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Energies
Volume 18
Issue 2
10.3390/en18020444
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This is an early access version, the complete PDF, HTML, and XML versions will be available soon.
Review

Coal Gangue Utilization: Applications, Challenges, and Sustainable Development Strategies

by
Yinghui Sun
1,†,
Bohao Bai
1,†,
Xu Yang
1,
Shujun Zhu
2,
Jilin Tian
2,
Zhuozhi Wang
1,*,
Li Xu
3,*,
Lianfei Xu
1 and
Boxiong Shen
1
1
School of Chemical Engineering, Hebei University of Technology, Tianjin 300401, China
2
Shanxi Key Laboratory of Coal Flexible Combustion and Thermal Conversion, Datong 037000, China
3
Anhui Special Equipment Inspection Institute, 45 Dalian Road, Hefei 230051, China
*
Authors to whom correspondence should be addressed.
†
These authors contributed equally to this work.
Energies 2025, 18(2), 444; https://doi.org/10.3390/en18020444
Submission received: 18 December 2024 / Revised: 14 January 2025 / Accepted: 17 January 2025 / Published: 20 January 2025
(This article belongs to the Special Issue Advanced Energy Technologies and Energy Savings: Low Emissions and High Efficiency)
Versions Notes

Abstract

Coal gangue is a kind of typical by-product emitted during the coal mining and washing process. With the increase in coal resource utilization, a large amount of coal gangue was not reasonably utilized, causing environmental pollution and resource waste. The main purpose of this article is to introduce the surface structural features and compositional characteristics of coal gangue and to summarize the utilization of coal gangue in the fields of building materials, energy production, agricultural utilization, and high-value-added areas such as catalysts and adsorbents. Secondly, this review discussed the environmental challenges and technical difficulties derived from the process of coal gangue utilization and how to solve these problems through innovative methods and technological improvements. Finally, the article proposed the development direction and strategies for the future resource utilization of coal gangue, emphasizing the importance of coal gangue as a sustainable resource and its significant role in achieving a circular economy for reducing environmental pollution. By analyzing the potentiality of coal gangue for resource utilization systematically, this article aims to provide valuable references and insights for researchers and decision-makers in related fields.
Keywords: coal gangue; environmental impact; energy applications; high-value products coal gangue; environmental impact; energy applications; high-value products

Share and Cite

MDPI and ACS Style

Sun, Y.; Bai, B.; Yang, X.; Zhu, S.; Tian, J.; Wang, Z.; Xu, L.; Xu, L.; Shen, B. Coal Gangue Utilization: Applications, Challenges, and Sustainable Development Strategies. Energies 2025, 18, 444. https://doi.org/10.3390/en18020444

AMA Style

Sun Y, Bai B, Yang X, Zhu S, Tian J, Wang Z, Xu L, Xu L, Shen B. Coal Gangue Utilization: Applications, Challenges, and Sustainable Development Strategies. Energies. 2025; 18(2):444. https://doi.org/10.3390/en18020444

Chicago/Turabian Style

Sun, Yinghui, Bohao Bai, Xu Yang, Shujun Zhu, Jilin Tian, Zhuozhi Wang, Li Xu, Lianfei Xu, and Boxiong Shen. 2025. "Coal Gangue Utilization: Applications, Challenges, and Sustainable Development Strategies" Energies 18, no. 2: 444. https://doi.org/10.3390/en18020444

APA Style

Sun, Y., Bai, B., Yang, X., Zhu, S., Tian, J., Wang, Z., Xu, L., Xu, L., & Shen, B. (2025). Coal Gangue Utilization: Applications, Challenges, and Sustainable Development Strategies. Energies, 18(2), 444. https://doi.org/10.3390/en18020444

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