Optimization and kinetic study of biodiesel production from nyamplung oil with microwave-assisted extraction (MAE) technique

Hakun Wirawasista Aparamarta ¹, Setiyo Gunawan ¹, Surya Iryana Ihsanpuro ¹

⁰Department of Chemical Engineering, Faculty of Engineering, Sepuluh Nopember Institute of Technology, Surabaya 60111, Indonesia.

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August 31, 2022

View abstract on PubMed

Summary

Nyamplung oil offers a sustainable biodiesel source without impacting food security. Microwave-Assisted Extraction (MAE) optimizes production, yielding high recovery rates and requiring less energy than conventional methods.

Area Of Science

Renewable Energy
Chemical Engineering
Biomass Conversion

Background

Nyamplung oil (Calophyllum inophyllum) is a non-edible, high-oil-content resource with significant potential for biodiesel production.
Utilizing non-edible sources like nyamplung oil ensures no conflict with food security.
Optimizing biodiesel production from nyamplung oil is crucial for efficient renewable energy development.

Purpose Of The Study

To determine the optimal conditions for biodiesel production from nyamplung oil using response surface methodology (RSM).
To investigate the kinetics of the free fatty acid (FFA) esterification reaction within the Microwave-Assisted Extraction (MAE) method.
To compare the energy efficiency and time requirements of the MAE method against conventional biodiesel production techniques.

Main Methods

Response Surface Methodology (RSM) with a Central Composite Design (CCD) was employed to identify optimal operating parameters.
Kinetic experiments were conducted at various microwave power levels to analyze the esterification reaction.
Activation energy and kinetic rate constants were determined for the MAE process.

Main Results

RSM optimization achieved high triglyceride (TG) recovery (95.49%) and FFA recovery (31.42%) under specific microwave power and time conditions.
Biodiesel conversion followed first, second, and third-order reaction kinetics, with the highest R² values observed for second and third-order reactions.
The MAE method demonstrated significantly lower activation energy (604.43 J/mol) compared to conventional methods (4831.26 J/mol), indicating greater energy efficiency.

Conclusions

Biodiesel production from nyamplung oil using the MAE method is highly efficient, requiring less energy and time than conventional approaches.
The optimized MAE process offers a viable and sustainable alternative for producing biodiesel from non-edible nyamplung oil.
Further kinetic analysis and optimization can enhance the overall efficiency and scalability of nyamplung oil-based biodiesel production.

Keywords:

Batchwise solvent extraction method Biodiesel Microwave assisted extraction method Nyamplung oil Response surface methodology