College of Environmental and Resource Sciences, ZheJiang University, 886th YuHangTang Ave, HangZhou 310058, China.
College of Environmental and Resource Sciences, ZheJiang University, 886th YuHangTang Ave, HangZhou 310058, China; China Academy of West Region Development, ZheJiang University, 886th YuHangTang Ave, HangZhou 310058, China.
Bioresour Technol. 2014 Jul;163:143-51. doi: 10.1016/j.biortech.2014.04.015. Epub 2014 Apr 15.
Hydrothermal liquefaction of Nannochloropsis salina (N. salina) and larvae-vermicompost were conducted under both non-hydrogenating and hydrogenating subcritical conditions using H2 and Ni-Mo/Al2O3. Hydrogenation raised biocrude yields from 33.2% to 43.5% (vermicompost) and 55.6% to 78.5% (N. salina), whereas high heat values increased from 32.89 to 34.24 MJ/kg (vermicompost) and 36.30 to 37.53 MJ/kg (N. salina). Compared with the non-hydrogenated HTL process, the contents of acids, amides, phenols, and alcohols decreased, whereas hydrocarbons content increased. More branched cyclic nitrogenous compounds were detected in the hydrogenated biocrudes, whereas the aromatic/hetero-aromatic functionality was somewhat decreased. Smaller molecular weights and polydispersity index of the hydrogenated biocrudes were also detected. Results show that hydrogenation enhanced the removal of hydrophilic functional groups and the stabilization of radicals, thereby leading to the inhibition of loss of mass toward liquid and gaseous products and the upgrading of oil quality.
水热液化法分别在非加氢和加氢（H2 和 Ni-Mo/Al2O3）亚临界条件下，以盐生杜氏藻（N. salina）和幼虫堆肥为原料进行。加氢使生物原油产率从 33.2%提高到 43.5%（堆肥）和 55.6%到 78.5%（盐生杜氏藻），高位热值从 32.89 提高到 34.24MJ/kg（堆肥）和 36.30 提高到 37.53MJ/kg（盐生杜氏藻）。与非加氢 HTL 工艺相比，加氢后生物原油中酸、酰胺、酚和醇的含量降低，而烃类含量增加。在加氢生物原油中检测到更多支化环状含氮化合物，而芳烃/杂芳烃功能略有降低。加氢生物原油的分子量更小，多分散性指数也更高。结果表明，加氢可以增强亲水性官能团的去除和自由基的稳定，从而抑制质量向液体和气体产物的损失，并提高油质。
