**4. Conclusions**

Three energy crops and reference fuels (agricultural and woody biomass and bituminous coal) were combusted in a bench-scale CFB, and the effect of the oxidizing atmosphere and fuel type on the composition of flue gases was studied. The most important conclusions from our study are as follows:


**Author Contributions:** Conceptualization, M.K.-G., A.L. and T.C.; methodology, M.K.-G. and T.C.; formal analysis, M.K.-G.; investigation, M.K.-G. and T.C.; writing—original draft preparation, M.K.-G., A.L. and T.C.; writing—review and editing, M.K.-G., A.L. and T.C. All authors have read and agreed to the published version of the manuscript.

**Funding:** The work was funded by the statute subvention of Czestochowa University of Technology, Faculty of Mechanical Engineering and Computer Science (BS/PB-1-100-3011/2022/P).

**Institutional Review Board Statement:** Not applicable.

**Informed Consent Statement:** Not applicable.

**Data Availability Statement:** Not applicable.

**Acknowledgments:** We gratefully thank Krzysztof Wolski for his assistance in the experimental work.

**Conflicts of Interest:** The authors declare no conflict of interest.
