GLYCEROLYSIS USING KF/CAO-MGO CATALYST: OPTIMISATION AND REACTION KINETICS

Authors

  • Luqman Buchori Department of Chemical Engineering, Faculty of Engineering, Diponegoro University, Jl. Prof. Soedarto, SH Tembalang, Semarang, 50275, Indonesia http://orcid.org/0000-0001-5138-8031
  • Mohammad Djaeni Department of Chemical Engineering, Faculty of Engineering, Diponegoro University, Jl. Prof. Soedarto, SH Tembalang, Semarang, 50275, Indonesia
  • R. Ratnawati Department of Chemical Engineering, Faculty of Engineering, Diponegoro University, Jl. Prof. Soedarto, SH Tembalang, Semarang, 50275, Indonesia
  • Diah Susetyo Retnowati Department of Chemical Engineering, Faculty of Engineering, Diponegoro University, Jl. Prof. Soedarto, SH Tembalang, Semarang, 50275, Indonesia
  • H. Hadiyanto Department of Chemical Engineering, Faculty of Engineering, Diponegoro University, Jl. Prof. Soedarto, SH Tembalang, Semarang, 50275, Indonesia
  • Didi Dwi Anggoro Department of Chemical Engineering, Faculty of Engineering, Diponegoro University, Jl. Prof. Soedarto, SH Tembalang, Semarang, 50275, Indonesia

DOI:

https://doi.org/10.11113/jt.v82.14585

Keywords:

Glycerolysis, monoglyceride, kinetics, KF/CaO-MgO catalyst, RSM optimisation

Abstract

Monoglycerides can be produced through glycerolysis using a heterogeneous catalyst. The purpose of this study is to analyse the optimum conditions for the production of monoglycerides from glycerol and cooking oil using KF/CaO-MgO base catalysts and to investigate the kinetics of the monoglyceride glycerolysis reaction. The response surface method (RSM) was used to determine the favourable conditions by varying the catalyst amount (X1) between 0.1, 0.2 and 0.3% (w/w); the reaction temperature (X2) between 210, 220 and 230°C and reaction time (X3) between 2, 3 and 4 hours. Gas chromatography-mass spectrometry (GC-MS) was used to determine the monoglycerides, while catalysts were characterised by X-ray diffraction (XRD) and the Brunauer-Emmett-Teller method (BET). The results showed that, among the three factors examined, temperature shows the most control over this glycerolysis reaction. The most favourable conditions are X1 = 0.19% (w/w), X2 = 208.37°C and X3 = 3.20 hours, which provide a monoglyceride yield of 41.58%. The constants for the reaction kinetics of the monoglyceride formation, k1 and k2 are 1.04189 and 0.88965 hour-1, respectively.

Author Biographies

  • Luqman Buchori, Department of Chemical Engineering, Faculty of Engineering, Diponegoro University, Jl. Prof. Soedarto, SH Tembalang, Semarang, 50275, Indonesia
    Department of Chemical Engineering, Faculty of Engineering, Diponegoro University, Semarang, Indonesia
  • Mohammad Djaeni, Department of Chemical Engineering, Faculty of Engineering, Diponegoro University, Jl. Prof. Soedarto, SH Tembalang, Semarang, 50275, Indonesia
    Department of Chemical Engineering, Faculty of Engineering, Diponegoro University, Semarang, Indonesia
  • R. Ratnawati, Department of Chemical Engineering, Faculty of Engineering, Diponegoro University, Jl. Prof. Soedarto, SH Tembalang, Semarang, 50275, Indonesia
    Department of Chemical Engineering, Faculty of Engineering, Diponegoro University, Semarang, Indonesia
  • Diah Susetyo Retnowati, Department of Chemical Engineering, Faculty of Engineering, Diponegoro University, Jl. Prof. Soedarto, SH Tembalang, Semarang, 50275, Indonesia
    Department of Chemical Engineering, Faculty of Engineering, Diponegoro University, Semarang, Indonesia
  • H. Hadiyanto, Department of Chemical Engineering, Faculty of Engineering, Diponegoro University, Jl. Prof. Soedarto, SH Tembalang, Semarang, 50275, Indonesia
    Department of Chemical Engineering, Faculty of Engineering, Diponegoro University, Semarang, Indonesia
  • Didi Dwi Anggoro, Department of Chemical Engineering, Faculty of Engineering, Diponegoro University, Jl. Prof. Soedarto, SH Tembalang, Semarang, 50275, Indonesia
    Department of Chemical Engineering, Faculty of Engineering, Diponegoro University, Semarang, Indonesia

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Published

2020-08-10

Issue

Vol. 82 No. 5: September 2020

Section

Science and Engineering

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How to Cite

GLYCEROLYSIS USING KF/CAO-MGO CATALYST: OPTIMISATION AND REACTION KINETICS. (2020). Jurnal Teknologi (Sciences & Engineering), 82(5). https://doi.org/10.11113/jt.v82.14585