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Volume 9
Journal of Chemical Engineering & Process Technology
Catalysis 2018
September 05-06, 2018
September 05-06, 2018 Tokyo, Japan
5
th
World Congress on
Catalysis and Chemical Engineering
Stable zirconia based catalyst for production of biofuels from waste cooking oil with high free fatty
acid contents
Rabya Aslam
University of the Punjab, Pakistan
W
aste cooking oil is valuable and cheap feedstock for the production of bio-fuels as compared to virgin edible oil. It can not
only help to reduce environmental impacts of waste cooking oil but also can contribute to the future energy demand. Both
alkaline and acidic catalyst may be used for trans-esterification of waste cooking oil to biofuel. In most cases, sodium hydroxide
and potassium hydroxide are used as alkaline catalyst and mineral acids are used as acidic catalysts in homogeneous reaction,
because of their higher reaction rates, availability and low cost. However, recovery of catalyst is difficult in this process. Moreover,
in the case of waste cooking oil which contains relatively high percentage of free fatty acid, alkaline catalysts are prone to the
saponification reaction which reduces the biodiesel conversions. In order to cope up with low biofuel conversion, slow reaction
rates, activity of solid catalysts are evaluated in this work. The activity of in house synthesized zirconia is studied by varying
reaction conditions such as time, temperature, alcohol to oil ratio. Effect of modification of zirconia to increase its alkaline nature
is also studied by impregnating Sr, Ca, and Mg metal on zirconia. It was found the alkaline modified zirconia results in better yield
as compared to simple zirconia. Additionally, the synthesized biodiesel was fully characterized with respect to density, kinematic
density, iodine values, acid values, carbon residue, pour points, flash points, etc. and was compared with literature.
rabya.icet@pu.edu.pkJ Chem Eng Process Technol 2018, Volume 9
DOI: 10.4172/2157-7048-C2-015