Preparation and Characterization of KOH Impregnated Calcined Fishbone Catalyst for Biodiesel Production from Waste Cooking
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Date
2019-06
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Addis Ababa University
Abstract
KOH/Calcined fishbone catalyst was prepared through wet impregnation process by impregnating
5, 10 & 15 wt% of KOH catalyst with calcined fishbone. The catalyst prepared by impregnating
10 wt% of potassium hydroxide in calcined fishbone as a support was found to show the best
catalytic activity among the prepared catalysts. The characterization of KOH/Calcined fishbone
catalyst, supported catalyst and raw fishbone was conducted by XRD and FTIR analysis. The
effects of various reaction variables on the yield of biodiesel were investigated. The highest yield
of biodiesel over KOH/Calcined fishbone catalyst was 97.46%. It was obtained at the optimum
condition of methanol to oil ratio of 10.56, catalyst dosage of 3.96 wt%, reaction time of 2.7 h and
the reaction temperature at 65
C. The physiochemical and fuel properties of biodiesel were studied
and it is within the biodiesel standard specification. The produced biodiesel under the optimal
reaction condition was characterized by using FTIR and GC-MS analysis. The selected catalyst
has been reused successfully for three catalytic cycles.
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Keywords
Solid base catalyst, fishbone, impregnation, potassium hydroxide, waste cooking oil, Transterification