Process parameter estimation of supercritical carbon dioxide extraction of lipids fromspent coffee grounds

Lipids are a promising raw material for potential cheap and high-quality biodiesel production. The process parameters of lipid extraction from spent coffee grounds using supercritical carbon dioxide were estimated in this study. Two partial differential equations describing the solute transportation...

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Bibliographic Details
Main Authors: Muharam, Yuswan, Ramadhany, Muhammad Audry
Format: Conference Proceeding
Language:English
Subjects:
Biodiesel fuels
Carbon dioxide
Coffee
Interstices
Lipids
Mathematical analysis
Optimization
Ordinary differential equations
Parameter estimation
Partial differential equations
Process parameters
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Summary:Lipids are a promising raw material for potential cheap and high-quality biodiesel production. The process parameters of lipid extraction from spent coffee grounds using supercritical carbon dioxide were estimated in this study. Two partial differential equations describing the solute transportation in the bed interstices and solid pores as well as an ordinary differential equation explaining the solute rate in the solid matrix were used to estimate the accumulation yield. The calculated yieldswerefittedtothe experimental ones to obtain the values of the process parameters through optimization. An increase in pressure at a certain temperature causes the desorption coefficient to rise. The calculated value of the diffusion coefficientof lipid in supercritical CO2 is 1 × 10−10 m2/s to 1.3 × 10−10 m2/s.
ISSN:0094-243X
1551-7616
DOI:10.1063/5.0063912