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Using Industrial Mining Solid Waste through Conversion to Phase-Change Materials for Thermal Energy Storage
Jiaping Jiang1, Yitong Cao1, Guo Li1
1School of Low-carbon Energy and Power Engineering, China University of Mining and Technology, Xuzhou, 221116, PR China.
Chempluschem
|January 14, 2025
Summary
Industrial solid wastes like fly ash, slag, and tailings can be modified into porous matrices for phase change materials (PCMs). This review explores their use in thermal energy storage, offering solutions for waste utilization and pollution reduction.
Area of Science:
- Materials Science
- Environmental Engineering
- Chemical Engineering
Background:
- Mining and metallurgy generate substantial industrial solid waste annually, including fly ash (FA), slag, and tailings.
- Improper disposal of these wastes leads to significant soil, air, and water pollution, posing risks to human health.
- Current waste management strategies like landfilling and limited component recovery are insufficient and resource-intensive.
Purpose of the Study:
- To review the recent research on utilizing mining industry solid wastes as matrices for phase change materials (PCMs).
- To explore the potential of modified FA, slag, and tailings for thermal energy storage applications.
- To provide insights into the comprehensive utilization of mining solid wastes and mitigate environmental pollution.
Main Methods:
- Literature review of recent advancements in phase change material (PCM) applications using industrial solid wastes.
- Analysis of the properties of FA, slag, and tailings (porosity, mechanical strength) for matrix suitability.
- Investigation of modification treatments for these wastes to support PCMs and prevent leakage.
Main Results:
- Mining wastes like FA, slag, and tailings possess characteristics suitable for developing porous matrices.
- Modification treatments enable these wastes to effectively encapsulate and stabilize phase change materials.
- Successful application of these modified wastes in thermal energy storage systems has been demonstrated.
Conclusions:
- Modified mining solid wastes offer a promising avenue for developing efficient phase change thermal storage materials.
- This approach provides a sustainable solution for managing industrial solid waste and reducing environmental impact.
- Further research can optimize these materials for broader applications in thermal energy storage and waste valorization.
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