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Induced Plant Accumulation of Lithium

机译：锂诱导的植物积累

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Lithium’s (Li) value has grown exponentially since the development of Li-ion batteries. It is usually accessed in one of two ways: hard rock mineral mining or extraction from mineral-rich brines. Both methods are expensive and require a rich source of Li. This paper examines the potential of agro-mining as an environmentally friendly, economically viable process for extracting Li from low grade ore. Agro-mining exploits an ability found in few plant species, to accumulate substantial amounts of metals in the above ground parts of the plant. Phyto-mined metals are then retrieved from the incinerated plants. Although the actual amount of metal collected from a crop may be low, the process has been shown to be profitable. We have investigated the suitability of several plant species including: Brassica napus and Helianthus annuus , as Li-accumulators under controlled conditions. Large plant trials were carried out with/without chelating agents to encourage Li accumulation. The question we sought to answer was, can any of the plant species investigated accumulate Li at levels high enough to justify using them to agro-mine Li. Results show maximum accumulated levels of 4000 mg/kg Li in some species. Our data suggests that agro-mining of Li is a potentially viable process.
机译：自从锂离子电池发展以来，锂（Li）值呈指数增长。通常以以下两种方式之一进行访问：硬岩矿物开采或从富含矿物质的盐水中提取。两种方法都很昂贵，并且需要大量的锂。本文探讨了农业开采作为一种从低品位矿石中提取锂的环保，经济可行的方法的潜力。农业采矿利用一种在少数植物物种中发现的能力，在植物的地上部分积累大量金属。然后从焚化的植物中提取植物提取的金属。尽管从农作物中收集的实际金属量可能很少，但该过程已证明是有利可图的。我们已经研究了几种植物的适宜性，其中包括：甘蓝型油菜和向日葵，作为可控条件下的锂蓄积剂。在有/无螯合剂的条件下进行了大型植物试验，以鼓励锂的积累。我们试图回答的问题是，被调查的任何植物物种是否都能以足够高的水平积累锂，以证明使用它们来农业生产锂。结果表明，某些物种的最大累积锂含量> 4000 mg / kg。我们的数据表明，锂的农业开采是一个潜在可行的过程。

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