Abstract
With the development of phytoremediation technology, “phytomining” or “agromining”, a new technology that extract valuable metals (such as nickel, gold, and rare earth elements) with hyperaccumulators or crops from lean ore or metal-rich soil, has gradually attracted the attention of academic and commercial fields. It’s no doubt that the conventional mining techniques are uneconomical for lean ore mining and metal-rich soil treatment. Therefore, phytomining technology is expected to be environmentally and economic benefits technology to solve the increasingly scarce metal resources because it can harvest metal and recover biomass energy. This paper aims to critically review the literature on phytomining techniques and their current challenges, hyperaccumulator plant species of nickel, gold, and rare earth elements. The efforts have also been made to summarize the factors affecting the economic benefit of phytomining and improvement measures. The review concludes that phytomining offers the possibility of economically mining metal from lean ore and contaminated soil; however, its commercial viability is limited in the current scenario. In the end, efforts have been made to highlight contemporary challenges including research gaps and future perspectives in improving its commercial viability.
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Abbreviations
- D.W.:
-
Dry weight
- REEs:
-
Rare earth elements
- TU:
-
Thiourea
- ANSH:
-
A purity 99% nickel sulfate hexahydrate
- EDTA:
-
Ethylenediaminetetraacetic acid
- EDDS:
-
Ethylenediaminedisuccinicacid
- AM:
-
A rbuscular mycorrhiza
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Acknowledgements
This research was supported by “The Scientific Research projects of the Education Department of Shaanxi Province (20JS017)” and “The Special Plan of the Scientific Research Projects of the Shaanxi Education Department (17JK0150)”.
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This research was supported by “The Scientific Research projects of the Education Department of Shaanxi Province (20JS017)” and “The Special Plan of the Scientific Research Projects of the Shaanxi Education Department (17JK0150)”.
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Dang, P., Li, C. A mini-review of phytomining. Int. J. Environ. Sci. Technol. 19, 12825–12838 (2022). https://doi.org/10.1007/s13762-021-03807-z
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DOI: https://doi.org/10.1007/s13762-021-03807-z