Supercritical CO2 extraction of basil oil: Characterization of products and process modeling

Supercritical CO2extraction of porogen phase: An alternative route to nanoporous dielectrics

“…9 In a previous paper, we reported the ability of SCCO 2 to dissolve low molecular weight and loosely bonded species in films prepared by plasma-enhanced CVD. 10 Supercritical CO 2 has been used effectively for the extraction and isolation of organic and inorganic compounds, including removal of hazardous organic waste from contaminated soil, 11,12 fractionation of natural oils, [13][14][15][16] and extraction of biomolecules, 17 metal ions, [18][19][20][21] and polymerization catalysts. 22 We believe that extraction of porogens in a hybrid inorganic-organic film for semiconductor applications is unique and applied for the first time by our group.…”

MODELAGEM MATEMÁTICA DA EXTRAÇÃO DE AGROTÓXICOS PRESENTES NA BANANA VITÓRIA (Musa spp) USANDO CO2 SUPERCRÍTICO

“…Diante das 36 curvas modeladas, escolheu-se apresentar os resultados a 200 bar -60 °C, 244 bar -46 °C e 244 bar 74 °C para representar o modelo de Esquível et al (1999) e Sovová (1994) e as condições de 350 bar -40 ºC, 350 bar -60 ºC e 350 bar -80 ºC para representar os modelos de Reverchon & Osseo (1994) e Zeković et al (2003). As curvas foram construídas obedecendo às unidades de tempo dos artigos originais de cada modelo, de modo a obter melhores resultados dos parâmetros.…”

“…A modelagem das curvas de extração foi realizada utilizando-se os modelos de Esquível et al (1999), Sovová (1994), Reverchon & Osseo (1994) e Zeković (2003.…”

“…Os melhores rendimentos em extrato bruto foram obtidos nas condições operacionais de 200 bar e 60 °C e 350 bar e 80 °C, atingindo desvios de 5,81% para o modelo de Sovová (1994) e 6,32% para Zeković et al (2003). Além destes, os modelos de Esquível et al (1999) e Reverchon & Osseo (1994) também se adaptaram às curvas de extração de óleo bruto da banana vitória (musa spp), mostrando-se aptos na correlação do processo.…”

Mathematical modeling of supercritical extraction of sage oil

“…All particles were assumed to be spherical and the equations that apply to the cooling of a "hot ball" in a uniform medium were used to describe the concentration profile inside the particles as a function of time (Bartle et al, 1990Reverchon et al, 1993aReverchon et al, 1994b). The model considered all particles at the same extraction conditions, i.e., the extractor volume was considered as a lumped parameter.…”