超声抽提酸沉淀螺旋藻蛋白制取生物质油的研究

为提高螺旋藻利用效率,采用先提取螺旋藻的主要成分蛋白,再利用催化加氢技术脱去蛋白的N,S,O元素,重组蛋白的碳链形成烃类化合物即生物质油的方法.将质量分数为10％的藻泥溶液,经600W功率超声破碎10 min后以稀硫酸调节溶液pH值至4.0,离心分离后烘干沉淀得到藻蛋白,经过高温高压催化加氢处理得到生物质油,最高产率为40％.产物生物质油为透明状液体,热值45.3 kJ/g,C,H元素的总质量分数为97.7％,而且产率有进一步提高的空间.

Research of bio-oil production from spirulina protein prepared through ultrasonic extraction and acid precipitation

In order to improve the utilization efficiency of spirulina, algae protein is extracted firstly, catalytic hydrogenation technology then is used. So elements N, S and 0 are removed, and carbon chain is recombined. Hydrocarbon compounds are formed during this recombination. Algae protein is obtained through centrifugal separation and drying after algae solution is ultrasoniced with 600 W and the pH is adjusted to 4. 0 by adding sulphuric acid. Bio-oil is got via catalytic hydrogenation processing with high temperature and high pressure. The highest bio-oil production rate is 40%. As transparent liquid, calorific value is 45.3 kJ/g, and the total content of C, H elements reaches to 97.7% and the yield has space to be further improved.