Biodiesel production from waste frying oil via heterogeneous transesterification: Optimization study

Yusuff,, A.S and Adeniyi,, O.D and Azeez,, O.S and Olutoye,, M.A and Akpan,, U.G Biodiesel production from waste frying oil via heterogeneous transesterification: Optimization study. 2ndInternational Engineering Conference (IEC2017. pp. 1-13.

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Abstract

This study deals with development of a new composite heterogeneous catalyst, anthill-eggshellpromoted Ni-Co mixed oxides (NiCoAE). Thecatalyst was synthesized via co-precipitationand also characterizedto evaluate its properties.The as-synthesized NiCoAEcatalyst was thereafter tested for transesterification reaction.The effects of variables affecting the transesterification process,reaction temperature (50-70 oC), reaction time (2-4 h), catalyst loading (3-7 wt%) and methanol to oil ratio (6:1-12:1) were investigated using central composite design (CCD). The biodiesel yield of 89.23% was obtained at the following optimum reaction conditions; 70 oC of reaction temperature, 2 h of reaction time, 3 wt% of catalyst loading and methanol to waste frying oil ratio of 12:1.This indicates thatNiCoAEas heterogeneous catalyst has potential to converthigh FFA feedstockinto biodiesel via singlestep transterification process

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