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Title: Phytoremediation of 137Cs from low level nuclear waste using Catharanthus roseus
Authors: Fulekar, M H
Singh, Anamika
Thorat, Vidya
Kaushik, C P
Eapen, Susan
Keywords: Radionuclides;Low level nuclear waste;Phytoremediation;Potential;Catharanthus roseus
Issue Date: Jul-2010
Publisher: CSIR
Abstract: Remediation of radionuclides has been carried out using the phytoremediation technology. The green plants have been screened for the uptake potential of radionuclide and found that Catharanthus roseus has the high potential for radionuclides in particular 137Cs. Low level nuclear waste (LLNW) collected from effluent treatment plant, BARC has been characterized for physico-chemical and the presence of traces of radionuclides. LLNW was spiked with 3.7×104kBqL-1 activity level of 137Cs. The plants of C. roseus were grown in (i) LLNW, (ii) 137Cs spiked LLNW and (iii) with the control. The radio activities were measured in the solution at the intervals of 0, 1, 2, 3, 6, 8 and 15 days in triplicate set of the experiment. The plants were harvested after the growth. The depletion of 137Cs in LLNW was found to be 19, 21, 24, 38, 60 and 76% at intervals of 1, 2, 3, 6, 8 and 15 days, respectively. The bio-accumulation of 137Cs has been measured in the roots and shoots of the harvested plants. The activity of 137Cs was found higher in shoots (998 kBq g-1 dw) as compared to the roots (735 kBq g-1 dw). The uptake of radionuclide-137Cs, bio-accumulation in the shoot via the active transport from the root, shows the high efficiency and potentiality of C. roseus for the remediation of radionuclide. The bio-accumulation of 137Cs in the shoot will remediate the radionuclide contamination from LLNW. C. roseus can also be made applicable for effective remediation of radionuclides present in the LLNW.
Page(s): 516-519
ISSN: 0975-1041 (Online); 0019-5596 (Print)
Appears in Collections:IJPAP Vol.48(07) [July 2010]

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