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פותח על ידי קלירמאש פתרונות בע"מ -
Phytoremediation of uranium-contaminated soils: Role of organic acids in triggering uranium hyperaccumulation in plants
Year:
1998
Authors :
קפולניק, יורם
;
.
Volume :
32
Co-Authors:
Huang, J.W., Phytotech Inc., 1 Deer Park Drive, Monmouth Junction, NJ 08852, United States
Blaylock, M.J., Phytotech Inc., 1 Deer Park Drive, Monmouth Junction, NJ 08852, United States
Kapulnik, Y., Phytotech Inc., 1 Deer Park Drive, Monmouth Junction, NJ 08852, United States
Ensley, B.D., Phytotech Inc., 1 Deer Park Drive, Monmouth Junction, NJ 08852, United States
Facilitators :
From page:
2004
To page:
2008
(
Total pages:
5
)
Abstract:
Uranium phytoextraction, the use of plants to extract U from contaminated soils, is an emerging technology. We report on the development of this technology for the cleanup of U-contaminated soils. In this research, we investigated the effects of various soil amendments on U desorption from soil to soil solution, studied the physiological characteristics of U uptake and accumulation in plants, and developed techniques to trigger U hyperaccumulation in plants. A key to the success of U phytoextraction is to increase soil U availability to plants. We have found that some organic acids can be added to soils to increase U desorption from soil to soil solution and to trigger a rapid U accumulation in plants. Of the organic acids (acetic acid, citric acid, and malic acid) tested, citric acid was the most effective in enhancing U accumulation in plants. Shoot U concentrations of Brassica juncea and Brassica chinensis grown in a U-contaminated soil (total soil U, 750 mg kg-1) increased from less than 5 mg kg-1 to more than 5000 mg kg- 1 in citric acid-treated soils. To our knowledge, this is the highest shoot U concentration reported for plants grown on U-contaminated soils. Using this U hyperaccumulation technique, we are now able to increase U accumulation in shoots of selected plant species grown in two U-contaminated soils (total soil U, 280 and 750 mg kg-1) by more than 1000-fold within a few days. Our results suggest that U phytoextraction may provide an environmentally friendly alternative for the cleanup of U-contaminated soils.Uranium phytoextraction, the use of plants to extract U from contaminated soils, is an emerging technology. We report on the development of this technology for the cleanup of U-contaminated soils. In this research, we investigated the effects of various soil amendments on U desorption from soil to soil solution, studied the physiological characteristics of U uptake and accumulation in plants, and developed techniques to trigger U hyperaccumulation in plants. A key to the success of U phytoextraction is to increase soil U availability to plants. We have found that some organic acids can be added to soils to increase U desorption from soil to soil solution and to trigger a rapid U accumulation in plants. Of the organic acids (acetic acid, citric acid, and malic acid) tested, citric acid was the most effective in enhancing U accumulation in plants. Shoot U concentrations of Brassica juncea and Brassica chinensis grown in a U-contaminated soil (total soil U, 750 mg kg-1) increased from less than 5 mg kg-1 to more than 5000 mg kg-1 in citric acid-treated soils. To our knowledge, this is the highest shoot U concentration reported for plants grown on U-contaminated soils. Using this U hyperaccumulation technique, we are now able to increase U accumulation in shoots of selected plant species grown in two U-contaminated soils (total soil U, 280 and 750 mg kg-1) by more than 1000-fold within a few days. Our results suggest that U phytoextraction may provide an environmentally friendly alternative for the cleanup of U-contaminated soils.
Note:
Related Files :
bioavailability
Biomass
concentration (parameters)
metal binding
phytoextraction
plant
soil pollution
Soil pollution control
עוד תגיות
תוכן קשור
More details
DOI :
10.1021/es971027u
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
30340
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:53
Scientific Publication
Phytoremediation of uranium-contaminated soils: Role of organic acids in triggering uranium hyperaccumulation in plants
32
Huang, J.W., Phytotech Inc., 1 Deer Park Drive, Monmouth Junction, NJ 08852, United States
Blaylock, M.J., Phytotech Inc., 1 Deer Park Drive, Monmouth Junction, NJ 08852, United States
Kapulnik, Y., Phytotech Inc., 1 Deer Park Drive, Monmouth Junction, NJ 08852, United States
Ensley, B.D., Phytotech Inc., 1 Deer Park Drive, Monmouth Junction, NJ 08852, United States
Phytoremediation of uranium-contaminated soils: Role of organic acids in triggering uranium hyperaccumulation in plants
Uranium phytoextraction, the use of plants to extract U from contaminated soils, is an emerging technology. We report on the development of this technology for the cleanup of U-contaminated soils. In this research, we investigated the effects of various soil amendments on U desorption from soil to soil solution, studied the physiological characteristics of U uptake and accumulation in plants, and developed techniques to trigger U hyperaccumulation in plants. A key to the success of U phytoextraction is to increase soil U availability to plants. We have found that some organic acids can be added to soils to increase U desorption from soil to soil solution and to trigger a rapid U accumulation in plants. Of the organic acids (acetic acid, citric acid, and malic acid) tested, citric acid was the most effective in enhancing U accumulation in plants. Shoot U concentrations of Brassica juncea and Brassica chinensis grown in a U-contaminated soil (total soil U, 750 mg kg-1) increased from less than 5 mg kg-1 to more than 5000 mg kg- 1 in citric acid-treated soils. To our knowledge, this is the highest shoot U concentration reported for plants grown on U-contaminated soils. Using this U hyperaccumulation technique, we are now able to increase U accumulation in shoots of selected plant species grown in two U-contaminated soils (total soil U, 280 and 750 mg kg-1) by more than 1000-fold within a few days. Our results suggest that U phytoextraction may provide an environmentally friendly alternative for the cleanup of U-contaminated soils.Uranium phytoextraction, the use of plants to extract U from contaminated soils, is an emerging technology. We report on the development of this technology for the cleanup of U-contaminated soils. In this research, we investigated the effects of various soil amendments on U desorption from soil to soil solution, studied the physiological characteristics of U uptake and accumulation in plants, and developed techniques to trigger U hyperaccumulation in plants. A key to the success of U phytoextraction is to increase soil U availability to plants. We have found that some organic acids can be added to soils to increase U desorption from soil to soil solution and to trigger a rapid U accumulation in plants. Of the organic acids (acetic acid, citric acid, and malic acid) tested, citric acid was the most effective in enhancing U accumulation in plants. Shoot U concentrations of Brassica juncea and Brassica chinensis grown in a U-contaminated soil (total soil U, 750 mg kg-1) increased from less than 5 mg kg-1 to more than 5000 mg kg-1 in citric acid-treated soils. To our knowledge, this is the highest shoot U concentration reported for plants grown on U-contaminated soils. Using this U hyperaccumulation technique, we are now able to increase U accumulation in shoots of selected plant species grown in two U-contaminated soils (total soil U, 280 and 750 mg kg-1) by more than 1000-fold within a few days. Our results suggest that U phytoextraction may provide an environmentally friendly alternative for the cleanup of U-contaminated soils.
Scientific Publication
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