Potential of Vetiver Grass for the Removal of Contaminants from Soil
摘要
This research paper delves into the efficacy of vetiver grass as an environmental cleanup measure for removing various contaminants, such as iron (Fe3+), aluminum (Al3+), and pesticides, from soil. Iron and aluminum pollution in soil is a prevalent issue, stemming from various anthropogenic and natural sources, posing significant environmental risks. Through meticulously designed experiments and analyses, this study aims to elucidate the mechanisms by which vetiver grass effectively absorbs, immobilizes, and degrades contaminants like (Fe3+), (Al3+), and pesticides. Key factors such as soil characteristics, contaminant concentrations, and optimal growth conditions of vetiver grass will be systematically explored to maximize removal efficiency. The contaminant removal and the tolerance of contaminants by the plant were studied by measuring the uptake by the roots and the shoot of the vetiver plant, and by the residual concentrations in soil. By uncovering the specific removal efficiency of vetiver grass for Fe3+, Al3+, and pesticides, this research endeavors to provide practical insights into harnessing this eco-friendly approach. The experimental results demonstrated that S1 achieved removal efficiencies of 55.87% for Fe3⁺ and 56.52% for Al3⁺. In comparison, S2 exhibited a slightly higher Fe3⁺ removal efficiency at 60.71%, and for Al3⁺ at 16.33%.The plant exhibited greater accumulation of contaminants in the roots compared to shoots, indicating a primary mechanism of rhizofiltration and phytostabilization. These findings confirm vetiver grass as an effective, eco-friendly solution for remediating metal and pesticide-contaminated soils, offering practical applications for sustainable land management.