A Comparison of the Solubilizing Potential of Some Aminopolycarboxylic Acids, Hortrilon<sup>®</sup> and Fetrilon<sup>®</sup> for Use in Phytoextraction — Oak Academic Publishing
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A Comparison of the Solubilizing Potential of Some Aminopolycarboxylic Acids, Hortrilon<sup>®</sup> and Fetrilon<sup>®</sup> for Use in Phytoextraction
Department of Soil Genesis, Survey and Classification, Soil Research Institute, Kumasi, Ghana
,
Department of Soil Genesis, Survey and Classification, Soil Research Institute, Kumasi, Ghana
,
Department of Analytical Chemis- try and Echo Chemistry, Faculty of BioScience Engineering, Ghent University, Gent, Belgium
,
Department of Chemistry, Univer- sity of Cape Coast, Cape Coast, Ghana
1 Department of Soil Genesis, Survey and Classification, Soil Research Institute, Kumasi, Ghana
2 Department of Soil Genesis, Survey and Classification, Soil Research Institute, Kumasi, Ghana
3 Department of Analytical Chemis- try and Echo Chemistry, Faculty of BioScience Engineering, Ghent University, Gent, Belgium
4 Department of Chemistry, Univer- sity of Cape Coast, Cape Coast, Ghana
Phytoextraction has been introduced as a new technology to clean up soils contaminated with heavy metals as the use of conventional methods to clean up the soil is very expensive and destructive to the ecosystem. However, using plants to clean up contaminated soils takes a considerable period before the contaminants are removed from the soil by the plants. This has necessitated the use of amendments to enhance phytoextraction in order to shorten the period of contaminants removal by plants. In view of this, a pot experiment was conducted to study the effect of various aminopolycarboxylic acids (EDTA, EDDS, NTA dry and NTA liquid) and two commercial fertilizers which are Hortrilon ? and Fetrilon ? on their ability to solubilize Cd and Zn in contaminated soils. It was observed that the inducing effect of EDTA on the solubility of Cd and Zn persisted throughout the experimental period. Initially, EDDS enhanced the solubility Cd and Zn, however, its effect dissipated with time. The application of both NTA dry (powder) and NTA liquid had a significant effect on the solubility of Zn as a result of the formation of Zn-NTA soluble complexes. Hortrilon ? and Fetrilon ? solubilized significant concentrations of both Cd and Zn with Hortrilon ? having the greatest inducing effect on the solubility of Cd and Zn.
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