Department of Environment and Energy, Sejong University, Seoul 05006, South Korea.
Department of Animal Biotechnology and Environment, National Institute of Animal Science, Rural Development Administration, Wanju-gun 55365, South Korea.
Bioresour Technol. 2017 Nov;244(Pt 1):810-815. doi: 10.1016/j.biortech.2017.08.044. Epub 2017 Aug 12.
This study laid an emphasis on the possible employment of biochar generated from pyrolysis of chicken manure to establish a green platform for producing biodiesel. To this end, the pseudo-catalytic transesterification reaction using chicken manure biochar and waste cooking oil was investigated. Compared with a commercial porous material (SiO), chicken manure biochar generated from 350°C showed better performance, resulting in 95.6% of the FAME yield at 350°C. The Ca species in chicken manure biochar imparted strong catalytic capability by providing the basicity for transesterification. The identified catalytic effect also led to the thermal cracking of unsaturated FAMEs, which decreased the overall FAME yield. For example, 40-60% of converted FAMEs were thermally degraded. To avoid undesirable thermal cracking arising from the high content of the Ca species in chicken manure biochar, the fabrication of chicken manure biochar at temperatures ≥350°C was highly recommended.
本研究强调了利用鸡粪热解产生的生物炭为生产生物柴油建立绿色平台的可能性。为此，研究了利用鸡粪生物炭和废食用油进行假催化酯交换反应。与商业多孔材料（SiO）相比，在 350°C 下生成的鸡粪生物炭表现出更好的性能，在 350°C 下的 FAME 产率达到 95.6%。鸡粪生物炭中的 Ca 物种通过提供酯交换反应的碱性赋予了强催化能力。所鉴定的催化作用还导致不饱和 FAME 的热裂解，从而降低了整体 FAME 产率。例如，转化的 FAME 中有 40-60%发生了热降解。为了避免鸡粪生物炭中高含量 Ca 物种引起的不良热裂解，建议在温度≥350°C 下制备鸡粪生物炭。
