Comparative research on deoxy-liquefaction of marine and terrestrial biomasses

Wang, Jiping; Su, Bin; Xie, Yulin; Du, Min Hua; Dai, Wenying; Wen, Yumei; Sun, Xiangyu; Li, Jinhua

doi:10.1016/j.jaap.2018.02.014

Cited by 2 publications

(1 citation statement)

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“…In comparison to the lignocellulosic biomass, S. alfredii was rich in carbohydrates and lipids, which could form aliphatic tails through hydrolysis. 38 The increased contents of aliphatic hydrocarbons at high temperature imply that the deoxygenation of long-aliphatic tails could be enhanced with increasing hydrothermal conversion temperature. Similarly, the contents of phenols in LBOs elevated from 1.44 to 8.24% with increasing temperature from 210 to 300 °C (Figure 3).…”

Section: ■ Materials and Methodsmentioning

confidence: 99%

Hydrothermal Treatment of the Pristine and Contaminated Cd/Zn Hyperaccumulators for Bio-Oil Production and Heavy Metal Separation

Cui

Zhang

et al. 2021

ACS Sustainable Chem. Eng.

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Hydrothermal conversion is a promising technology to dispose of biomass wastes. To achieve the harmless treatment of heavy metal (HM) hyperaccumulators and production of bio-oil, hydrothermal conversion of two types of Sedum alfredii [i.e., uncontaminated S. alfredii (SAL) and the harvested S. alfredii after phytoremediation (SAH)] at 210−300 °C was conducted in this study. Only 0.53−1.59% of Cd and 0.34−5.94% of Zn in SAH migrated to bio-oils, which were much lower than those in hydrochar and the aqueous products. High hydrothermal conversion temperature promoted the bio-oil yield, and the S. alfredii-derived bio-oils showed considerable higher heating values (32.07−33.83 MJ/kg). The main components of bio-oils were aliphatic hydrocarbons, followed by oxygen-containing compounds (e.g., alcohols, phenols, and ketones/aldehydes) and nitrogencontaining compounds. The bio-oils derived from SAL contained a higher content of aliphatic hydrocarbons (56.39−60.11%) and N-containing compounds (9.03−15.17%), while the SAH-derived bio-oils had more ketones/aldehydes (15.17−19.79%), which could be ascribed to the component difference of feedstocks and the catalytic effect of Zn. Moreover, the distillable fraction (boiling point <538 °C) in the bio-oils was up to 79.89−86.90%. These results suggest that hydrothermal conversion of S. alfredii could be a promising technique for the HM separation and value-added bio-oil production.

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Section: ■ Materials and Methodsmentioning

confidence: 99%