scholarly journals Major element composition controls rare earth element solubility during leaching of coal fly ash and coal by-products

2020 ◽  
Vol 227 ◽  
pp. 103532 ◽  
Author(s):  
Andrew Middleton ◽  
Dan M. Park ◽  
Yongqin Jiao ◽  
Heileen Hsu-Kim
Keyword(s):  
Rare Earth ◽  
Fly Ash ◽  
Rare Earth Element ◽  
Earth Element ◽  
Major Element ◽  
Coal Fly Ash ◽  
Element Composition ◽  
Major Element Composition ◽  
By Products

Experimental Study of Rare Earth Element Enrichment from Indonesian Coal Fly Ash: Alkaline Leaching

2020 ◽  
Vol 840 ◽  
pp. 514-519
Author(s):  
Widya Rosita ◽  
I Made Bendiyasa ◽  
Indra Perdana ◽  
Ferian Anggara
Keyword(s):  
Rare Earth ◽  
Fly Ash ◽  
Rare Earth Element ◽  
Earth Element ◽  
Coal Fly Ash ◽  
Green Technology ◽  
Critical Element ◽  
Two Samples ◽  
Indonesian Coal ◽  
Element Enrichment

Rare Earth Element plus Yttrium (REY) is an critical element in green technology and consumer goods. Due to its limited supply, it is necessary to look for alternative sources of REY which one of the potential candidates is coal fly ash. Two samples of coal fly ash which originated from Indonesia were leached in an alkaline solution in order to remove Si and increase REY content. Samples were collected from pulverized coal power plant in East Java (sample T) and West Java (sample I). Leaching conditions were studied including concentration of NaOH, ratio of volume of liquid (L) to weight of solid (S) and leaching time. It was found that the optimum condition was reached at NaOH concentration of 8M, L/S ratio (10 mL: 1 g) and leaching time of 120 min. At this condition, percent removal of Si and REY enrichment were respectively 56.22% and 30% for sample I, and 33.75% and 24% for sample T.

Multi-element and rare earth element composition of lichens, mosses, and vascular plants from the Central Barrenlands, Nunavut, Canada

2001 ◽  
Vol 16 (2) ◽  
pp. 245-270 ◽  
Author(s):  
J. Chiarenzelli ◽  
L. Aspler ◽  
C. Dunn ◽  
B. Cousens ◽  
D. Ozarko ◽  
...  
Keyword(s):  
Rare Earth ◽  
Rare Earth Element ◽  
Vascular Plants ◽  
Earth Element ◽  
Element Composition
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