Abstract
The ability of the following seven biodegradable chelating agents (BCAs) to extract cadmium (Cd) from the soils of three paddies was tested in a tube-scale experiment to select an appropriate BCA for soil washing: l-aspartate-N,N-diacetic acid tetrasodium; N-2-hydroxyethyliminodiacetic acid disodium; (S,S)-ethylene diamine disuccinic acid; dicarboxymethyl glutamic acid; nitrilotriacetic acid; sodium methylglycine diacetate, tribasic (MGDA·3Na); and d-gluconic acid. MGDA·3Na proved to be a promising BCA candidate for soil washing in terms of extraction efficiency, and a bench-scale test confirmed the effectiveness of MGDA·3Na for removal of soil Cd. In a pot experiment, soil washing lowered the Cd concentration in rice grains but negatively affected rice yield.
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Claims 3
Claim · model-written summary
MGDA 3Na was a promising chelating agent for soil washing in terms of extraction efficiency among seven biodegradable chelating agents, and a bench-scale test confirmed its effectiveness for removing soil Cd.
Verbatim
e0“MGDA·3Na proved to be a promising BCA candidate for soil washing in terms of extraction efficiency, and a bench-scale test confirmed the effectiveness of MGDA·3Na for removal of soil Cd”
e1“the following seven biodegradable chelating agents (BCAs)”
Claim · model-written summary
In a pot experiment, soil washing lowered the Cd concentration in rice grains.
- Taxon
- rice
Oryza sativae0 - Treatment
- soil washinge0
- Outcome
- Cd concentration in rice grainse0
- Direction
- lowerede0
- Setting
- pot experimente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In a pot experiment, soil washing lowered the Cd concentration in rice grains”
Claim · model-written summary
Soil washing negatively affected rice yield.
- Taxon
- riceOryza sativae0
- Treatment
- soil washinge0
- Outcome
- rice yielde0
- Direction
- decreaseinferrede0
Not reportedComparatorSetting
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soil washing lowered the Cd concentration in rice grains but negatively affected rice yield”
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