Hydrothermal liquefaction of Litsea cubeba seed to produce bio-oils.

Hydrothermal liquefaction (HTL) of Litsea cubeba seed was conducted over different temperature (250-350°C), time (30-120 min), reactor loading (0.5-4.5 g) and Na2CO3 loading (0-10 wt.%). Temperature was the most influential factor affecting the yields of product fractions. The highest bio-oil yield of 56.9 wt.% was achieved at 290°C, 60 min, and reactor loading of 2.5 g. The presence of Na2CO3 favored the conversion of the feedstock but suppressed the production of bio-oil. The higher heating values of the bio-oil were estimated at around 40.8 MJ/kg. The bio-oil, which mainly consisted of toluene, 1-methyl-2-(1-methylethyl)-benzene, fatty acids, fatty acid amides, and fatty acid esters, had a smaller total acid number than that of the oil obtained from the direct extraction of the starting material. It also contained nitrogen that was far below the bio-oil produced from the HTL of microalgae, making it more suitable for the subsequent refining.

[1]  N. Muradov,et al.  Production and characterization of Lemna minor bio-char and its catalytic application for biogas reforming , 2012 .

[2]  Paul Chen,et al.  Catalytic pyrolysis of microalgae and their three major components: carbohydrates, proteins, and lipids. , 2013, Bioresource technology.

[3]  Xiaojiao Han,et al.  Chemical Composition of Essential Oils of Litsea cubeba Harvested from Its Distribution Areas in China , 2012, Molecules.

[4]  P. Savage,et al.  Catalytic hydrotreatment of crude algal bio-oil in supercritical water , 2011 .

[5]  K. Das,et al.  Comparative Evaluation of Thermochemical Liquefaction and Pyrolysis for Bio-Oil Production from Microalgae , 2011 .

[6]  Abolghasem Shahbazi,et al.  Oil Production from Duckweed by Thermochemical Liquefaction , 2010 .

[7]  Sandeep Kumar,et al.  Biocrude Production from Switchgrass Using Subcritical Water , 2009 .

[8]  A. Ross,et al.  Hydrothermal liquefaction of the brown macro-alga Laminaria saccharina: effect of reaction conditions on product distribution and composition. , 2011, Bioresource technology.

[9]  P. Biller,et al.  Potential yields and properties of oil from the hydrothermal liquefaction of microalgae with different biochemical content. , 2011, Bioresource technology.

[10]  P. Duan,et al.  Catalytic upgrading of crude algal oil using platinum/gamma alumina in supercritical water , 2013 .

[11]  U. Vix,et al.  Product Standards for Pyrolysis Products for Use as Fuel in Industrial Firing Plants , 1991 .

[12]  L. Rosendahl,et al.  Hydrothermal liquefaction of biomass: A review of subcritical water technologies , 2011 .

[13]  Phillip E. Savage,et al.  Hydrothermal Liquefaction and Gasification of Nannochloropsis sp. , 2010 .

[14]  Shicheng Zhang,et al.  Hydrothermal Liquefaction of Macroalgae Enteromorpha prolifera to Bio-oil , 2010 .

[15]  S. Kersten,et al.  Effect of Temperature in Fluidized Bed Fast Pyrolysis of Biomass: Oil Quality Assessment in Test Units , 2010 .

[16]  Phillip E. Savage,et al.  Hydrothermal Liquefaction of a Microalga with Heterogeneous Catalysts , 2011 .

[17]  S. Roussis,et al.  Thermal Treatment of Crude Algae Oils Prepared Under Hydrothermal Extraction Conditions , 2012 .

[18]  Jianhui He,et al.  Structural analysis of bio-oils from sub-and supercritical water liquefaction of woody biomass , 2007 .

[19]  M. Isman,et al.  Comparative toxicity of essential oils of Litsea pungens and Litsea cubeba and blends of their major constituents against the cabbage looper, Trichoplusia ni. , 2009, Journal of agricultural and food chemistry.

[20]  P. Duan,et al.  Hydrothermal processing of duckweed: effect of reaction conditions on product distribution and composition. , 2013, Bioresource technology.

[21]  Abolghasem Shahbazi,et al.  Bio-oil production and upgrading research: A review , 2012 .

[22]  Shuping Zou,et al.  Thermochemical Catalytic Liquefaction of the Marine Microalgae Dunaliella tertiolecta and Characterization of Bio-oils , 2009 .

[23]  Paul T. Williams,et al.  Hydrothermal reactions of sodium formate and sodium acetate as model intermediate products of the sodium hydroxide-promoted hydrothermal gasification of biomass , 2010 .

[24]  Chien-Kuang Chen,et al.  Quaternary Alkaloids from Litsea cubeba and Cryptocarya konishii , 1993 .

[25]  D. Barreiro,et al.  Hydrothermal liquefaction (HTL) of microalgae for biofuel production: State of the art review and future prospects , 2013 .

[26]  Sascha R.A. Kersten,et al.  Hydrothermal Treatment (HTT) of Microalgae: Evaluation of the Process As Conversion Method in an Algae Biorefinery Concept , 2012 .

[27]  M. Hanna,et al.  THERMOCHEMICAL BIOMASS GASIFICATION—A REVIEW OF THE CURRENT STATUS OF THE TECHNOLOGY , 2009 .

[28]  T. Minowa,et al.  Possibility of renewable energy production and CO2 mitigation by thermochemical liquefaction of microalgae , 1999 .

[29]  Jacob A. Moulijn,et al.  Catalytic pyrolysis of microalgae to high-quality liquid bio-fuels , 2011 .

[30]  Reaction of different carbonaceous materials in alkaline hydrothermal media for hydrogen gas production , 2011 .