducted to elucidate the phytostabilization potential of two grass species (Thysanolaena maxima and Vetiveria zizanioides) with respect to lead (Pb) tailing soil. Three fertilizers (Osmocote® fertilizer, cow manure, and organic fertilizer) were used to improve the physicochemical properties of tailing soil. V. zizanioides treated with organic fertilizer and cow manure showed the highest biomass (14.0±2.6 and 10.5±2.6 g per plant, respectively) and the highest Pb uptake in the organic fertilizer treatment (T. maxima, 413.3 μg per plant; V. zizanioides, 519.5 μg per plant) in the pot study, whereas in field trials, T. maxima attained the best performances of dry biomass production (217.0 ±57.9 g per plant) and Pb uptake (32.1mg per plant) in the Osmocote® treatment. In addition, both grasses showed low translocation factor (<1) values and bioconcentration coefficients for root (>1). During a 1-year field trial, T. maxima also produced the longest shoot (103.9±29.7 cm), followed by V. zizanioides (70.6±16.8 cm), in Osmocote® treatment. Both grass species showed potential as excluder plants suitable for phytostabilization applications in Pbcontaminated areas. © Springer Science+Business Media Dordrecht 2013.
ISSN: 15732932
Appears in Collections:Scopus 2011-2015

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