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Efficient utilization of coal slime using anaerobic fermentation technology.

Hongyu Guo¹, Shufeng Zhao², Daping Xia²

¹School of Energy Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, China; Collaborative Innovation Center of Coalbed Methane and Shale Gas for Central Plains Economic Region, Jiaozuo 454000, China.

Bioresource Technology

|April 7, 2021

Summary

Anaerobic fermentation converts coal slime organic matter into biomethane, primarily through CO2 reduction. This process enhances coal slime dehydration and combustion performance, offering a novel resource utilization strategy.

Keywords:

Anaerobic fermentation Biomethane Coal slime Efficient utilization

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Area of Science:

Environmental Science
Biotechnology
Resource Engineering

Background:

Coal slime presents a significant waste disposal challenge.
Efficient resource utilization and environmental protection are critical.
Existing coal slime treatment methods have limitations.

Purpose of the Study:

To explore the feasibility of anaerobic fermentation for coal slime utilization.
To analyze the biodegradation of coal slime and its impact on utilization characteristics.
To evaluate the potential for biomethane production and improved combustion.

Main Methods:

Biogas production simulations.
Drying dehydration analysis.
Thermogravimetric (TG) analysis.

Main Results:

Organic matter in coal slime is convertible to biomethane via CO2 reduction.
Lower metamorphic degree and higher ash content facilitate dehydration.
Biodegradation improves coal slime combustion performance.

Conclusions:

Anaerobic fermentation is a viable technology for coal slime utilization.
Biodegradation enhances both resource recovery (biomethane) and waste properties (combustion).
This research offers a new approach for sustainable coal slime management.