Conceptual Study Of Enzymatic Synthesis Of Propyl Caffeate In Packed Bed Reactor At Steady-State And Isothermal Conditions
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Date
2021-06-01
Authors
Rajendran, Ajayan
Journal Title
Journal ISSN
Volume Title
Publisher
Universiti Sains Malaysia
Abstract
The enzymatic propyl caffeate synthesis in packed bed reactor (PBR) at steady-state
and isothermal conditions is presented in this thesis. The simulation carried out to study the
effects of temperature, substrate/alcohol molar ratio, and substrate concentration on
conversion. The mathematical model is developed in Polymath® software to simulate the
results to compare with published experimental data. The highest conversion achieved at 60°C
with 99.5% in the experimental data while the proposed simulated data gives 91.1% at 60°C
with the error percentage of 8.44% which is considered acceptable error percentage since less
than 10%. Based on this simulation results, both conversion and rate of reaction is decreases at
reaction temperature above 80°C which shows the enzyme are start to deactivate at this
temperature. This study shows the highest conversion is achieved in both simulation and
experimental results at reaction temperature of 70°C and 60°C respectively. Moreover, both
simulated and experimental results indicates that the perfect molar ratio of methyl caffeate to
1-propanol is with range of 1:10 and 1:40 which give higher conversion and producing high
yield. In addition, the studies found that low concentration of methyl caffeate of 0.005 mol/L
provide the highest conversion and enhances the enzymatic reaction.