Experimental research on the thermochemical catalytic liquefaction of bloom-forming cyanobacteria (BC) was carried out to determine the effects of solvent, catalyst, reaction time, temperature, the ratio of raw material to solvent, and catalyst dosage on liquefaction performance. The liquefaction conditions were optimized by central composite design (CCD) experiments as follows: concentrated H₂SO₄ content, 6.6%; reaction temperature, 175 °C; reaction time, 30 min; and ratio of material to solvent, 1:4. The liquefaction yield and oil yield (chloroform phase) reached 93.85% and 37.96% under the above-mentioned conditions. The ultimate analysis and calorific value of the oil were determined, and the chemical composition of the oil was investigated using gas chromatography–mass spectrometry (GC-MS) techniques and Fourier-transform infrared (FT-IR) spectroscopy. The analysis of bio-oil composition showed that bio-oil from BC mainly contains ethyl palmitate, which is the main component of palm oil biodiesel, with a heating value of 32.7 MJ/kg.

中文翻译：

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形成蓝藻的热化学催化液化生产生物油：使用响应面法（RSM）的优化

对形成水华的蓝细菌（BC）进行热化学催化液化的实验研究，确定溶剂，催化剂，反应时间，温度，原料与溶剂的比例以及催化剂用量对液化性能的影响。通过中央复合设计（CCD）实验优化了液化条件，如下所示：浓H ₂ SO ₄含量6.6％; 反应温度175℃。反应时间30分钟；材料与溶剂的比例为1：4。在上述条件下，液化收率和油收率（氯仿相）分别达到93.85％和37.96％。确定了油的最终分析和热值，并使用气相色谱-质谱（GC-MS）技术和傅里叶变换红外（FT-IR）光谱研究了油的化学成分。对生物油成分的分析表明，来自卑诗省的生物油主要包含棕榈酸乙酯，这是棕榈油生物柴油的主要成分，发热量为32.7 MJ / kg。