Open AccessSTEAM REFORMING OF UPGRADED BIO-OIL AQUEOUS PHASE FRACTION FROM SUNFLOWER SEED HULLS: THERMODYNAMIC ANALYSIS
Author(s) -
Yanina Paola Maidana,
Eduardo Miguel Izurieta,
Andrés Iván Casoni,
María Alicia Volpe,
Eduardo López,
Marisa Noemí Pedernera
Publication year - 2019
Publication title -
latin american applied research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.123
H-Index - 23
eISSN - 1851-8796
pISSN - 0327-0793
DOI - 10.52292/j.laar.2019.210
Subject(s) - sunflower oil , fraction (chemistry) , lignocellulosic biomass , biomass (ecology) , pyrolysis , pulp and paper industry , yield (engineering) , acetic acid , biofuel , sunflower seed , materials science , pyrolysis oil , steam reforming , waste management , chemical engineering , chemistry , hydrogen , sunflower , hydrogen production , organic chemistry , agronomy , engineering , composite material , food science , biology
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.