Method for phytomining of nickel, cobalt and other metals from soil
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United States of America Patent
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Sep 7, 2004
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N/A
app pub date -
Feb 24, 1999
filing date -
Aug 30, 1996
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Abstract
The recovery of nickel, cobalt and other metals by phytomining is described. Plants of the Alyssum genus are grown in nickel rich soil. The uptake of nickel is enhanced by maintaining specific soil conditions, including a concentration of calcium between (but not including) 0.128 mM an 5.0 mM and an acidic pH. Ni uptake may be further enhanced by maintaining a ratio of exchangeable Ca/Mg of 0.16-0.40. Uptake may be further enhanced by addition of chelating agents and ammonium based fertilizers.
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