8 January 2024 | Christos Kikis, Georgios Thalassinos and Vasileios Antoniadis
Phytomining (PM) is an innovative and environmentally friendly method that uses plants to extract metals from soil, offering a sustainable alternative to conventional mining. This review highlights the current status of PM techniques, the hyperaccumulator plant species used, and the factors influencing the economic viability of PM. Hyperaccumulators are plants that can concentrate metals in their tissues to levels significantly higher than those found in the surrounding soil. The review covers the accumulation of various metals such as nickel (Ni), cobalt (Co), cadmium (Cd), zinc (Zn), selenium (Se), manganese (Mn), thallium (Tl), and noble metals (NMs). Key aspects discussed include the selection of hyperaccumulator plants, the role of soil pH, fertilizers, and chelates in enhancing metal accumulation, and the recovery of metals from plant biomass. The review emphasizes the need for further research to improve the commercial implementation of PM and its potential to assist the mining industry. Despite its promising nature, the full commercial viability of PM remains constrained by the limited availability of suitable hyperaccumulator plant species and the need for further technological advancements.Phytomining (PM) is an innovative and environmentally friendly method that uses plants to extract metals from soil, offering a sustainable alternative to conventional mining. This review highlights the current status of PM techniques, the hyperaccumulator plant species used, and the factors influencing the economic viability of PM. Hyperaccumulators are plants that can concentrate metals in their tissues to levels significantly higher than those found in the surrounding soil. The review covers the accumulation of various metals such as nickel (Ni), cobalt (Co), cadmium (Cd), zinc (Zn), selenium (Se), manganese (Mn), thallium (Tl), and noble metals (NMs). Key aspects discussed include the selection of hyperaccumulator plants, the role of soil pH, fertilizers, and chelates in enhancing metal accumulation, and the recovery of metals from plant biomass. The review emphasizes the need for further research to improve the commercial implementation of PM and its potential to assist the mining industry. Despite its promising nature, the full commercial viability of PM remains constrained by the limited availability of suitable hyperaccumulator plant species and the need for further technological advancements.