Results 91 to 100 of about 2,389,362 (289)

Rock mechanical properties under reconstructed deep in situ thermo–hydro–mechanical conditions: Implications for CO₂‐related injection scenarios

Deep Underground Science and Engineering, EarlyView.
The graphical abstract illustrates a reconstructed in situ thermo‐hydro‐mechanical (THM) framework in which porosity serves as the central variable linking stress, pore pressure, and temperature to evolving mechanical properties of rocks. Under burial conditions, in situ stress, pore pressure, and temperature jointly govern volumetric strain and ...
Mingyuan Lu, Jun Wang, Zixiong Qi, Ruixuan Chen, Hongtao Wang, Hongwei Zhou   +5 more
wiley   +1 more source

Optimizing the process of supercritical extraction of lemon balm (Melissa Officinalis L.) [PDF]

, 2010
This work investigates the process of extraction of lemon balm (Melissa officinalis L.) by treatment with carbon dioxide at supercritical conditions. The process kinetics is studied at different operational conditions, and the influence of some important
Camy, Séverine, Condoret, Jean-Stéphane, Angelov, George, Penchev, Petko Ivanov   +3 more
core  

Chamomile extraction with supercritical carbon dioxide: mathematical modeling and optimization [PDF]

, 2011
Supercritical fluid extraction of chamomile using carbon dioxide was investigated in the current study. A model that accounts for both particle and fluid phase was presented for the supercritical extraction.
Rahimi, E., Zahedi, Gholamreza, G. Zahedi, M.A.A. Meireles, Rahimi, E, E. Rahimi, J.M. Prado, Prado, JM, Prado, Juliana M., Meireles, Maria Angela Almeida, Meireles, MAA, Zahedi, G   +11 more
core   +1 more source

Combination of CO 2 ${\text{CO}}_{2}$ storage and geothermal energy production in porous and fractured superhot geothermal systems

Deep Underground Science and Engineering, EarlyView.
The graphical abstract depicts the workflow for porous‐ and fractured‐media simulations, where stochastically generated discrete natural fractures are required for the fracture‐media simulation. Abstract CO 2 ${\text{CO}}_{2}$ leakage is one of the main risks and barriers to geologic carbon storage. However, under the high‐temperature and high‐pressure
Christoph Scherounigg, Rotman Criollo, Victor Vilarrasa, Keita Yoshioka   +3 more
wiley   +1 more source

Coupling of Supercritical Fluid Extraction with Chromatography

Analytical Sciences, 1991
Coupling methods between supercritical fluid extraction (SFE) and various chromatographic techniques have been reviewed. Developments using supercritical fluids in chromatography have been tremendous and a confirmation of the usefulness of this technique (called supercritical fluid chromatography (SFC)) has been evidenced by many scientists.
JINNO, Kiyokatsu, SAITO, Muneo
openaire   +2 more sources

Modeling and monitoring injectivity evolution during cold CO2 injection with field evidence from aquistore carbon capture and storage operations

Deep Underground Science and Engineering, EarlyView.
This work integrates 5 years of field data from the Aquistore CCS project with a non‐isothermal THM modeling framework to explain how cold CO2 injection alters injectivity over time. The study shows that sustained cooling near the wellbore reduces effective stresses, promotes tensile micro‑cracking, and leads to semi‑reversible permeability enhancement
Alireza Rangriz Shokri, Stephen Talman, Erik Nickel, Rick Chalaturnyk   +3 more
wiley   +1 more source

Birch Bark Dry Extract by Supercritical Fluid Technology: Extract Characterisation and Use for Stabilisation of Semisolid Systems

Applied Sciences, 2017
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.
Markus Armbruster, Mathias Mönckedieck, Regina Scherließ, Rolf Daniels, Martin A. Wahl   +4 more
doaj   +1 more source

Supercritical Fluid Extraction of t-Resveratrol and Other Phenolics from a Spiked Solid [PDF]

, 1998
Supercritical fluid extraction of spiked phenolics including gallic acid, (+)-catechin, (-)-epicatechin, caffeic acid, p-coumaric acid, myricetin, t-resveratrol, quercetin and salicylic acid from an inert support using pure CO 2 and methanol-carbon ...
Ríos, A. [0000-0003-1728-3097], Tena, M.T. [0000-0002-8841-2653], Valcárcel, M. [0000-0002-3516-2072]   +2 more
core  

Recent Advances of Perovskite Oxides for Air Pollution Control Chemistry: The Closed Loop From Design to Application

EcoEnergy, EarlyView.
This review summarizes a descriptor‐guided framework for linking theoretical calculations, in situ/operando characterization, synthesis regulation, and application screening in functional materials. Emphasis is placed on dynamic structure–property relationships that enable low‐cost material design with enhanced activity, stability, and environmental ...
Yanyu Jin, Zezheng Tang, Hengfan Wu, Xing Yuan, Zongxiang Yang, Weijia An, Wenquan Cui, Xianguang Meng, Ying Xu, Junhua Li   +9 more
wiley   +1 more source

Supercritical Fluid Extraction of Vegetable Materials

Chemistry & Chemical Technology, 2016
The paper presents the base and conditions for the extraction of organic materials with solvents in the supercritical state with particular attention to use of CO2 as the extraction agent. The advantages and disadvantages of this process are described. The examples of extraction of organic materials using supercritical of CO2 are presented.
Kulazynski, Marek, Stolarski, Marek, Faltynowicz, Hanna, Narowska, Beata, Swiatek, Lukasz, Lukaszewicz, Marcin   +5 more
openaire   +2 more sources