Kaur Lovepreet, Singh Jayant, Ashok Alaknanda, Kumar Vijay
Department of Farm Machinery & Power Engineering, G B Pant University of Agriculture & Technology, Pantnagar, Uttarakhand, 263145, India.
Department of Electrical Engineering, G B Pant University of Agriculture & Technology, Pantnagar, Uttarakhand, 263145, India.
Sci Rep. 2024 Apr 24;14(1):9421. doi: 10.1038/s41598-024-57843-z.
This study aimed to optimize pyrolysis conditions to maximize bio-oil yield from cattle dung, a waste product of livestock practices. Pyrolysis of cattle dung was carried out in batch type reactor. The pyrolysis process was optimized using a central composite design in response surface methodology, with conversion parameters such as pyrolysis temperature, vapor cooling temperature, residence time, and gas flow rate taken into account. The cattle dung bio-oil was analyzed using gas chromatography/mass spectroscopy (GC/MS), an elemental analyzer, a pH probe, and a bomb calorimeter. Furthermore, the ASTM standard procedures were used to determine the bio-fuel characteristics. The optimized conditions were found to be a pyrolysis temperature of 402 °C, a vapor cooling temperature of 2.25 °C, a residence time of 30.72 min, and a gas flow rate of 1.81 l min, resulting in a maximum bio-oil yield of 18.9%. According to the findings, the yield of bio-oil was predominantly affected by pyrolysis temperature and vapor cooling temperature. Moreover, the bio-oil that was retrieved was discovered to be similar to conventional liquid fuels in numerous ways.
本研究旨在优化热解条件，以最大限度地提高牛粪（畜牧养殖的一种废弃物）的生物油产量。牛粪热解在间歇式反应器中进行。采用响应面法中的中心复合设计对热解过程进行优化，考虑了热解温度、蒸汽冷却温度、停留时间和气体流速等转化参数。使用气相色谱/质谱联用仪（GC/MS）、元素分析仪、pH探头和弹式量热计对牛粪生物油进行分析。此外，采用ASTM标准程序来测定生物燃料特性。发现优化条件为热解温度402℃、蒸汽冷却温度2.25℃、停留时间30.72分钟和气体流速1.81升/分钟，生物油最大产量为18.9%。根据研究结果，生物油产量主要受热解温度和蒸汽冷却温度影响。此外，回收的生物油在许多方面与传统液体燃料相似。
