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Related Experiment Video

Updated: May 16, 2025

A Uniaxial Compression Experiment with CO2-Bearing Coal Using a Visualized and Constant-Volume Gas-Solid Coupling Test System

A Uniaxial Compression Experiment with CO2-Bearing Coal Using a Visualized and Constant-Volume Gas-Solid Coupling Test System

Published on: June 12, 2019

Feasibility study on coal based solid waste as a soil additive.

Nan Guo^1,2, Lu Bai^3,4, Yingming Yang^3,4

¹State Key Laboratory of Water Resource Protection and Utilization in Coal Mining, Beijing, 102211, China. 20089952@ceic.com.

Scientific Reports

|April 1, 2025

Summary

This summary is machine-generated.

Utilizing coal gangue, fly ash, and coal gasification slag as soil additives can transform waste into valuable resources. A low-content mixture of these materials enhances soil nutrients, offering an eco-friendly solution for mining areas.

Keywords:

Coal gangue Coal gasification slag Fly ash Nutrient Soil

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Last Updated: May 16, 2025

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Physical, Chemical and Biological Characterization of Six Biochars Produced for the Remediation of Contaminated Sites

Physical, Chemical and Biological Characterization of Six Biochars Produced for the Remediation of Contaminated Sites

Published on: November 28, 2014

Area of Science:

Environmental Science
Geology
Materials Science

Background:

Extensive coal resource exploitation generates significant solid waste, including coal gangue, fly ash, and coal gasification slag.
Indiscriminate disposal of these wastes leads to land occupation and ecological environmental pollution.
Transforming waste into valuable resources is crucial for sustainable waste management.

Purpose of the Study:

To explore the feasibility of using coal gangue, fly ash, and coal gasification slag as soil additives for improving mining areas.
To evaluate the potential of these wastes as environmentally friendly soil conditioners.
To determine optimal additive ratios for soil improvement.

Main Methods:

Experimental verification of coal gangue, fly ash, and coal gasification slag using physical and chemical methods.
Analysis of soil properties after the addition of mixed waste materials.
Comparative assessment of soil nutrient enhancement.

Main Results:

Coal gangue, fly ash, and coal gasification slag are confirmed as viable soil additives.
A specific mixture (4% coal gangue, 2% fly ash, 1% coal gasification slag) significantly improved soil nutrients.
The optimized additive mixture demonstrated potential as an environmentally friendly soil matrix.

Conclusions:

Coal-based solid wastes can be effectively repurposed as soil improvement agents.
Low-content application of these wastes offers a sustainable solution for mining land remediation.
This approach contributes to waste valorization and ecological restoration in degraded areas.