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Phytoremediation of Toxic Metal Contaminated Soil

Dr. M. Wahid-U-Z- Zaman
Professor
Department of Agricultural Chemistry, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh,

Abstract/ Executive Summary:

The experiment was carried out in the laboratory and net house of the Department of Agricultural Chemistry, Bangladesh Agricultural University, Mymensingh, during 2011-2012 with a view to identifying the individual and combined toxicity of heavy metals like Pb, Cr tolerant jute, kenaf and mesta varieties and accumulation of these toxic substances into the plant at germination stage. Six treatments were considered viz. 0, 20, 40, 60 and 120 mgL-1 for Pb and Cr separately and (0, 0), (60, 60), (100,100), (120,120) for combination of both Pb and Cr. The experiment was carried out in Completely Randomized Design with three replications. Two jute; two kenaf and one mesta varieties were considered for the present study. Increased level of Cr and combination of Pb and Cr in petridish culture significantly reduced the germination percentage and primary growth parameters. In case Pb, germination percentage and growth parameters were also decreased with the increase concentration of Pb, but the reduction was less than Cr toxicity. Almost all the varieties were able to tolerate up to 120mgL-1 Pb and Cr. From the chemical analyses, better performance in respect of accumulation of Pb and Cr were observed in kenaf HC -95 in both single and combined treatment compare to kenaf (var.HC-3) and mesta (var. samu-93) varieties. Considering all of the parameters, it was observed that kenaf (var. HC-95) had high tolerance of Pb and Cr. The findings of the research may be helpful for selecting jute, kenaf and mesta varieties for further phytoremrdiation study. In second step resistant varieties of kenaf and mesta will be grown on Pb and Cr contaminated soil.

Keywords: Jute, Toxic metal, Contaminate soil

Location: BAU, Mymensingh

Start Date: 00-00-2011

End Date: 00-00-2012

Program Area: Crop-Soil-Water Management

Commodity: Contamination of soil

Objectives:

To identify the toxic metal contaminated soil through phytoremediation.

Methodology:

The research program was divided into two steps. First step was the tolerance of different jute, kenaf and mesta varieties against Pb and Cr toxicity at germination stage. The experiment was carried out in the laboratory and net house of the Department of Agricultural Chemistry, Bangladesh Agricultural University, Mymensingh, during 2011-2012 with a view to identifying the individual and combined toxicity of heavy metals like Pb, Cr tolerant jute, kenaf and mesta varieties and accumulation of these toxic substances into the plant at germination stage. Six treatments were considered viz. 0, 20, 40, 60 and 120 mgL-1 for Pb and Cr separately and (0, 0), (60, 60), (100,100), (120,120) for combination of both Pb and Cr. The experiment was carried out in Completely Randomized Design with three replications. Two jute; two kenaf and one mesta varieties were considered for the present study.

Source of Information: BAU Research proceedings, Vol.23, 2013, PP.44-45

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The study found that Increased level of Cr and combination of Pb and Cr in petridish culture significantly reduced the germination percentage and primary growth parameters. In case Pb, germination percentage and growth parameters were also decreased with the increase concentration of Pb, but the reduction was less than Cr toxicity. Almost all the varieties were able to tolerate up to 120 mgL-1 Pb and Cr. From the chemical analyses, better performance in respect of accumulation of Pb and Cr were observed in kenaf HC -95 in both single and combined treatment compare to kenaf (var.HC-3) and mesta (var. samu-93) varieties. Considering all of the parameters, it was observed that kenaf (var. HC-95) had high tolerance of Pb and Cr. The findings of the research may be helpful for selecting jute, kenaf and mesta varieties for further phytoremidiation study. In second step resistant varieties of kenaf and mesta will be grown on Pb and Cr contaminated soil. Increased level of Cr and combination of Pb and Cr in petridish culture significantly reduced the germination percentage and primary growth parameters. In case Pb, germination percentage and growth parameters were also decreased with the increase concentration of Pb, but the reduction was less than Cr toxicity

Knowledge Management: Report/Proceedings