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- W2004677228 abstract "The influence of extraction temperature and seed-to-solvent ratio in the ranges of 20–70 °C and 1:3–1:10 g/mL, respectively on the hempseed oil extraction by n-hexane was investigated in order to conduct both kinetic and thermodynamic analysis. For the kinetic modeling, it was assumed that washing and diffusion occurred simultaneously. A four-parameter phenomenological model fitted the experimental data with a mean relative percent deviation (MRPD) of ±2.5% (based on 125 data). The extraction conditions did not influence the fraction of washable hempseed oil (f = 0.821 ± 0.006), but affected the washing and diffusion rate constants. A modified Arrhenius equation was used to correlate the rate constants with extraction temperature and solvent-to-seed ratio. Since the washing rate constant was much higher than the diffusion rate constant, the kinetics of the hempseed oil extraction could be successfully described by a simpler three-parameter model based on the assumption of instantaneous washing followed by diffusion (MRPD = ±2.8%). The hempseed oil extraction was shown by a thermodynamical analysis to be feasible, spontaneous, endothermic and irreversible. Depending on the seed-to-solvent ratio, the hempseed oil yield increased by a factor of 1.012–1.027 for every 10 °C rise in temperature." @default.
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- W2004677228 date "2014-01-01" @default.
- W2004677228 modified "2023-09-24" @default.
- W2004677228 title "The kinetics and thermodynamics of hempseed oil extraction by n-hexane" @default.
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- W2004677228 doi "https://doi.org/10.1016/j.indcrop.2013.11.045" @default.
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