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209  Articles
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The supercritical CO2 extraction of microbial quinones from activated sludge samples obtained from various activated sludge was investigated and compared to the conventional method using organic solvent extraction. The extraction was carried out in a supe... see more

The supercritical CO2 extraction of microbial quinones from activated sludge samples obtained from various activated sludge was investigated and compared to the conventional method using organic solvent extraction. The extraction was carried out in a supe... see more

Since the isolation procedures are easy, many of the earliest pure compounds isolated with biological activitywere alkaloids. The nitrogen molecules in plant cells generally make the compound alkaline which makealkaloids exist in a salt form in plants. Th... see more

Experimental data on investigation of water effect on efficiency of supercritical fluid extraction by carbon dioxide (SFE-CO2) of uranium complexes from nature minerals at carbon dioxide pressure to 20.0 MPa and temperature to 45oC are presented. It is sh... see more

A description of the installation for the supercritical fluid extraction of uranium complexes in the carbon dioxide medium, as well as instrumentation for the analysis of the test materials are presented. A method of selection of granites, which are used ... see more

The aim of this work was to study the impregnation of the photochromic dye Reversacol Graphit® in composite films of polycarbonate (PC) and silica gel, with the purpose of finding applications in photochromic lenses. Pure PC films were also impregnated in... see more

Plenty extraction technique has been study to perform the extraction process. Solvent extraction and hydrodistillation is the conventional and oldest method for the extraction. However, there have some limitation when using these techniques. Soxhlet extra... see more

The present work deals with the mathematical modelling and analytical solution of the problem of standing waves in rectangular curved channels under supercritical flow regime. To date, several numerical models and some analytical solutions have been propo... see more

In this study, supercritical carbon dioxide was applied for the extraction of Artemisia annua L. Moreover, the impact of different parameters of supercritical extraction on total yield was investigated and the obtained yields were compared to the ones obt... see more

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