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Jeong Ik Lee and David Sanchez
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Alexander Johannes Hacks, Sebastian Schuster and Dieter Brillert
This paper aims to give an understanding of an effect which stabilizes the inlet conditions of compressors for supercritical CO2 (sCO2) operating close to the critical point. The effect was observed during testing of the turbomachine within the sCO2-HeRo...
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Anis Muslihah Zambree
Pág. 50
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 extr...
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Hugo Valdés, Kevin Unda and Aldo Saavedra
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Kornélia Koszegi, Gyula Vatai, Erika Békássy-Molnár
Pág. 168 - 173
The leaves of stinging nettle (Urtica dioica L.) are used for medical purposes since centuries while the nettle roots are applied only in the last decades. According to the latest researches the root of nettle contains many important ingredients, for exa...
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Alex Matilha, Lucio Cardozo Filho, Fred Wolff (Author)
Pág. 1433 - 1437
The aim of this work is a supercritical fluid extraction process simulation with Aspen-Plus. Equipments used to simulate the process were selected according to the literature and involve two extraction vessels, two tanks, six heat exchangers, two separat...
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Ioulia Georgiopoulou, Soultana Tzima, Vasiliki Louli and Kostis Magoulas
The production of bioactive products from microalgae biomass with efficient and environmentally friendly technologies is a field of great research interest. The present work focuses on the recovery of high-added value bioactive components from Chlorella ...
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David Villanueva-Bermejo, Erika Vázquez, Marisol Villalva, Susana Santoyo, Tiziana Fornari, Guillermo Reglero and Mónica Rodriguez García-Risco
Heather (Calluna vulgaris L.) and marigold (Calendula officinalis L.) are two rich sources of bioactive pentacyclic triterpenes. The supercritical carbon dioxide (SCCO2) extraction of these two plants was explored at a pressure range of 25?50 MPa, 50 °C,...
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Szabina Plánder, Blanka Simon, Szabolcs Béni, Ágnes Alberti, Ágnes Kéry, Edit Székely
Pág. 340 - 347
Plane tree is planted as ornamental tree in urban areas. This tree naturally sheds its bark during the spring; however, the shed bark is commonly regarded as a waste material without any significant application.On the other hand, the bark of plane tree m...
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Yi Hu, Yiwei Liu, Can Cai, Yong Kang, Xiaochuan Wang, Man Huang and Feng Chen
Due to the advantages of good fracture performance and the application of carbon capture and storage (CCS), supercritical carbon dioxide (SC-CO2) is considered a promising alternative for hydraulic fracturing. However, the fracture initiation mechanism a...
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Hossein Rostamian, Mohammad Nader Lotfollahi
Pág. 174 - 185
In this work, a modified Redlich?Kwong (ßRK) equation of state has been proposed to calculate the solubilities of twenty solids including Ascorbic acid, Fluoranthene, Propyl gallate, Acenaphthene, Asprin, Climbazole, Cinnamic acid, Triclocarban, 4-methox...
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Vitor Augusto dos Santos Garcia, Camila da Silva, Lúcio Cardozo Filho
Pág. 499 - 505
The work aimed to investigate the extraction of Mucuna deeringiana seed oil using supercritical carbon dioxide as solvent, and the chemical profile of fatty acid components. The experiments were performed in a laboratory scale unit in a temperature range...
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Milad Asgarpour Khansary, Ahmad Hallaji Sani, Hossein Shahbeig, Amin Arif, Hadi Dalirsefat, Mohammad Ali Salehi
Pág. 179 - 194
Based on Pitzer correlations for the compressibility factor and virial equation of state, a new equation of state has been developed in this study, which is a function of total number of atoms present in the solute molecule, normal boiling point temperat...
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Soroush Ahmadi and Farhang Sefidvash
Pressure drops of water and critical steam flowing in the fixed bed of mono-sized spheres are studied using SolidWorks 2017 Flow Simulation CFD code. The effects of the type of bed formation, flow velocity, density, and pebble size are evaluated. A new e...
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Charles R. Ortloff
High-speed fluid flows over roughened surfaces occur in many engineering applications; one important application involves high velocity water flows in pipelines with roughened interior walls where the wall roughness affects head loss estimates necessary ...
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Markus Armbruster, Mathias Mönckedieck, Regina Scherließ, Rolf Daniels and Martin A. Wahl
Triterpene compounds like betulin, betulinic acid, erythrodiol, oleanolic acid and lupeol are known for many pharmacological effects. All these substances are found in the outer bark of birch. Apart from its pharmacological effects, birch bark extract ca...
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Andrea Vass, Barnabás Attila Rácz, László Abrankó
Pág. 69 - 73
Monitoring and controlling wide variety of pesticide residues is a crucial challenge of food safety. In our study ultra-performance convergent chromatography (UPC2), as the new generation of supercritical fluid chromatography coupled with ESI-MS/MS syste...
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Wagner Luiz Priamo, Irede Dalmolin, Daiane Lúcia Boschetto, Natália Mezzomo, Sandra Regina Salvador Ferreira, Jose Vladimir de Oliveira
Pág. 695 - 709
Several micronization processes based on supercritical fluids have been developed. These processes can be classified according to the role of the supercritical fluid in the process: solvent, solute or co-solvent, and anti-solvent. Application of supercri...
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Mark P. Heitz, Kristina L. Fuller and Kaitlin A. Ordiway
We present steady-state and time-resolved fluorescence spectroscopic data derived from coumarin 153 (C153) in a binary solution comprised of trihexyltetradecylphosphonium chloride ([P6,6,6,14]+Cl-) and supercritical CO2 (scCO2). Steady-state fluorescence...
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Christian Deusner, Nikolaus Bigalke, Elke Kossel and Matthias Haeckel
The recovery of natural gas from CH4-hydrate deposits in sub-marine and sub-permafrost environments through injection of CO2 is considered a suitable strategy towards emission-neutral energy production. This study shows that the inj...
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