Biological Engineering Program, Department of Natural Resource and Environmental Design, North Carolina A&T State University, Greensboro, NC, USA.
Bioresour Technol. 2011 Jan;102(2):1928-32. doi: 10.1016/j.biortech.2010.08.026. Epub 2010 Aug 11.
The aim of this work was to investigate the principal structural and physico-chemical changes of bio-oils associated with liquefaction of swine manure with crude glycerol and its key fraction, free fatty acids. Bio-oils have been obtained from liquefaction processes at 340 °C. They were subjected to various physico-chemical characterization methods. FTIR data indicated a reduction in aliphatic structures and an increase in more oxidized and, probably, more polycondensed aromatic components resulting from the addition of crude glycerol to swine manure. GC-MS data indicated that the addition of crude glycerol facilitated the esterification reaction in sub-critical water to convert organic acids contained in bio-oil into various kinds of esters. The dynamic viscosity of bio-oil decreased dramatically by adding crude glycerol into the swine manure.
本工作旨在研究与猪粪与粗甘油及其关键馏分游离脂肪酸液化相关的生物油的主要结构和物理化学变化。生物油是在 340°C 的液化过程中得到的。它们经过了各种物理化学特性的分析方法。FTIR 数据表明，由于粗甘油的加入，脂肪族结构减少，更多氧化和可能更缩合的芳族成分增加。GC-MS 数据表明，粗甘油的加入促进了亚临界水中的酯化反应，将生物油中含有的有机酸转化为各种酯。向猪粪中加入粗甘油可显著降低生物油的动态粘度。
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