Potential of four aquatic plant species to remove 60Co from contaminated water under changing experimental conditions
This study aimed to compare the potential of Lemna minor , Spirodela sp., Eichhornia crassipes and Pistia stratiotes to remove 60 Co from a realistic aquatic environment. Although all four plant species performed similarly well after 3 days of exposure to 50 kBq L −1 60 Co, Lemna minor and Spirodela...
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Published in | Environmental science and pollution research international Vol. 25; no. 27; pp. 27187 - 27195 |
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Main Authors | , , , |
Format | Journal Article |
Language | English |
Published |
Berlin/Heidelberg
Springer Berlin Heidelberg
01.09.2018
Springer Nature B.V |
Subjects | |
Online Access | Get full text |
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Summary: | This study aimed to compare the potential of
Lemna minor
,
Spirodela
sp.,
Eichhornia crassipes
and
Pistia stratiotes
to remove
60
Co from a realistic aquatic environment. Although all four plant species performed similarly well after 3 days of exposure to 50 kBq L
−1 60
Co,
Lemna minor
and
Spirodela
sp. came forward as having higher
60
Co removal potential. This conclusion is, in first instance, based on the high
60
Co removal percentage obtained after a short contact time (e.g. more than 95% could be removed after 6 h by
Spirodela
sp.). Additionally,
Lemna minor
and
Spirodela
sp. accumulated a high amount of
60
Co per gram of biomass. For example,
Lemna minor
accumulated over three times more
60
Co per gram of biomass compared to
Pistia stratiotes
and
Eichhornia crassipes
. Both plants also performed well in the pH range 5–9. We used
Lemna minor
to test the influence of the initial
60
Co concentration (10, 50, 100 and 200 kBq L
−1 60
Co) on its phytoremediation capacity but no differences could be observed in removal percentage. In addition, it was shown that by optimising the initial amount of biomass, radioactive waste production can be minimised whilst maintaining high
60
Co removal rates. Our study shows that these aquatic plants can be used for phytoremediation of
60
Co from contaminated water and can be considered as a “green” addition or alternative for conventional remediation techniques. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 0944-1344 1614-7499 |
DOI: | 10.1007/s11356-018-2759-7 |