Evaluation of metal contamination and phytoremediation potential of aquatic macrophytes of East Kolkata Wetlands, India

Amina Khatun; Sandipan Pal; Aloke Kumar Mukherjee; Palas Samanta; Subinoy Mondal; Debraj Kole; Priyanka Chandra; Apurba Ratan Ghosh

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자료유형: 학술저널

저자정보: Amina Khatun (University of Burdwan) Sandipan Pal (Aghorekamini Prakashchandra Mahavidyalaya) Aloke Kumar Mukherjee (Durgapur Government College) Palas Samanta (University of Burdwan) Subinoy Mondal (University of Burdwan) Debraj Kole (University of Burdwan) Priyanka Chandra (University of Burdwan) Apurba Ratan Ghosh (University of Burdwan)

저널정보: 환경독성보건학회 Environmental Analysis Health and Toxicology Environmental Health and Toxicology Vol.31

발행연도: 2016.12

수록면: 126 - 132 (7page)

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Objectives The present study analyzes metal contamination in sediment of the East Kolkata Wetlands, a Ramsar site, which is receiving a huge amount of domestic and industrial wastewater from surrounding areas. The subsequent uptake and accumulation of metals in different macrophytes are also examined in regard to their phytoremediation potential.
Methods Metals like cadmium (Cd), copper (Cu), manganese (Mn), and lead (Pb) were estimated in sediment, water and different parts of the macrophytes Colocasia esculenta and Scirpus articulatus.
Results The concentration of metals in sediment were, from highest to lowest, Mn (205.0±65.5 mg/kg)>Cu (29.9±10.2 mg/kg)>Pb (22.7±10.3 mg/kg)>Cd (3.7±2.2 mg/kg). The phytoaccumulation tendency of these metals showed similar trends in both native aquatic macrophyte species. The rate of accumulation of metals in roots was higher than in shoots. There were strong positive correlations (p <0.001) between soil organic carbon (OC) percentage and Mn (r =0.771), and sediment OC percentage and Pb (r=0.832). Cation exchange capacity (CEC) also showed a positive correlation (p <0.001) with Cu (r=0.721), Mn (r=0.713), and Pb (r=0.788), while correlations between sediment OC percentage and Cu (r=0.628), sediment OC percentage and Cd (r=0.559), and CEC and Cd (r=0.625) were significant at the p <0.05 level.
Conclusions Bioaccumulation factor and translocation factors of these two plants revealed that S. articulatus was comparatively more efficient for phytoremediation, whereas phytostabilization potential was higher in C. esculenta .

#East Kolkata Wetlands #Metals #Phytoremediation #Colocasia esculenta #Scirpus articulatus

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