Conversion of Oleum papaveris seminis oil into methyl esters via esterification process: Optimization and kinetic study


  • A. M. Syam Institute of Advanced Technology, Universiti Putra Malaysia - Department of Chemical Engineering, University of Malikussaleh
  • U. Rashid Institute of Advanced Technology, Universiti Putra Malaysia - Chemistry Department, College of Science, King Saud University
  • R. Yunus Institute of Advanced Technology, Universiti Putra Malaysia - Department of Chemical and Environmental Engineering, Faculty of Engineering, Universiti Putra Malaysia
  • H. A. Hamid Institute of Advanced Technology, Universiti Putra Malaysia
  • S. I. Al-Resayes Chemistry Department, College of Science, King Saud University
  • I. A. Nehdi Chemistry Department, College of Science, King Saud University
  • A. H. Al-Muhtaseb Petroleum and Chemical Engineering Department, Faculty of Engineering, Sultan Qaboos University



Amberlite 120, Esterification, Kinetics, Oleum Papaveris Seminis Oil, Response Surface Methodology


This paper presents an acid pre-treatment process and a kinetic study for the esterification reaction of Oleum papaveris seminis oil with methanol in the presence of amberlite 120 as a solid catalyst to convert the oil into methyl esters. Response surface methodology (RSM) was applied to optimize the reaction parameters, i.e. reaction time, percentage of the catalyst and volume ratio of methanol to oil. The results revealed that 0.87% w/w of catalyst concentration and 44.70% v/v of methanol to oil ratio provided final free fatty acid (FFA) contents of 0.60% w/w at 102.40 min of reaction time. It proved that the contribution of Amberlite 120 in the esterification of FFA was highly significant. The kinetics of the esterification in Oleum papaveris seminis oil with methanol in the presence of the amberlite 120 catalyst were also investigated to establish the reaction rate constant (k), reaction order, and activation energy. The study was performed under the optimized parameters at three reaction temperatures (50, 55, and 60 ºC). The value of k was in the range of 0.013 to 0.027 min-1. The first-order kinetics’ model was suitable for this irreversible FFA esterification with the activation energy of about 60.9 KJ·mol-1.


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How to Cite

Syam AM, Rashid U, Yunus R, Hamid HA, Al-Resayes SI, Nehdi IA, Al-Muhtaseb AH. Conversion of Oleum papaveris seminis oil into methyl esters via esterification process: Optimization and kinetic study. grasasaceites [Internet]. 2016Mar.31 [cited 2022Dec.5];67(1):e115. Available from: