A Green Approach to Heavy Metal Removal Through Invasive Plants Combined with Superabsorbent Polymer

Le résumé fourni par la source

Abstract Heavy metal pollution in soil is a global environmental issue due to its negative effects on human health, agricultural product quality, and the ecological environment. Therefore, it is crucial to choose a highly effective, low‐cost, and environmentally friendly technical solution to restore and rehabilitate heavy metal‐contaminated soil. This article presents the results of combining a well‐known invasive plant, Sphagneticola trilobata (L.) Pruski (STP), with superabsorbent polymer (SAP) to treat heavy metals (lead (Pb) and zinc (Zn))–contaminated soil at a mineral waste dump in Thai Nguyen province, Vietnam. SAP was applied at 0–0.8 g/kg soil. The heavy metal concentrations in the soil and plants were determined after 30, 60, and 90 days. The antioxidant and antibacterial activities of STP were assessed after 90 days. STP grew strongly, yielded a high biomass, and showed improved antioxidant and antibacterial activity as well as heavy metal treatment efficiency when combined with SAP for 90 days. The application of SAP at 0.6–0.8 g/kg soil led to the best results, including the highest treatment efficiency for Pb and Zn (p < 0.05).

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.