article · Advanced materials research
Contamination of water by heavy metals is a major environmental problem in modern world as pollutants enter aquatic systems through various means such as effluent discharge, industrial, urban and agricultural run-off. This study is evaluated the bioaccumulation potentials of Eichornia crassipe (Water hyacinth) on some selected heavy metals in effluent impacted Wupa River. The result shows Water Cadmium (0.10 ± 0.01-0.12 ± 0.00 mg/L), Copper (0.01 ± 0.01-0.04 ± 0.02 mg/L), Iron (0.57 ± 0.23-0.83 ± 0.26mg/L), Nickel (0.11± 0.01-0.15±0.10 mg/L), Lead (0.98 ± 0.86-1.04 ± 0.64 mg/L), Zinc (0.02 ± 0.00-0.03 ± 0.00 mg/L). Sediment heavy metal Copper mean (0.13 ± 0.03-0.28 ± 0.06mg/L), Nickel (0.02 ± 0.02-0.18 ± 0.12mg/L), Zinc (0.03 ± 0.04-0.05 ± 0.04mg/L), Cadmium (0.004 ± 0.05-0.01 ± 0.01mg/L), Lead (5.09 ± 5.38-5.69 ± 1.61mg/L), Iron (2.00 ± 1.77 to 5.65 ± 2.03 mg/L). Molecular identification reveals high percentage identities ranging from 88.69% to 98.74% with known chloroplast sequences of E. crassipes . Water hyacinth root had high bioconcentration factor metals such as iron and copper while the leaves had highest BCF in Lead. The heavy metal removal efficiency of iron and copper was significantly low (p<0.05) in the root of water hyacinth when compared to the leave and stem of same plant. While the lead heavy metal removal was significantly (p<0.05) low in the stem when compared to the root and leaves of water hyacinth.
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DOI: 10.4028/p-e6zdqf
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