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Assess various extraction technologies for strategic metals from coal fly ash for resource recovery.

Solid waste utilization: a comprehensive review of strategic metal extraction technologies from coal fly ash

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Assess various extraction technologies for strategic metals from coal fly ash for resource recovery.
Systematic review of technologies developed over the past decade.
Comparison of conventional leaching techniques with emerging methods.
Evaluation of pretreatment methods like mechanochemical activation and calcination.
Notable improvements in metal recovery and process optimization.
Challenges include high energy consumption and secondary pollution.
Future research should focus on developing low-energy processes and improving selectivity.

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Review evaluates extraction methods for strategic metals from coal fly ash, suggesting improvements for efficiency and sustainability.

Xie et al. (2026) studied this question.

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