STEAM REFORMING OF UPGRADED BIO-OIL AQUEOUS PHASE FRACTION FROM SUNFLOWER SEED HULLS: THERMODYNAMIC ANALYSIS

This work focuses on the study of hydrogen production process departing from waste lignocellulosic biomass. The bio-oil was first obtained by non-catalytic fast pyrolysis of sunflower seed hulls. Subsequently, it was upgraded to reduce the concentration of higher molecular weight compounds by water addition and mixing. A 1/1 bio-oil:water ratio was selected here. Later, a thermodynamic analysis based on free energy minimization was profited to study the steam reforming process of the upgraded bio-oil sample. The influence of the operation temperature on the reforming was analyzed. The highest hydrogen yields were obtained at ~740°C. A comparison with acetic acid used as model compound of the bio-oil is included. Results show that acetic acid is not a good approximation of a real aqueous phase of upgraded bio oil fraction. The study concludes with an analysis on the energetic efficiency, showing that its maximum is presented at lower temperatures than the maximum yield, due to the thermal requirements of preheating.

[1]  C. Tsouris,et al.  Separation of Switchgrass Bio-Oil by Water/Organic Solvent Addition and pH Adjustment , 2016 .

[2]  J. Bilbao,et al.  Thermodynamic comparison between bio-oil and ethanol steam reforming , 2015 .

[3]  M. Laborde,et al.  Production of hydrogen by catalytic steam reforming of oxygenated model compounds on Ni-modified supported catalysts. Simulation and experimental study , 2015 .

[4]  R. Rabelo-Neto,et al.  Thermodynamic analysis and reaction routes of steam reforming of bio-oil aqueous fraction , 2015 .

[5]  A. Jensen,et al.  Steam reforming of cyclic model compounds of bio-oil over Ni-based catalysts: Product distribution and carbon formation , 2015 .

[6]  N. Kockmann,et al.  Thermodynamic analysis of acetic acid steam reforming for hydrogen production , 2015 .

[7]  M. Volpe,et al.  Pyrolysis of sunflower seed hulls for obtaining bio-oils. , 2015, Bioresource technology.

[8]  E. Assaf,et al.  Catalytic steam reforming of acetic acid as a model compound of bio-oil , 2014 .

[9]  J. Bilbao,et al.  Hydrogen production by steam reforming of bio-oil/bio-ethanol mixtures in a continuous thermal-catalytic process , 2014 .

[10]  Q. Qin,et al.  Thermodynamic and Experimental Study on the Steam Reforming Processes of Bio‐oil Compounds for Hydrogen Productio , 2014 .

[11]  Q. Xu,et al.  Mechanism of Hydrogen Production by the Catalytic Steam Reforming of Bio-oil , 2013 .

[12]  J. Bilbao,et al.  Catalysts of Ni/α-Al2O3 and Ni/La2O3-αAl2O3 for hydrogen production by steam reforming of bio-oil aqueous fraction with pyrolytic lignin retention , 2013 .

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

[14]  D. Meier,et al.  Recovery of acetic acid from an aqueous pyrolysis oil phase by reactive extraction using tri-n-octylamine , 2011 .

[15]  Ronghou Liu,et al.  Steam reforming of bio-oil from rice husks fast pyrolysis for hydrogen production. , 2011, Bioresource technology.

[16]  I. L. Muller,et al.  Hydrogen production by sorption enhanced steam reforming of oxygenated hydrocarbons (ethanol, glycer , 2011 .

[17]  Chang-feng Yan,et al.  Hydrogen production from bio-oil aqueous fraction with in situ carbon dioxide capture , 2010 .

[18]  Prasant Kumar Rout,et al.  Production of first and second generation biofuels: A comprehensive review , 2010 .

[19]  A. Avci,et al.  Thermodynamic analysis of steam assisted conversions of bio-oil components to synthesis gas , 2009 .

[20]  Fuchen Wang,et al.  Hydrogen production via catalytic steam reforming of fast pyrolysis bio-oil in a two-stage fixed bed reactor system , 2008 .

[21]  Claude Mirodatos,et al.  Hydrogen production from biomass-derived oil over monolithic Pt- and Rh-based catalysts using steam reforming and sequential cracking processes , 2008 .

[22]  Angeliki A. Lemonidou,et al.  Thermodynamic analysis of hydrogen production via autothermal steam reforming of selected components of aqueous bio-oil fraction , 2007 .

[23]  K. Takanabe,et al.  Steam reforming of acetic acid as a biomass derived oxygenate: Bifunctional pathway for hydrogen formation over Pt/ZrO2 catalysts , 2006 .

[24]  R. Bilbao,et al.  Hydrogen Production by Steam Reforming of Bio-Oil Using Coprecipitated Ni−Al Catalysts. Acetic Acid as a Model Compound , 2005 .

[25]  Dietrich Meier,et al.  Characterization of the water-insoluble fraction from pyrolysis oil (pyrolytic lignin). Part I. PY–GC/MS, FTIR, and functional groups , 2001 .

[26]  Daniel Montané,et al.  Biomass to hydrogen via fast pyrolysis and catalytic steam reforming of the pyrolysis oil or its fractions , 1996 .