4.3 Article

OPTIMIZED BIODIESEL PRODUCTION FROM C. INOPHYLLUM BIO-OIL USING KRIGING AND ANN PREDICTIVE MODELS

Journal

THERMAL SCIENCE
Volume 26, Issue 5, Pages 4217-4232

Publisher

VINCA INST NUCLEAR SCI
DOI: 10.2298/TSCI211127032V

Keywords

transesterification; reaction time; Molar ratio; biodiesel yield; optimization

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This study aimed to optimize the two-stage transesterification efficiency of C. inophyllum biodiesel production using artificial neural network and Kriging predictive models. The models were used to predict the biodiesel yield and the optimized parameters were verified experimentally.
This work aimed at optimizing the two-stage transesterification efficiency of the production of C. inophyllum biodiesel using artificial neural network and Kriging predictive models. Response surface methodology was used to develop the central rotatable composite design of 27 trial experimental runs with variations in the input process parameters like methanol to oil molar ratio, potassium hydroxide catalyst loading, and reaction time. A multi-layered non-linear regressive artificial neural network model with feed-forward propagation and a numerical surrogate Kriging model was used to predict the C. inophyllum biodiesel yield. The efficacy of the developed model was verified using analysis of variance by comparing its coefficient of determination and the mean relative percentage deviation values. The optimized C. inophyllum biodiesel as 98.1% is derived with 0.94 v/v of methanol to oil molar ratio, 0.98 wt.% of potassium hydroxide catalyst loading, and 80 minutes reaction time with 70 degrees C constant reaction temperature as predicted by Kriging model. The optimized parameters were also verified experimentally.

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