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- Title
Phytostabilization Potential of Pb Mine Tailings by Two Grass Species, Thysanolaena maxima and Vetiveria zizanioides.
- Authors
Meeinkuirt, Weeradej; Kruatrachue, Maleeya; Tanhan, Phanwimol; Chaiyarat, Rattanawat; Pokethitiyook, Prayad
- 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 (32.1 mg 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 Pb-contaminated areas.
- Subjects
RESEARCH methodology; PHYTOREMEDIATION; VETIVER; CATTLE manure; ORGANIC fertilizers; GROUP 14 elements; BIOMASS
- Publication
Water, Air & Soil Pollution, 2013, Vol 224, Issue 10, p1
- ISSN
0049-6979
- Publication type
Article
- DOI
10.1007/s11270-013-1750-7