Foliar uptake of cesium from the water column by aquatic macrophytes

Pinder, J.E.; Hinton, Thomas G.; Whicker, F.W.

doi:10.1016/j.jenvrad.2005.05.005

Cited by 43 publications

(38 citation statements)

References 46 publications

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“…Specific transporters for nonessential metal ions do not exist in plants, and the transport systems for essential ions mediated the transport of Cs across a membrane. Additionally, most of the chemical features of Cs are analogous to those of potassium (Pinder et al, 2006). Thus, Cs is absorbed easily by plants (Dabbagh et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

<sup>133</sup>Cesium Uptake by 10 Ornamental Plant Species Cultivated Under Hydroponic Conditions

Ikeura¹,

Narishima²,

Tamaki³

2014

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We focused on the Cs uptake capacities of ornamental flowers. Ornamentals have the advantage of beautifying contaminated environments, and this may have therapeutic effects for individuals, especially in disaster areas. Furthermore, the use of ornamental plants will reduce the risk of pollutants entering the food chain. We hypothesized a strong correlation between high aboveground biomass and high Cs uptake in plants. We assessed the potential of 10 ornamental plant species for remediation of 133 Cesium in hydroponic solutions. Sunflower, rapeseed, and cosmos took up larger amounts of 133 Cs and showed better growth rates than the other 7 species. When these 3 species were exposed to 3 different concentrations of 133 Cs (0.5, 2, and 5 mg/L CsCl), more than 48% of the 133 Cs was remediated after 7 days in each case. The highest remediation rate was 67%, by sunflowers grown in 5 mg/L CsCl. Among the 3 species, shoot and root dry weights were highest in sunflower and lowest in cosmos. The rate of 133 Cs uptake was strongly correlated with aboveground plant biomass. The 133 Cs concentration did not affect plant growth rates in any of the three species.

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Section: Introductionmentioning

confidence: 99%

<sup>133</sup>Cesium Uptake by 10 Ornamental Plant Species Cultivated Under Hydroponic Conditions

Ikeura¹,

Narishima²,

Tamaki³

2014

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“…273 inflata to be a high foliar accumulator of Cs ( 133 Cs was used as the contaminant spike) as compared 274 to other macrophytes. 42 Further investigation is warranted to validate concentrations found in our 275 study, and if accurate, assess the impact of these concentrations on the ecosystem. 276 277…”

Section: Concentrations Of Radionuclides By Individual Plant Species mentioning

confidence: 85%

Plants as bio-monitors for Cs-137, Pu-238, Pu-239,240 and K-40 at the Savannah River Site

et al. 2011

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. 1 Introduction 1The nuclear fuel cycle generates a considerable amount of radioactive waste, which often 2 includes nuclear fission products, such as strontium-90 ( 90 Sr) and cesium-137 ( 137 Cs), and actinides 3 such as uranium (U) and plutonium (Pu). When released into the environment, large quantities of 4 these radionuclides can present considerable problems to man and biota due to their radioactive 5 nature and, in some cases as with the actinides, their chemical toxicity. Radionuclides are expected 6 to decay at a known rate. Yet, research has shown the rate of elimination from an ecosystem to differ 7 from the decay rate due to physical, chemical and biological processes that remove the contaminant 8 or reduce its biological availability. 1 Knowledge regarding the rate by which a contaminant is 9 eliminated from an ecosystem (ecological half-life) is important for evaluating the duration and 10 potential severity of risk. To better understand a contaminants impact on an environment, 11 consideration should be given to plants. As primary producers, they represent an important mode of 12 contamination transfer from sediments and soils into the food chain. Contaminants that are 13 chemically and/or physically sequestered in a media are less likely to be bio-available to plants and 14 therefore an ecosystem. 15It is widely accepted that the sorption capacity of a soil, particularly particle size distribution 16 (sand, silt and clay percentages) and mineralogy, play a large role in the availability of radionuclides 17 to plants. 2,3,4,5 However, these parameters are unable to account for the variations of concentrations 18 found in different plant species. 6,7,8,9 Plants will often accumulate contamination as a consequence of 19 mineral and nutrient attainment. Plants that have shown an ability to accumulate high concentrations 20 of radionuclides have garnered recent interest for their potential to act as bio-monitors in helping 21 identify areas of ecological and transport risk. 10 The purpose of this study was to reexamine 22 established and identify potential new plant species that are active accumulators of radionuclides in 23 terrestrial, lotic and lentic environments. 11,12,13 As such, this study took place in an area known to be 24 impacted by nuclear processing: the Savannah River Site (SRS) in Aiken, South Carolina (SC). The 25 SRS is a Dept. of Energy (DOE) site that produced primarily tritium and Pu used in the fabrication of 26 nuclear weapons from 1952 to 1988. The SRS utilized natural streams, series of canals and 27 reservoirs to disperse heat from nuclear reactors. As a result of routine discharges, routine leaks in 28 the heat exchangers, and occasional leaks in fuel and core elements, over 50 radionuclides were 29 released to the atmosphere, to onsite streams, and to seepage basins. 14 Since production was halted in 30 the late 1980s, the primary mission of the DOE at the SRS has been environmental cleanup. 31Macrophytes and stream-side terrestrial plants from areas impacted by operations...

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“…Cesium is an alkali metal that occurs naturally in sedimentary and igneous rocks at concentrations usually around 3 mg kg −1 (Faure 1998;Cook et al 2007) and in soils ranging from 0 to 26 mg kg −1 (Cook et al 2007). Most of its chemical properties are similar to those of potassium (Pinder et al 2006). Stable cesium is the scarcest of alkali metals and has no nutritional role in plants, although can be absorbed by them easily (Dabbagh et al 2008).…”

Section: Introductionmentioning

confidence: 99%

Potential of Calendula alata for phytoremediation of stable cesium and lead from solutions

Borghei

Arjmandi

Moogouei

2011

Environ Monit Assess

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Calendula alata plants were tested for their potential to remove stable cesium and lead from solutions in a 15-day period. The plants were grown hydroponically and placed in solutions containing CsCl and Pb(C₂H₃O₂)₂ at different concentrations (0.6, 2 and 5 mg l⁻¹). When plants were incubated in CsCl solutions 46.84 ± 2.12%, 41.35 ± 1.59%, and 52.06 ± 1.02% cesium was found to be remediated after 15 days. Moreover, more than 99% lead was removed from the Pb(C₂H₃O₂)₂ solution in all three concentrations after 15 days during the same period. When both CsCl and Pb(C₂H₃O₂)₂ were supplemented together in the solution, 9.92 ± 1.22%, 45.56 ± 3.52%, and 46.16 ± 1.48% cesium and 95.30 ± 0.72%, 96.64 ± 0.30%, and 99.02 ± 0.04% lead were removed after 15 days. The present study suggests that hydroponically grown C. alata could be used as a potential candidate plant for phytoremediation of cesium and lead from solutions; however, plants were found to be more efficient for the remediation of lead than cesium.

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Foliar uptake of cesium from the water column by aquatic macrophytes

Cited by 43 publications

References 46 publications

<sup>133</sup>Cesium Uptake by 10 Ornamental Plant Species Cultivated Under Hydroponic Conditions

<sup>133</sup>Cesium Uptake by 10 Ornamental Plant Species Cultivated Under Hydroponic Conditions

Plants as bio-monitors for Cs-137, Pu-238, Pu-239,240 and K-40 at the Savannah River Site

Potential of Calendula alata for phytoremediation of stable cesium and lead from solutions

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