Abstract
Patchouli oil is a commercially important essential oil in the flavor and fragrance industry. In this study, a technoeconomic feasibility assessment was conducted to commission a supercritical fluid extraction plant for the extraction of patchouli oil in Singapore. The study revealed that the manufacturing cost for patchouli oil is 53.87 USD/kg for a plant processing capacity of 400,000 kg of raw material/year with the cost of utilities being a major contributing factor to the manufacturing cost. In addition, financial indicators such as net present value, discount cash flow rate of return, return on investment and payback period have been applied to evaluate the profitability of the supercritical fluid extraction plant. The total investment cost for the plant is around 4.77 million USD. Calculation of the discounted cash flow rate of return shows that a maximum interest rate of 26.3% can be loaned from investors and the project would still breakeven. At an interest rate of 5.25%, the return on investment for the project is calculated to be 27.4% and the payback time is estimated to be 5.4 years with a total profit of 5.27 million USD after 10 years.
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