Das Dharani D, Schnitzer Morris I, Monreal Carlos M, Mayer Paul
Eastern Cereal and Oil Seed Research Centre, Agriculture and Agri-Food Canada, 960 Carling Avenue, Ottawa, ON, Canada K1A 0C6.
Bioresour Technol. 2009 Dec;100(24):6524-32. doi: 10.1016/j.biortech.2009.06.104. Epub 2009 Jul 30.
Our earlier investigations on the chemical composition of biooils derived by the fast pyrolysis of chicken manure revealed the presence of more than 500 compounds. In order to simplify this heterogeneous and complex chemical system, we produced four biooil fractions namely strongly acidic fraction A, weakly acidic fraction B, basic fraction C and neutral fraction D on the basis of their solubilities in aqueous solutions at different pHs. The yield (wt/wt.%) for fraction A was 3%, for fraction B 21.3%, for fraction C 2.4% and for fraction D 32.4%, respectively. The four fractions were analyzed by elemental analyses, Fourier Transform infrared spectrophotometry (FTIR), (1)H and (13)C nuclear magnetic spectroscopy (NMR), and electrospray ionization mass spectrometry (ESI-MS). The major components of the four fractions were saturated and unsaturated fatty acids, N-heterocyclics, phenols, sterols, diols and alkylbenzenes. The pH separation system produced fractions of enhanced chemical homogeneity.
我们早期对鸡粪快速热解所得生物油化学成分的研究表明，其中存在500多种化合物。为了简化这个异质且复杂的化学体系，我们根据它们在不同pH值水溶液中的溶解度，制备了四个生物油馏分，即强酸性馏分A、弱酸性馏分B、碱性馏分C和中性馏分D。馏分A的产率（重量/重量%）为3%，馏分B为21.3%，馏分C为2.4%，馏分D为32.4%。通过元素分析、傅里叶变换红外光谱法（FTIR）、氢核磁共振光谱法（¹H NMR）、碳核磁共振光谱法（¹³C NMR）和电喷雾电离质谱法（ESI-MS）对这四个馏分进行了分析。这四个馏分的主要成分是饱和脂肪酸和不饱和脂肪酸、N-杂环化合物、酚类、甾醇类、二醇类和烷基苯类。pH分离系统产生了化学均匀性增强的馏分。
