Abstract
In present work, effect of two types of rhizobacteria was investigated on Scirpus mucronatus plant grown in contaminated soil spiked with 1 ppm Hg and 100 ppm Pb using phytoremediation technique. The concentrations of Hg and Pb in root and shoot of Scirpus mucronatus plant were determined on 1th, 7th, 14th, 28th and 42th days after enrichment by bacteria using Inductively Coupled Plasma Mass Spectrometry (ICP-MS). To evaluate statistical differences in the Hg and Pb concentrations, the one-way ANOVA test was used. There were statistically significant differences between Hg and Pb concentrations between samples of control, bacteria 5 and bacteria 60. The results were demonstrated that these two bacterial inoculums namely Brevundimonas diminuta and Alcaligenes faecalis were known as plant-grown promoting rhizobacteria and they can increase the heavy metal uptake from soil contaminated.
Highlights
Heavy metals are among the most common contaminants in the environment
The effect of two bacterial inoculums namely Brevundimonas diminuta and Alcaligenes faecalis were investigated in Hg and Pb contaminated soil using phytoremediation method
The Scirpus mucronatus plant was utilized in present work
Summary
Heavy metals are among the most common contaminants in the environment. Of those, two of the most common in the environment are lead (Pb) and mercury (Hg) which are sourced from such industries as paint and battery manufacture and lead smelting. Inorganic Pb and Hg is inhibitor enzyme which are harmful to the nervous system If these metals enter the environment in an ionic form, their most toxic form, they can enter the human body through drinking water, food or air [1]. Phytoremediation uses plants to degrade, stabilize, and remove contaminant from the soil [2]. The Scirpus mucronatus is a monocot weed in the Cyperaceae family This plant is known by the common name of ricefield bulrush. It grows in moist and wet terrestrial habitat, and in shallow water. The leaves take the form of sheaths wrapped around the base of stem, but they generally do not have blades [8]. This plant is planted in Tasik Chini Wetland, Pahang, Malaysia
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