Economic incentive for applying vetiver grass to remediate lead, copper and zinc contaminated soils.
Int J Phytoremediation
; 13(1): 47-60, 2011 Jan.
Article
en En
| MEDLINE
| ID: mdl-21598767
ABSTRACT
The application of vetiver grass (Chrysopogon zizaniodes) for phytoremediation of heavy metal contaminated soils can be promoted by economic return through essential oil production. Four levels of lead (0, 500, 2000, and 8000 mg kg(-1) dry soil), copper (0, 100, 400, and 1600 mg kg(-1) dry soil) and zinc (0, 400, 1600, and 6400 mg kg(-1) dry soil) were used to study their effects on vetiver growth, essential oil composition and yield. This study also investigated the effect of nitrogen concentrations on vetiver oil yield. Vetiver accumulated high concentrations of Pb, Cu and Zn in roots (3246, 754 and 2666 mg kg(-1), respectively) and small amounts of contaminants in shoots (327, 55, and 642 mg kg(-1), respectively). Oil content and yield were not affected at low and moderate concentrations of Cu and Zn. Only the application of Pb had a significant detrimental effect on oil composition. Extraction of vetiver essential oils by hydrodistillation produced heavy metal free products. High level of nitrogen reduced oil yields. Results show that phytoremediation of Cu and Zn contaminated soils by vetiver can generate revenue from the commercialization of oil extracts.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Suelo
/
Contaminantes del Suelo
/
Metales Pesados
/
Chrysopogon
Tipo de estudio:
Health_economic_evaluation
Idioma:
En
Revista:
Int J Phytoremediation
Año:
2011
Tipo del documento:
Article
País de afiliación:
Australia