Review
Green & Sustainable Science & Technology
Pawan Kumar, Azadeh Kermanshahi-pour, Satinder Kaur Brar, Marianne Su-Ling Brooks
Summary: Supercritical fluids, such as carbon dioxide and water, show great potential in the fractionation of lignocellulosic biomass in biorefinery processes, providing greener alternatives compared to traditional reagents. Significant research has focused on understanding the impact of process parameters on sugar yield in biorefining processes using supercritical fluids, aiming to enhance efficiency at commercial scale and reduce environmental impact. Additionally, enzymatic hydrolysis of lignocellulosic biomass in supercritical carbon dioxide offers a promising approach for mild reaction conditions and could facilitate one-pot pretreatment and hydrolysis for deriving biofuel and value-added chemicals from renewable resources.
ADVANCED SUSTAINABLE SYSTEMS
(2021)
Article
Chemistry, Physical
Jaime Jaramillo-Gutierrez, J. L. Lopez-Picon, Jose Torres-Arenas
Summary: The Thermodynamic Geometry (TG) of Mie fluids in the subcritical and supercritical region is studied using a third order thermodynamic perturbation theory equation of state (EOS). The R-crossing method of TG is applied to reproduce the coexistence curves related to Mie fluids. The behavior of the R-Widom line is analyzed and found to be dependent on the stiffness and range potential for the Mie fluids. A correspondence states principle is found for the R-Widom line, and a Clausius-Clapeyron-type relation near the critical point in the supercritical region is fulfilled.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Engineering, Chemical
Robert Sterchi, Nobutaka Maeda, Stefan Keller, Beat Zehnder, Daniel M. Meier
Summary: In this study, a new design of ATR-IR cell was proposed for in situ monitoring of fatty acid extraction from almonds under scCO2 conditions. The cell allows real-time measurement of the composition changes of the almonds at pressures up to 450 bar. The fast spectroscopic tracking of extracted components enables easy optimization of scCO2 conditions.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Review
Polymer Science
Igor V. V. Elmanovich, Victor E. E. Sizov, Vadim V. V. Zefirov, Alexandra A. A. Kalinina, Marat O. O. Gallyamov, Vladimir S. S. Papkov, Aziz M. M. Muzafarov
Summary: This article discusses the main known patterns of thermal and/or catalytic destruction of high-molecular-weight organosilicon compounds and outlines the advantages of using supercritical fluids in plastic recycling. It also describes a promising area for further research concerning the application of supercritical fluids for processing the wastes of organosilicon macromolecular compounds.
Article
Engineering, Chemical
Paolo Trucillo, Roberta Campardelli, Iolanda De Marco
Summary: This study focuses on the preparation of oral daunorubicin liposomes using the SuperLip technique, evaluating sustainability indicators and proposing process layout variations to address critical issues. Despite previous studies emphasizing solid, liquid waste, and toxic emissions in the pharmaceutical industry, the environmental sustainability of liposomes has not been explicitly analyzed.
Article
Chemistry, Physical
Paolo Trucillo, Ernesto Reverchon
Summary: By utilizing PEG for liposomes coating and a supercritical assisted process, stable liposomes with sizes ranging from 134 to 166nm were successfully produced. PEG-coated liposomes exhibited controlled drug release, with release time at least three times longer than standard liposomes.
JOURNAL OF SUPERCRITICAL FLUIDS
(2021)
Article
Chemistry, Physical
Aso A. Hassan, Joseph D. Smith
Summary: This study explores the non-catalyzed supercritical methanol process for continuous biodiesel production, showing that higher temperatures and pressures result in increased methyl-ester yield. The use of a new reactor technology can reduce setup costs and improve yields, while also studying the kinetics of the transesterification process under different conditions in supercritical methanol.
