Results 31 to 40 of about 23,412 (269)

Green Extraction of Antimicrobial Bioactive Compound from Piper Betle Leaves: Probe type Ultrasound-assisted Extraction vs Supercritical Carbon Dioxide Extraction

open access: yesChemical Engineering Transactions, 2017
The utilisation of green method for medicinal plant extraction has become a trend and an acceptable method in many areas of research and development. In this study, bioactive compounds were extracted from dried Piper betle leaves using the probe type ...
L.W. Foo, E. Salleh, S.N. Hana
doaj   +1 more source

Operation characteristic of supercritical carbon dioxide-cooled reactor system under coordination control scheme

open access: yesInternational Journal of Advanced Robotic Systems, 2020
Nuclear power plant is completely independent of air and has high power density, which improves unmanned marine vehicle maneuvering performance, maximum speed, and concealment.
Xue Du, Junsheng Hu, Genglei Xia
doaj   +1 more source

Cellulosic materials as biopolymers and supercritical CO2as a green process: chemistry and applications [PDF]

open access: yes, 2012
In this review, we describe the use of supercritical CO2 (scCO2) in several cellulose applications. The focus is on different technologies that either exist or are expected to emerge in the near future.
Yaocihuatl Medina-Gonzalez   +5 more
core   +1 more source

Characterization of grape seed oil extracted by supercritical carbon dioxide

open access: yesGrasas y Aceites, 1995
In this work the quality of grape seed oil obtained by extraction with supercritical carbon dioxide was studied. At the optimun operating conditions (313 K and 25 MPa), the yield of supercritical extraction is similar to the conventional extraction by ...
A. Molero Gómez   +2 more
doaj   +1 more source

Experimental solubility measurement of cephalexin in supercritical carbon dioxide [PDF]

open access: yesChemical Industry and Chemical Engineering Quarterly, 2014
In recent years, using supercritical carbon dioxide for different chemical processes in particular particle micronization has been surprisingly increased.
Shojaee Safar Ali   +4 more
doaj   +1 more source

Experimental study on the evolution law of mechanical properties of long-flame coal under supercritical carbon dioxide immersion

open access: yesMeitan xuebao
Underground coal gasification coupled with carbon dioxide sequestration provides a new way for the coal industry to achieve the goal of “carbon peak” and “carbon neutrality”.
Huaizhan LI   +6 more
doaj   +1 more source

Design and manufacturing of supercritical drying autoclave for aerogel production

open access: yesIraqi Journal of Physics, 2019
This article will address autoclave design considerations and manufacturing working with high pressure low temperature supercritical drying technique to produce silica aerogel.
Ashraf M. Alattar
doaj   +1 more source

Carbon Dioxide, a Solvent and Synthon for Green Chemistry [PDF]

open access: yes, 2005
Carbon dioxide is a renewable resource of carbon when we consider the reuse of existing CO2 as a carbon source for producing chemicals. The development of new applications is of major interest from the point of view of carbon dioxide sequestration and ...
J. S. Condoret   +5 more
core   +1 more source

Numerical simulation of convection heat transfer of supercritical carbon dioxide in horizontal straight tube

open access: yesJournal of Hebei University of Science and Technology, 2019
In order to enhance the heat transfer performance of CO2 heat pump, the heat transfer performance of supercritical carbon dioxide in horizontal straight tube is conducted based on Fluent numerical simulation method. Cooling heat transfer of supercritical
Haiting CUI, Siwen LIU, Shaozheng WANG
doaj   +1 more source

The use of a supercritical carbon dioxide-based solvent as a cost effective and environmentally sound alternative to current photoresist stripping solvents [PDF]

open access: yes, 2002
Plan BThe semiconductor industry is facing challenges that involve the use of photoresist stripping solvents. This literature review compares the current solvents used, namely sulfuric acid and hydrogen peroxide and N-methylpyrrolidine, to an alternative
Knutson, Brian
core  

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