Roles and significance of chelating agents for PTEs phytoremediation in soil: A review

What is it about?

Phytoremediation is a biological remediation technique known for low-cost technology and environmentally friendly approach, which employs plants to extract, stabilise, and transform various compounds, such as potentially toxic elements (PTEs), in the soil or water. Recent developments in utilising chelating agents soil remediation have led to a renewed interest in chelate-induced phytoremediation. This review article summarises the roles of various chelating agents and the mechanisms of chelate-induced phytoremediation. This paper also discusses the recent findings on the impacts of chelating agents on PTEs uptake and plant growth and development in phytoremediation. It was found that the chelating agents have increased the rate of metal absorption and translocation up to 45% from roots to the aboveground plant parts during PTEs phytoremediation. Besides, it was also explored that the plants may experience some phytotoxicity after adding chelating agents to the soil. However, due to the leaching potential of synthetic chelating agents, the use of organic chelants have been explored to be used in PTEs phytoremediation. Finally, this paper also presents comprehensive insights on the significance of using chelating agents through SWOT analysis to discuss the advantages and limitations of chelate-induced phytoremediation.

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Photo by Andi Superkern on Unsplash

Photo by Andi Superkern on Unsplash

Why is it important?

Addresses rising soil contamination – Explores an eco-friendly, low-cost solution for removing potentially toxic elements (PTEs). Highlights innovation – Reviews advances in chelate-induced phytoremediation, improving metal uptake efficiency by up to 45%. Balances benefits and risks – Discusses plant phytotoxicity and environmental risks like leaching from synthetic chelants. Promotes safer alternatives – Evaluates organic chelants as sustainable options for greener remediation. Guides future research and practice – Provides a SWOT analysis, offering practical insights for improving phytoremediation strategies.

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