Article
Mechanics
Chunxiao Bi, Dongjiang Han, Yao Wu, Yimin Li, Jinfu Yang
Summary: A global heat balance method for supercritical carbon dioxide (S-CO2) high speed tilting pad bearings was developed, taking into consideration the real gas effect, variable thermodynamic properties, and turbulence effect. The influence of the thermal effect on the static and dynamic characteristics of bearings is caused by changes in density, specific heat, and thermal expansion coefficient rather than viscosity, which is different from oil bearings. The study found that the influence of thermohydrodynamic lubrication on static characteristics of S-CO2 tilting pad bearings is more significant than on dynamic coefficients.
Article
Acoustics
Angela Gomez-Gomez, Edmundo Brito-de la Fuente, Crispulo Gallegos, Jose V. Garcia-Perez, Jose Benedito
Summary: This study investigated the intensification of supercritical carbon dioxide (SC-CO2) treatments using high-power ultrasound (HPU) for inactivating fungal and bacterial spores in oil-in-water emulsions. The results showed that HPU enhanced the inactivation of bacterial spores, but had limited impact on fungal spores.
ULTRASONICS SONOCHEMISTRY
(2021)
Article
Engineering, Chemical
Pier Francesco Ferrari, Paolo Trucillo, Giulia De Negri Atanasio, Chiara Bufalini, Roberta Campardelli, Patrizia Perego, Domenico Palombo, Ernesto Reverchon
Summary: Encapsulation of antibodies within liposomes using supercritical fluid-based process called SuperLip was studied. The process enables continuous production of high encapsulation efficiency liposomes with mean diameters ranging between 205 and 501 nm. The effect of operative parameters on liposome properties and antibody entrapment efficiency was investigated.
Article
Engineering, Chemical
T. Jaouhari, S. Marre, T. Tassaing, S. Fery-Forgues, C. Aymonier, A. Erriguible
Summary: High-pressure microfluidic systems have better mixing quality for preparing fluorescent organic nanoparticles compared to conventional liquid systems. This study investigates the fundamental mechanisms of microfluidic supercritical antisolvent process, including the particle precipitation field and nucleation times, using experimental and simulation approaches. Despite the ultra-short mixing time, fluctuations in the supersaturation field can lead to variations in nucleation times.
CHEMICAL ENGINEERING SCIENCE
(2022)
Article
Polymer Science
Zhuojian Wang, Fengxia Liu, Wei Wei, Chao Dong, Zhiyi Li, Zhijun Liu
Summary: A semi-continuous supercritical drying process was developed to improve the efficiency of producing polyimide aerogels. The influence of supercritical fluid parameters on the aerogel properties was investigated based on the vapor-liquid equilibrium diagram. The results showed that efficient supercritical drying was crucial for the comprehensive properties of the aerogel, and subcritical drying conditions below the critical mixture pressure also had special interest.
Article
Chemistry, Physical
Ilya A. Khodov, Konstantin V. V. Belov, Michael A. A. Krestyaninov, Alexey A. A. Dyshin, Michael G. G. Kiselev
Summary: The search for new forms of known drug compounds is important for developing more potent and less side effect drugs. The trifluoromethyl group in flufenamic acid leads to different conformational polymorphs, making it a promising modification of well-known drug molecules. Micronization using green supercritical fluid technologies is an effective approach, and this research focuses on controlling polymorphic forms during the micronization process of drug compounds. The results show that two-dimensional nuclear Overhauser effect spectroscopy can determine the conformational preferences of small drug compounds, aiding in the prediction of polymorphic forms during micronization.
Article
Energy & Fuels
Fajar Febiani Amanda, Noriyoshi Tsuchiya, Vani Novita Alviani, Masaoki Uno, Ryoichi Yamada, Shota Shimizu, Ryosuke Oyanagi
Summary: By examining the silicification zone, we discovered three generations of quartz in a granite-porphyry system. The earliest generation formed at higher temperatures and has bright luminescence and high titanium contents, indicating it is a phenocryst formed in the granitic magma. The second and third generations formed at lower temperatures and have weak to dark luminescence and low titanium contents, suggesting they are replacement products of the earlier quartz and potentially caprocks for a supercritical geothermal reservoir.
