Techno-economic and safety assessment of supercritical CO2 extraction of essential oils and extracts

Khalati, Elham; Oinas, Pekka; Favén, Leena

doi:10.1016/j.jcou.2023.102547

Cited by 8 publications

(2 citation statements)

References 22 publications

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“…The use of supercritical carbon dioxide (scCO 2 ) as an alternative to traditional aqueous and organic solvents is a route to solve the problem [13]. Because scCO 2 with a critical point of 73.9 bar and 31 • C has gas-liquid dual properties, it has good solubility and diffusion properties for polymer resins and is non-toxic and harmless [14][15][16]. Furthermore, the low cost, low viscosity, stability, and low toxicity of scCO 2 make it one of the best candidates to replace organic solvents [17].…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of Flow Characteristics for Supercritical CO2-Sprayed Polyurethane Resin

Li,

Zhang,

Xiang

et al. 2024

Polymers

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Conventional paint spraying processes often use small molecule organic solvents and emit a large amount of volatile organic compounds (VOCs) that are highly toxic, flammable, and explosive. Alternatively, the spraying technology using supercritical CO2 (scCO2) as a solvent has attracted attention because of its ability to reduce VOC emissions, but the flow characteristics of coatings have not been thoroughly studied. Therefore, we numerically simulate the spraying process based on the actual process of scCO2 spraying polyurethane coatings by computational fluid dynamics (CFD). The effects of inlet pressure and volume fraction of scCO2 on the fluid motion parameters inside the nozzle as well as the atomization effect of droplets outside the nozzle are investigated. The simulated results show that a fluid with a large volume fraction of scCO2 will obtain a smaller density, resulting in a larger velocity and a larger distance for the spray to effectively spray. Higher coating content and bigger inlet pressures will result in higher discrete phase model (DPM) concentrations, and thus a bigger inlet pressure should be used to make the droplets more uniform across the 30° spray range. This study can provide theoretical guidance for the process of scCO2-sprayed polyurethane resin.

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Section: Introductionmentioning

confidence: 99%

Numerical Simulation of Flow Characteristics for Supercritical CO2-Sprayed Polyurethane Resin

Li,

Zhang,

Xiang

et al. 2024

Polymers

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“…26 However, the research on SC-CO 2 as a drying technique for food components is still scarce. Even though SC-CO 2 technology is considered a green technology for applications like extraction, 29,30 there is limited data on the techno-economic analysis of SC-CO 2 dying. SC-CO 2 drying has been used for generating aerogels with ultra-low density, high surface area, and porosity.…”

Section: Introductionmentioning

confidence: 99%

Effect of a novel drying method based on supercritical carbon dioxide on the physicochemical properties of sorghum proteins

Sadaf,

Tuhanioglu,

Hettiarachchy

et al. 2024

RSC Adv.

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Ecofriendly extraction approach of Moringa peregrina biomass and their biological activities in vitro

Qanash,

El-Fadl,

Binsaleh

et al. 2024

Biomass Conv. Bioref.

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Techno-economic and safety assessment of supercritical CO2 extraction of essential oils and extracts

Cited by 8 publications

References 22 publications

Numerical Simulation of Flow Characteristics for Supercritical CO2-Sprayed Polyurethane Resin

Numerical Simulation of Flow Characteristics for Supercritical CO2-Sprayed Polyurethane Resin

Effect of a novel drying method based on supercritical carbon dioxide on the physicochemical properties of sorghum proteins

Ecofriendly extraction approach of Moringa peregrina biomass and their biological activities in vitro

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