利用城市污水培养的硫磺矿硫螺旋菌的水热液化。
Hydrothermal liquefaction of Galdieria sulphuraria grown on municipal wastewater.
机构信息
New Mexico State University, Chemical & Materials Engineering, PO Box 30001 MSC 3805, Las Cruces, NM 88003, United States.
Civil Engineering, PO Box 30001 MSC 3CE, Las Cruces, NM 88003, United States.
出版信息
Bioresour Technol. 2019 Nov;292:121884. doi: 10.1016/j.biortech.2019.121884. Epub 2019 Jul 25.
Two strains of Galdieria sulphuraria algae, 5587.1 and SOOS, were grown on municipal wastewater to develop energy-positive treatment systems. Hydrothermal liquefaction (HTL) of 5-10 wt% algal biomass solids was conducted at 310-350 °C for 5-60 min to produce bio-crude oil. HTL product yields and energy recovery were compared to those from previous studies using G. sulphuraria grown on a modified Cyanidium medium. Total bio-crude oil yields were lower (11.2-23.0 wt%) and char yields were higher (22.6-36.4 wt%) for HTL of algae grown on actual wastewater compared with that grown on media (31.4 wt% and 4.8 wt%, respectively), indicating a potential limitation for using yields from media-based studies. High-resolution mass spectroscopy of bio-crude oil provides new insights into differences in composition based on growth media. Energy recovery in total bio-crude oil and char at 350 °C was 17-28% and 14-19%, respectively, for the 5587.1 strain, and 23-27% and 14-25%, respectively, for the SOOS strain.
两种硫球藻（Galdieria sulphuraria）藻株，5587.1 和 SOOS，在城市废水中生长，以开发能源正处理系统。在 310-350°C 下对 5-10wt%的藻生物质固体进行热液液化（HTL），反应时间为 5-60min，以生产生物原油。将 HTL 产物产率和能量回收与之前使用在改良的 Cyanidium 培养基上生长的硫球藻进行的研究进行了比较。与在培养基上生长的藻相比，在实际废水中生长的藻进行 HTL 时，总生物原油产率较低（11.2-23.0wt%），而炭产率较高（22.6-36.4wt%）（分别为 31.4wt%和 4.8wt%），这表明使用基于培养基的研究的产率存在潜在限制。生物原油的高分辨率质谱分析为基于生长培养基的组成差异提供了新的见解。在 350°C 下，5587.1 菌株的总生物原油和炭的能量回收分别为 17-28%和 14-19%，SOOS 菌株的能量回收分别为 23-27%和 14-25%。
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