Journal of Fundamentals of Renewable Energy and Applications
Open Access
ISSN: 2090-4541
+44 1300 500008
ISSN: 2090-4541
+44 1300 500008
Parvana Aksoy1, Mehmet Unsal1, Haydar Livatyali2 and Alper Onoglu3
Scientific Tracks Abstracts: J Fundam Renewable Energy Appl
The CatLiq process is a thermochemical conversion of wet biomass with process conditions at the critical point of water. This
technology has similarities to other thermochemical conversion processes such as liquefaction, pyrolysis and gasification. But
it cannot be classified exactly as one of these technologies. This process is a continuous process that takes place at supercritical point
of waterby using both heterogeneous and homogeneous catalysts. Seven different waste biomass samples, such as saw dust, black
liqour, paper mill sludge, bark, cow manure, sewage and bio gasification sludge were subjected to CatLiq process. Biocrudes, gases
and aqueous samples obtained from these processes were subjected to characterization tests. Biocrudes obtained from different
waste biomass by CatLiq process were dark brown, free-flowing liquids and had distinctive odor. The densities of biocrude oils
were ~1.10 g/m3, higher than the density of petroleum crude oils. Crude bio-oils was a complex mixture of several hundreds of
organic compounds, mainly including acids, alcohols, aldehydes, esters, ketones, phenols, and lignin-derived oligomers. Some of
these compounds are directly related to the undesirable properties of bio-oil. Raw bio-oils obtained from liquefaction of different
kinds of waste biomass had very high water content, high viscosity and density and high oxygen content. The heating values of
raw bio-oils were between 32.0-37.06 MJ/kg, lower than crude oil. Biocrude obtained from catalytic liquefaction of sewage sludge
had highest heat of combustion (37.06 MJ/kg). It is obvious that waste biomass can be utilized to produce crude bio-oil and
CatLiq process is a promising alternative technological pathway for the production of crude bio-oil. Crude bio-oils obtained from
CatLiq process can be used as a combustion fuel in boiler/burner/furnace systems for heat generation, as a transportation fuel
after upgrading, for the production of chemicals and resins (e.g., agri-chemicals, fertilizers, acids and emission control agents),
also as a feedstock in making adhesives, e.g., asphalt bio-binders. Depending on feedstock, some crude bio-oils can be mixed
with crude petroleum oil up to 3% and can be refined together using petroleum refinery systems. Altaca Energy has been running
a pilot scale plant since 2011 on its premises in Turkey. Pre-commercial demonstration scale plant was constructed in Gönen,
Balikesir/Turkey and startup studies of this facility was planned to begin in the mid of 2015.
Parvana Aksoy is a Senior Researcher at the Energy Institute. She received her BS and MS from Department of Chemistry of Çukurova University/Turkey. She completed
her PhD in the Department of Chemistry at Çukurova University in 2004. After receiving her PhD degree, she visited Penn State University where she conducted Postdoctoral
research on the development of thermally stable jet fuels for 6 years. She did an extensive research on production of jet fuel from coal. She was also a Principal
Investigator of industrial projects to make coal/petroleum based activated carbons and cokes. She also worked as a quality control manager at the private fuel testing
laboratory AMSPEC LLC. She joined TUBÃ?°TAK four years ago. She is still working at the Energy Institute as a Senior Researcher under the “Gasification and Combustion”
group. Her research mainly based on production and upgrading of bio-oils, production of transportation fuels, gasification of coals and biomass.