Optimization and kinetic studies on biodiesel production from microalgae (Euglena sanguinea) using calcium methoxide as catalyst |
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| Authors: | Arun Prasad Arunachalam Sivagurulingam Periyasamy Sivanandi Sakthi Saravanan Arumugamurthi Anirbid Sircar |
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| Affiliation: | 1. Departtment of Petrochemical Engineering, RVS College of Engineering and Technology, Coimbatore, India;2. Department of Mechanical Engineering, Government college of Technology, Coimbatore, India;3. School of Petroleum Technology, Pandit Deendayal Petroleum University, Gandhinagar, India |
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| Abstract: | The present work investigates the production of biodiesel from Euglena sanguinea microalgal bio-oil using calcium methoxide as a heterogeneous catalyst. The catalyst was synthesized and characterized by Fourier Transform Infra-red (FTIR) spectroscopy, Scanning Electron Microscopy (SEM), X-ray Diffraction (XRD), Brunauer-Emmett-Teller (BET), basicity, and basic site strength analysis. Initially, bio-oil was extracted from mass-cultivated biomass obtained from Euglena sanguinea algae. It was further pretreated and transesterified using calcium methoxide catalyst at various experimental conditions by which an optimum yield of 94.83% was achieved. The catalyst yielded above 90% up to 5 cycles of recovery and recycling. The kinetic studies were investigated at various reaction temperatures to find the rate of reaction. The activation energy and pre-exponential factor for the transesterification reaction were found to be 99.33 kJ mol?1 and 1.07 × 1014 min?1 respectively. The properties of the produced biodiesel were within the limits of ASTM D6751 standard. |
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| Keywords: | Euglena sanguinea biodiesel transesterification calcium methoxide kinetics |
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