Dept. of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign, Newmark Lab, 205 N. Mathews Ave., Urbana, IL 61801, USA.
Bioresour Technol. 2011 Sep;102(17):8295-303. doi: 10.1016/j.biortech.2011.06.041. Epub 2011 Jul 7.
This study explores the influence of wastewater feedstock composition on hydrothermal liquefaction (HTL) biocrude oil properties and physico-chemical characteristics. Spirulina algae, swine manure, and digested sludge were converted under HTL conditions (300°C, 10-12 MPa, and 30 min reaction time). Biocrude yields ranged from 9.4% (digested sludge) to 32.6% (Spirulina). Although similar higher heating values (32.0-34.7 MJ/kg) were estimated for all product oils, more detailed characterization revealed significant differences in biocrude chemistry. Feedstock composition influenced the individual compounds identified as well as the biocrude functional group chemistry. Molecular weights tracked with obdurate carbohydrate content and followed the order of Spirulina<swine manure<digested sludge. A similar trend was observed in boiling point distributions and the long branched aliphatic contents. These findings show the importance of HTL feedstock composition and highlight the need for better understanding of biocrude chemistries when considering bio-oil uses and upgrading requirements.
本研究探讨了废水原料组成对水热液化（HTL）生物油性质和理化特性的影响。螺旋藻藻、猪粪和消化污泥在 HTL 条件下（300°C、10-12 MPa 和 30 分钟反应时间）进行转化。生物油产率范围为 9.4%（消化污泥）至 32.6%（螺旋藻）。尽管所有产物油的预估高位发热值（32.0-34.7 MJ/kg）相似，但更详细的表征揭示了生物油化学性质的显著差异。原料组成影响了所鉴定的个别化合物以及生物油的官能团化学。分子量与顽固碳水化合物含量相关，其顺序为螺旋藻<猪粪<消化污泥。在沸点分布和长支链脂肪含量方面也观察到类似的趋势。这些发现表明 HTL 原料组成的重要性，并强调在考虑生物油用途和升级要求时，需要更好地了解生物油化学性质。
