Testing the potential of enhanced phytoextraction to clean up NORM and heavy metal contaminated soils

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Testing the potential of enhanced phytoextraction to clean up NORM and heavy metal contaminated soils. / Vandenhove, Hildegarde; Duquène, Lise; Tack, F.; Baeten, J.; Wannijn, Jean.

In: Radioprotection, Vol. 44, No. 5, 06.06.2009, p. 503-508.

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@article{c8dc17d43b674ea8a896e556dba4f7e7,
title = "Testing the potential of enhanced phytoextraction to clean up NORM and heavy metal contaminated soils",
abstract = "A greenhouse experiment was set up to evaluate the potential of enhanced phytoextraction to clean up U and heavy metal contaminated soils. One soil had a naturally high U concentration; the other soil was impacted by the radium extraction industry. Enhancement of solubility and uptake by plants (ryegrass and Indian mustard) was monitored after addition of 5 chemical amendments: citric acid, ammonium citrate-citric acid mixture, oxalic acid, EDDS and NTA. Solubilisation and uptake were highly influenced by the amendment applied and soil-plant combinations. For U, citric acid, the ammonium citrate-citric acid mixture or EDDS were most effective in increasing U uptake. EDDS was most effective in increasing Cu in mustard and ryegrass and Pb in ryegrass shoots. For other metals, increase in uptake was limited to at most a factor 5. Percentages annually removed with biomass ranged from 0.0002% to 1.52%., and were lowest for U, Cr and Pb and highest for Cd. A targeted 10% reduction in soil contaminant would require 7 years for Cd, 35 and 52 years for Cu and Zn, 203 and 384 years for U and Pb and 9433 years for Cr. Phytoextraction is hence not a feasible technique to decontaminate historically contaminated soils.",
keywords = "Testing the potential of enhanced phytoextraction to clean up NORM and heavy metal contaminated soils",
author = "Hildegarde Vandenhove and Lise Duqu{\`e}ne and F. Tack and J. Baeten and Jean Wannijn",
note = "Score = 10",
year = "2009",
month = jun,
day = "6",
doi = "10.1051/radiopro/20095093",
language = "English",
volume = "44",
pages = "503--508",
journal = "Radioprotection",
issn = "0033-8451",
publisher = "Cambridge University Press",
number = "5",

}

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TY - JOUR

T1 - Testing the potential of enhanced phytoextraction to clean up NORM and heavy metal contaminated soils

AU - Vandenhove, Hildegarde

AU - Duquène, Lise

AU - Tack, F.

AU - Baeten, J.

AU - Wannijn, Jean

N1 - Score = 10

PY - 2009/6/6

Y1 - 2009/6/6

N2 - A greenhouse experiment was set up to evaluate the potential of enhanced phytoextraction to clean up U and heavy metal contaminated soils. One soil had a naturally high U concentration; the other soil was impacted by the radium extraction industry. Enhancement of solubility and uptake by plants (ryegrass and Indian mustard) was monitored after addition of 5 chemical amendments: citric acid, ammonium citrate-citric acid mixture, oxalic acid, EDDS and NTA. Solubilisation and uptake were highly influenced by the amendment applied and soil-plant combinations. For U, citric acid, the ammonium citrate-citric acid mixture or EDDS were most effective in increasing U uptake. EDDS was most effective in increasing Cu in mustard and ryegrass and Pb in ryegrass shoots. For other metals, increase in uptake was limited to at most a factor 5. Percentages annually removed with biomass ranged from 0.0002% to 1.52%., and were lowest for U, Cr and Pb and highest for Cd. A targeted 10% reduction in soil contaminant would require 7 years for Cd, 35 and 52 years for Cu and Zn, 203 and 384 years for U and Pb and 9433 years for Cr. Phytoextraction is hence not a feasible technique to decontaminate historically contaminated soils.

AB - A greenhouse experiment was set up to evaluate the potential of enhanced phytoextraction to clean up U and heavy metal contaminated soils. One soil had a naturally high U concentration; the other soil was impacted by the radium extraction industry. Enhancement of solubility and uptake by plants (ryegrass and Indian mustard) was monitored after addition of 5 chemical amendments: citric acid, ammonium citrate-citric acid mixture, oxalic acid, EDDS and NTA. Solubilisation and uptake were highly influenced by the amendment applied and soil-plant combinations. For U, citric acid, the ammonium citrate-citric acid mixture or EDDS were most effective in increasing U uptake. EDDS was most effective in increasing Cu in mustard and ryegrass and Pb in ryegrass shoots. For other metals, increase in uptake was limited to at most a factor 5. Percentages annually removed with biomass ranged from 0.0002% to 1.52%., and were lowest for U, Cr and Pb and highest for Cd. A targeted 10% reduction in soil contaminant would require 7 years for Cd, 35 and 52 years for Cu and Zn, 203 and 384 years for U and Pb and 9433 years for Cr. Phytoextraction is hence not a feasible technique to decontaminate historically contaminated soils.

KW - Testing the potential of enhanced phytoextraction to clean up NORM and heavy metal contaminated soils

UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/ezp_100442

UR - http://knowledgecentre.sckcen.be/so2/bibref/6111

U2 - 10.1051/radiopro/20095093

DO - 10.1051/radiopro/20095093

M3 - Article

VL - 44

SP - 503

EP - 508

JO - Radioprotection

JF - Radioprotection

SN - 0033-8451

IS - 5

ER -

ID: 321590