Effect of biodegradable amendments on uranium solubility in contaminated soils

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Effect of biodegradable amendments on uranium solubility in contaminated soils. / Duquène, Lise; Tack, Filip; Meers, Erik; Baeten, Jo; Wannijn, Jean; Vandenhove, Hildegarde.

In: Science of the Total Environment, Vol. 391, No. 1, 03.12.2007, p. 26-33.

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Duquène, Lise ; Tack, Filip ; Meers, Erik ; Baeten, Jo ; Wannijn, Jean ; Vandenhove, Hildegarde. / Effect of biodegradable amendments on uranium solubility in contaminated soils. In: Science of the Total Environment. 2007 ; Vol. 391, No. 1. pp. 26-33.

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@article{e906f41b28ea477cb01204a74ac0ee8c,
title = "Effect of biodegradable amendments on uranium solubility in contaminated soils",
abstract = "Chelate-assisted phytoextraction has been proposed as a potential tool for phytoremediation of U contaminated sites. In this context, the effects of five biodegradable amendments on U release in contaminated soils were evaluated. Three soils were involved in this study, one with a relatively high background level of U, and two which were contaminated with U from industrial effluents. Soils were treated with 5 mmol kg−1 dry weight of either citric acid, NH4-citrate/citric acid, oxalic acid, S,S-ethylenediamine disuccinic acid or nitrilotriacetic acid. Soil solution concentration of U was monitored during 2 weeks. All amendments increased U concentration in soil solution, but citric acid and NH4-citrate/citric acid mixture were most effective, with up to 479-fold increase. For oxalic acid, S,S-ethylenediamine disuccinic acid and nitrilotriacetic acid, the increase ranged from10-to 100-fold. The highest concentrations were observed 1 to 7 days after treatment, after which U levels in soil solution gradually decreased. Thermodynamic stability constants (log K) of complexes did not predict the relative efficiency of the selected biodegradable amendments on U release in soil solution. Amendments efficiency was better predicted by the relative affinity of the chelate for Fe compared to U.",
keywords = "Amendment, Chelate, Desorption, Soil solution, Solubility, Uranium",
author = "Lise Duqu{\`e}ne and Filip Tack and Erik Meers and Jo Baeten and Jean Wannijn and Hildegarde Vandenhove",
note = "Score = 10",
year = "2007",
month = "12",
day = "3",
doi = "10.1016/j.scitotenv.2007.10.042",
language = "English",
volume = "391",
pages = "26--33",
journal = "Science of the Total Environment",
issn = "0048-9697",
publisher = "Elsevier",
number = "1",

}

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TY - JOUR

T1 - Effect of biodegradable amendments on uranium solubility in contaminated soils

AU - Duquène, Lise

AU - Tack, Filip

AU - Meers, Erik

AU - Baeten, Jo

AU - Wannijn, Jean

AU - Vandenhove, Hildegarde

N1 - Score = 10

PY - 2007/12/3

Y1 - 2007/12/3

N2 - Chelate-assisted phytoextraction has been proposed as a potential tool for phytoremediation of U contaminated sites. In this context, the effects of five biodegradable amendments on U release in contaminated soils were evaluated. Three soils were involved in this study, one with a relatively high background level of U, and two which were contaminated with U from industrial effluents. Soils were treated with 5 mmol kg−1 dry weight of either citric acid, NH4-citrate/citric acid, oxalic acid, S,S-ethylenediamine disuccinic acid or nitrilotriacetic acid. Soil solution concentration of U was monitored during 2 weeks. All amendments increased U concentration in soil solution, but citric acid and NH4-citrate/citric acid mixture were most effective, with up to 479-fold increase. For oxalic acid, S,S-ethylenediamine disuccinic acid and nitrilotriacetic acid, the increase ranged from10-to 100-fold. The highest concentrations were observed 1 to 7 days after treatment, after which U levels in soil solution gradually decreased. Thermodynamic stability constants (log K) of complexes did not predict the relative efficiency of the selected biodegradable amendments on U release in soil solution. Amendments efficiency was better predicted by the relative affinity of the chelate for Fe compared to U.

AB - Chelate-assisted phytoextraction has been proposed as a potential tool for phytoremediation of U contaminated sites. In this context, the effects of five biodegradable amendments on U release in contaminated soils were evaluated. Three soils were involved in this study, one with a relatively high background level of U, and two which were contaminated with U from industrial effluents. Soils were treated with 5 mmol kg−1 dry weight of either citric acid, NH4-citrate/citric acid, oxalic acid, S,S-ethylenediamine disuccinic acid or nitrilotriacetic acid. Soil solution concentration of U was monitored during 2 weeks. All amendments increased U concentration in soil solution, but citric acid and NH4-citrate/citric acid mixture were most effective, with up to 479-fold increase. For oxalic acid, S,S-ethylenediamine disuccinic acid and nitrilotriacetic acid, the increase ranged from10-to 100-fold. The highest concentrations were observed 1 to 7 days after treatment, after which U levels in soil solution gradually decreased. Thermodynamic stability constants (log K) of complexes did not predict the relative efficiency of the selected biodegradable amendments on U release in soil solution. Amendments efficiency was better predicted by the relative affinity of the chelate for Fe compared to U.

KW - Amendment

KW - Chelate

KW - Desorption

KW - Soil solution

KW - Solubility

KW - Uranium

UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/ezp_85254

UR - http://knowledgecentre.sckcen.be/so2/bibref/4701

U2 - 10.1016/j.scitotenv.2007.10.042

DO - 10.1016/j.scitotenv.2007.10.042

M3 - Article

VL - 391

SP - 26

EP - 33

JO - Science of the Total Environment

JF - Science of the Total Environment

SN - 0048-9697

IS - 1

ER -

ID: 101422