Department of Chemical Sciences;
Faculty of Natural Sciences;
Redeemer’s University;
Ede;
Osun State;
Nigeria;
Department of Chemistry;
Faculty of Natural Science;
University of Ibadan;
Ibadan;
Oyo State;
Nigeria;
School of Chemical and Energy Engineering;
Universiti Teknologi Malaysia;
81310 Skudai;
Johor;
Malaysia;
Adsorption; Co-precipitation; Deteriorated vegetable oil; Free fatty acid(FFA); Langmuir;