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Removal of Lead from Contaminated Soils by Typha Angustifolia |
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| Authors: | Panich-Pat T Pokethitiyook P Kruatrachue M Upatham E S Srinives P Lanza G R |
| Institution: | 1. Department of Biology, Faculty of Science, Mahidol University, Bangkok, Thailand 2. Mahidol University International College, Nakhon Pathom, Thailand 3. Faculty of Science, Burapha University, Chonburi, Thailand 4. Department of Agronomy, Faculty of Agriculture, Kasetsart University, Bangkok, Thailand 5. Environmental Sciences Program, University of Massachusetts, Amherst, MA, U.S.A. |
| Abstract: | A greenhouse study was demonstrated for removal of lead (Pb) from contaminated soil by the narrow — leaved cattail, Typha angustifolia. The plants were grown in sandy loam soil containing various concentrations of Pb(NO3)2 (53.3, 106.7, 160, 213.3, and 266.7 mg Pb kg-1 soil). Most lead was accumulated in roots and then transported to leaves. In soil contaminated with 266.7 mg kg-1 of lead, the plants accumulated 7492.6 mg Pb kg-1 dry weight in the roots and 167 mg Pb kg-1 dry weight in the leaves. Yet, no growth retardation from lead was detected. T. angustifolia has high potential as a plant to clean up lead contaminated soil due to its vigorous growth, high biomass productivity, and because it is a perennial in nature. Further work is required to study on the iron plaque formation and its role in metal immobilization. |
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