Skip to main content
Conference Proceedings

Life-of-Mine Conference 2014

Conference Proceedings

Life-of-Mine Conference 2014

PDF Add to cart

Phytostabilisation and Phytomining - Principles and Successes

Mine and ore beneficiation wastes and smelter contaminated soils often cause phytotoxicity and threaten adverse environmental effects if not remediated. Science has clarified both the risks from soil metals and methods to alleviate those risks that can be applied at low cost. Phytoremediation is a family of plant and agronomy based technologies to deal with environmental aspects of sites requiring remediation. If valid risk assessment indicates that metals comprise risk, phytostabilisation may be used to alleviate that risk for most contaminated sites. In particular, Zn-Pb, Cu and Ni mine and smelter sites are readily remediated by making the soil calcareous and fertile, with added organic and metal sorbent amendments that include soil microbes to revitalise' the soil. In each case, the soil fertility and causes of phytotoxicity should be clarified by agricultural soil extractions, and the combination of amendments required to improve fertility and reverse phytotoxicity identified and found locally. In contrast with phytostabilisation, phytoextraction/phytomining uses rare metal hyperaccumulator plants and agronomic management to maximise annual phytoextraction of soil elements into plant shoots for harvest, ashing and use as a metal ore. Plants that accumulate more than two per cent Ni in shoots, and yield 10-20 t ha-1 dry biomass yield 200-400 kg Ni ha-1, which has value greater than all common agricultural crops. Considering the value of elements, existence of hyperaccumulator plants and demonstrated agronomic management for Ni phytomining, it is clear that mine sites and Ni mineralised subore-grade serpentine soils can be phytomined economically as an agricultural mining technology. A team developed agronomic methods and improved cultivars of Alyssum, which can be profitably grown on temperate zone Ni mineralised or contaminated soils. Plant species for tropical ultramafic soil materials have been identified. Phytoextraction is also strongly needed to remove Cd from rice soils to prevent human disease from soil Cd.CITATION:Chaney, RLandMahoney, M, 2014. Phytostabilisation and phytomining - principles and successes, in Proceedings Life-of-Mine 2014 , pp 3-16 (The Australasian Institute of Mining and Metallurgy: Melbourne).
Return to parent product
  • Phytostabilisation and Phytomining - Principles and Successes
    PDF
    This product is exclusive to Digital library subscription
  • Phytostabilisation and Phytomining - Principles and Successes
    PDF
    Normal price $22.00
    Member price from $0.00
    Add to cart

    Fees above are GST inclusive

PD Hours
Approved activity
  • Published: 2014
  • PDF Size: 1.427 Mb.
  • Unique ID: P201404001

Our site uses cookies

We use these to improve your browser experience. By continuing to use the website you agree to the use of cookies.