Abstract:BACKGROUND:The high demand for coal-based energy leads to the production of a massive amount of coal fly ash (CFA). Owing to the content of rare earth elements (REEs), CFA is regarded as one of the promising secondary sources of REEs. The corrent study utilized two intensified extraction methods, subcritical water extraction (SWE) and microwave assisted extraction (MAE), in the recovery of REEs, including yttrium (Y) and samarium (Sm), from CFA sample.RESULTS: The effects of acid concentration, temperature, an… Show more
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