fig12

Figure 12. Changes in Zr/TREE as a function of the TREE content for zircon particles found in the alkali-pretreated and alkali-pretreated, acid-leached coal wastes. Zr/TREE: Zr to total REE content.

Figure 12. Changes in Zr/TREE as a function of the TREE content for zircon particles found in the alkali-pretreated and alkali-pretreated, acid-leached coal wastes. Zr/TREE: Zr to total REE content.
 
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