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- W3204192021 abstract "Phytotechnologies have showed potential for sustainable and low-cost use in remediation of contaminated lands. In order to increase effectivness of the phytoremediation process on contaminated sites assisted phytoremediation techniques are developed. One of such procedures is use of chelating agents, able to effectively mobilize metals into the soil solution and bioavailable forms, where they can consequently be uptaken by selected plant species. Various types of chelates, both synthetic and natural, can be used in this process. Chelate-assisted phytoremediation process includes interactions between soil, targeted element(s), chelate and plant in complex processes of solution and transport of elements from soil and their uptake and translocation in plants. Different researches acknowledged efficient element uptake from contaminated soils into selected plant species accompanied with use of adequate chelating agents, especially for sites with low initial mobility of contaminants. However, chelate-assistant phytoremediation is still prone to several limitation and drawbacks. Leaching of mobilized metals from chelate-treated soils is often reported, sometimes also accompanied with leaching of soil macronutrients. Moreover, low biodegradability of applied chelates is able to cause additional toxicity and leaching to the soil and waters. Application of biodegradable chelating agents with short degradation period instead of syntethic and low-degradable chelates has been viewed as the alternative for reducing the environmental risks connected with use of chelates. Besides, selection of adequate chelating agent shall also take into account eventual cost of remediation process, dosage and single or multiply additions of chelates to the soil. Selection of plant species tolerant to chelate applications and able to effectively regulate the metal uptake in the presence of chelates should contribute to the avoidance of often recorded plant biomass reduction. Application of suitable agronomic practices could also contribute to the increase of plant biomass enriched with accumulated elements, thus increasing the efficiency of the phytoremediation process. Overall, chelate-enhanced phytoremediation still needs improvements in several directions within its range of action in order to be successfully optimized to the field conditions and recognized as environmentally safe and cost-effective remediation solution." @default.
- W3204192021 created "2021-10-11" @default.
- W3204192021 creator A5000635158 @default.
- W3204192021 creator A5004344866 @default.
- W3204192021 creator A5015213738 @default.
- W3204192021 date "2022-01-01" @default.
- W3204192021 modified "2023-09-24" @default.
- W3204192021 title "Chelate-assisted phytoremediation" @default.
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