Densification of Yak Manure Biofuel Pellets and Evaluation of Parameters: Effects on Properties

Jianbiao Liu, Xuya Jiang, Yanhao Yuan, Huanhuan Chen, Wenbin Zhang, Hongzhen Cai and Feng Gao
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Jianbiao Liu: School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255000, China
Xuya Jiang: School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255000, China
Yanhao Yuan: School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255000, China
Huanhuan Chen: School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255000, China
Wenbin Zhang: School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255000, China
Hongzhen Cai: School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255000, China
Feng Gao: Zibo Energy Research Institute, Zibo 255000, China

Energies, 2022, vol. 15, issue 5, 1-14

Abstract: This study was first conducted to comprehensively investigate the potential of yak manure as a raw material to prepare fuel pellets. The effect of different parameters such as binder, pressure, and moisture content on pellet density and diametric compressing strength was investigated using a laboratory single pelleting press unit. Results showed that increasing the pressure can help to obtain high-quality fuel pellets. The pellet properties (density and diametric compressing strength) initially increased and then decreased with moisture content increase. By contrast, binder was not identified to promote density and diametric compressing strength. The parameters were optimized using the response surface method with central composite design to obtain high-quality pellets. In conclusion, the use of yak manure as a raw material to make fuels can be considered a sustainable approach and can effectively be used to fulfill the energy and heating requirements of rural areas.

Keywords: yak manure; pelletization; parameters; physicochemical properties (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
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