水热液化法处理高脂质和低脂质藻类：质量和能量平衡。
Hydrothermal liquefaction of high- and low-lipid algae: Mass and energy balances.
机构信息
Department of Chemical and Materials Engineering, New Mexico State University, P.O. Box 30001 MSC 3805, Las Cruces, NM 88003, USA.
Department of Civil Engineering, New Mexico State University, P.O. Box 30001 MSC 3CE, Las Cruces, NM 88003, USA.
出版信息
Bioresour Technol. 2018 Jun;258:158-167. doi: 10.1016/j.biortech.2018.02.100. Epub 2018 Feb 24.
Hydrothermal liquefaction (HTL) of high-lipid microalgae Nannochloropsis salina (N. salina) and low-lipid microalgae Galdieria sulphuraria (G. sulphuraria) were run under subcritical conditions (310-350 °C and 10-17 MPa) in a 1.8 L batch autoclave system. HTL mass and energy balances for both species were compared under different operating conditions to predict the optimum reaction conditions for new algae strains based on their feedstock composition. Bio-crude oils and chars were characterized by bomb calorimetry, elemental analysis, inductively coupled plasma optical emission spectrometry (ICP-OES), and thermogravimetric analysis (TGA). Under the optimized conditions, 59 wt% and 31 wt% bio-crude oil yields were obtained from HTL of N. salina and G. sulphuraria, while 85% and 59% of the feedstock energy were partitioned into N. salina-derived and G. sulphuraria-derived bio-crude oils, respectively. More favorable energy balances were related to shorter reaction times and higher algal solid contents.
采用 1.8L 间歇式高压釜系统，在亚临界条件（310-350°C 和 10-17 MPa）下对高脂微藻盐生杜氏藻（N. salina）和低脂微藻硫球藻（G. sulphuraria）进行水热液化（HTL）。根据不同操作条件下两种微藻的 HTL 质量和能量平衡，比较了它们的最佳反应条件，以期基于其原料组成预测新型藻株的最佳反应条件。采用弹式量热法、元素分析、电感耦合等离子体发射光谱（ICP-OES）和热重分析（TGA）对生物原油和生物焦进行了表征。在优化条件下，从 HTL 中分别获得了 59wt%和 31wt%的生物原油产率，而 N. salina 和 G. sulphuraria 的原料能量分别有 85%和 59%分配到 N. salina 衍生和 G. sulphuraria 衍生的生物原油中。更有利的能量平衡与较短的反应时间和较高的藻类固体含量有关。
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