Rare earth elements mobility, leaching and recovery by different chemicals treatment on coal samples and calcined samples of Sohagpur Coalfield, Madhya Pradesh, India.

Autor: Modi, Prashant, Jamal, Aarif, Varshney, Ramita, Rahi, Ishwar Chandra, Siddiqui, Mohd Adil
Předmět:
Zdroj: International Journal of Coal Preparation & Utilization; 2023, Vol. 43 Issue 1, p148-168, 21p
Abstrakt: Coal and its by-product are considered a promising resource for the critical elements and rare earth elements (REEs). Due to the increasing criticality of REEs, recovering REEs from alternative resources has become essential. This research work identifies the importance of REEs and their extraction from coal, shaly coal and calcined material by leaching method. This work aims to understand the REEs recovery from raw samples (containing coal samples and shaly coal samples) and calcined material by acidic or basic solution leaching. The acid was taken in experimental leaching is Sulfuric acid (H2SO4). The base was taken here in experimental work is Sodium Hydroxide (NaOH) in leaching. Highest recovered element is Cesium which has a concentration of 73,000 ppb in collected solution after leaching, and the average concentration of REEs is 12,711 ppb after leaching. The calcined samples have given 1.5 times more recovery of REEs than normal samples in the leachate of acidic leaching. Experimental results showed that the recovery of REEs, especially LREEs, can be improved by using acidic leaching. It also depicts that the most effective recovery of REEs was from calcined coal material by acidic leaching. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
Externí odkaz:
Nepřihlášeným uživatelům se plný text nezobrazuje