Journal
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
Volume 10, Issue -, Pages -Publisher
FRONTIERS MEDIA SA
DOI: 10.3389/fbioe.2022.1076814
Keywords
microbial desulfurization; response surface methodology; experimental optimization; plackett-burman design method; spontaneous combustion
Funding
- Education Commission of Liaoning Province
- Natural Science Foundation Program of Liaoning Province
- [LJ2020JCL002]
- [2022-MS-395]
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In this study, microbial desulfurization technology was used to reduce the sulfur content in coal and reduce the risk of spontaneous combustion during storage and transportation. By optimizing the conditions and determining the main factors, the desulfurization effect was studied and predicted.
To reduce the risk of spontaneous combustion during coal storage and transportation, microbial desulfurization technology is used to reduce the content of inorganic sulfur in coal. A strain of Aciditithiobacillus ferrooxidans was purified from coal mine water in Datong, Shanxi Province, and its desulfurization test conditions were optimized. Taking the inorganic sulfur removal rate of coal as the response value. The Plackett-Burman design method was used to screen the main factors affecting the response value. And the response surface method was used to establish the continuous variable surface model to determine the interaction between the factors. The results show that the three main factors affecting the response value and their significance order are temperature > coal particle size > desulfurization time, and the interaction between temperature and coal particle size has the greatest effect. When the temperature is 29.50 degrees C, the coal size is 100 mesh, and the desulfurization time is 11.67 days, the desulfurization effect is the best, and the removal rate of inorganic sulfur can reach 79.78%, which is close to the predicted value, and the regression effect is wonderful.
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