Optimization of colour pigments removal from palm oil using activated ogbunike kaolinite

Authors : Ikechukwu Abuchi NNANWUBE, Vincent Nwoye OKAFOR, John Ifeanyi OBIBUENYI, Okechukwu Dominic ONUKWULI, Regina Obiageli AJEMBA

Pages : 253-262

View : 33 | Download : 5

Publication Date : 2020-03-27

Article Type : Research Paper

Abstract :Response surface methodology insert ignore into journalissuearticles values(RSM); and genetic algorithm insert ignore into journalissuearticles values(GA); were employed to determine the optimum conditions for the removal of pigments from palm oil using Ogbunike clay activated with hydrochloric acid. The physicochemical characterization of the clay showed that it exists mainly as kaolinite. The process variables and ranges used in the experimental design were 75 – 150 oC bleaching temperature, 1.50 – 3.00 hours bleaching time, 1.25 -5.50 g clay dosage and 0.05 – 0.40 mm particle size. The analysis of variance insert ignore into journalissuearticles values(ANOVA); showed that a second order polynomial regression equation was adequate for fitting the experimental data. The model statistical tests carried out showed a good correlation between the experimental and predicted values insert ignore into journalissuearticles values(R2 = 0.9964);. About 73.35 % pigments were removed using RSM while 71.34% pigments were removed using genetic algorithm at the optimum conditions. Hence, Ogbunike kaolinite proved to be a good adsorbent for pigments removal from palm oil.
Keywords : Optimization, ANOVA, bleaching, genetic algorithm, kaolinite

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