Article
Polymer Science
Vener F. F. Khairutdinov, Ilnar Sh. Khabriev, Farid M. M. Gumerov, Rafail M. M. Khuzakhanov, Ruslan M. M. Garipov, Lenar Yu. Yarullin, Ilmutdin M. M. Abdulagatov
Summary: This paper reports on the experimental solubility data of PVC and HPPE in organic solvents at different temperatures and pressures. The effects of HPPE/PVC ratio on the thermal and mechanical characteristics of polymer blends were studied. The results show that the heat of fusion and tensile strength of the obtained polymer blends are higher than those of the pure polymers.
Article
Engineering, Chemical
Nadia Baati, Annik Nanchen, Francis Stoessel, Thierry Meyer
CHEMICAL ENGINEERING & TECHNOLOGY
(2015)
Article
Public, Environmental & Occupational Health
Chantal Imhof, Katherine Clark, Thierry Meyer, Kaspar Schmid, Michael Riediker
JOURNAL OF OCCUPATIONAL HEALTH
(2015)
Article
Engineering, Chemical
Charles Guinand, Michal Dabros, Thierry Meyer, Francis Stoessel
CANADIAN JOURNAL OF CHEMICAL ENGINEERING
(2017)
Article
Engineering, Chemical
D. N. Pluess, Th. Meyer, J. Masin, P. Mikulasek, M. Ferjencik
JOURNAL OF LOSS PREVENTION IN THE PROCESS INDUSTRIES
(2016)
Article
Engineering, Industrial
Sebastian Bruckner, Jean-Luc Marendaz, Thierry Meyer
Article
Biotechnology & Applied Microbiology
Amela Groso, Alke Petri-Fink, Barbara Rothen-Rutishauser, Heinrich Hofmann, Thierry Meyer
JOURNAL OF NANOBIOTECHNOLOGY
(2016)
Article
Engineering, Environmental
L. Mage, N. Baati, A. Nanchen, F. Stoessel, Th. Meyer
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2017)
Article
Thermodynamics
Sebastien Leveneur, Maxime Pinchard, Antoinette Rimbault, Mostafa Safdari Shadloo, Thierry Meyer
THERMOCHIMICA ACTA
(2018)
Article
Chemistry, Organic
Sebastien Alazet, Johannes Preindl, Raphael Simonet-Davin, Stefano Nicolai, Annik Nanchen, Thierry Meyer, Jerome Waser
JOURNAL OF ORGANIC CHEMISTRY
(2018)
Article
Engineering, Industrial
Anna Maria Novello, Elina Buitrago, Amela Groso, Thierry Meyer
Review
Chemistry, Multidisciplinary
Elina Buitrago, Anna Maria Novello, Thierry Meyer
HELVETICA CHIMICA ACTA
(2020)
Article
Nanoscience & Nanotechnology
Fabienne Schwab, Barbara Rothen-Rutishauser, Aline Scherz, Thierry Meyer, Bedia Beguem Karakocak, Alke Petri-Fink
Summary: Waste containing nanomaterials, known as nanowaste, is a global safety concern that requires specific environmentally sound waste management and regulation.
NATURE NANOTECHNOLOGY
(2023)
Article
Education, Scientific Disciplines
Thierry Meyer
EDUCATION FOR CHEMICAL ENGINEERS
(2017)
Proceedings Paper
Engineering, Industrial
Nadia Baati, Annik Nanchen, Francis Stoessel, Thierry Meyer
15TH INTERNATIONAL SYMPOSIUM ON LOSS PREVENTION AND SAFETY PROMOTION (LOSS 2016)
(2016)
Proceedings Paper
Engineering, Multidisciplinary
D. N. Pluess, Th. Meyer, J. Masin, P. Mikulasek, M. Ferjencik
SAFETY AND RELIABILITY: METHODOLOGY AND APPLICATIONS
(2015)