Article
Engineering, Chemical
L. Antonio Estevez, Fredy J. Colpas, Erich A. Mueller
Summary: A new equation-of-state (EoS) scheme is presented for correlating the solubility of solids in supercritical fluids. The method is straightforward and does not require iteration, making it simpler than conventional EoS calculations.
CHEMICAL ENGINEERING SCIENCE
(2021)
Article
Engineering, Aerospace
Mingshuo Zhou, Wei Chen, Xingyu Su, Chih-Li Sung, Xingjian Wang, Zhuyin Ren
Summary: This study develops data-driven models for accurate density estimation of various fuels, showing superior accuracy compared to traditional equations by considering the inherent correlations among data samples and using pressure and temperature as input variables.
Article
Thermodynamics
T. Lyras, I. K. Karathanassis, N. Kyriazis, P. Koukouvinis, M. Gavaises
Summary: This study numerically predicted the two-phase flow of liquid oxygen in rocket engine boosters, compared the predictive capabilities of pressure-based and density-based solvers, and assessed different approaches for phase-change rate and thermodynamics closure.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2021)
Article
Chemistry, Physical
Nadia Esfandiari, Seyed Ali Sajadian
Summary: This study investigated the solubility of Lacosamide in supercritical carbon dioxide and used various models and theories for correlation. The results showed that the PC-SAFT and K-J models had the highest accuracy. The data can be used for selecting appropriate methods for producing nanoparticles and nanocomposites.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Mechanics
Lilian Lin, Young Lee, Heon E. Park
Summary: Biodegradable plastics, despite their potential in reducing plastic pollution, are not widely recycled due to their ability to decompose. It is important to develop recyclable biodegradable plastics. A study on cutlery made of PLA and talc revealed that while recycling may reduce mechanical strength, it has minimal impact on the product.
Article
Thermodynamics
Nadia Esfandiari, Seyed Ali Sajadian
Summary: This article investigates the solubility of Glibenclamide in supercritical fluid for the first time. Six empirical models were used to analyze the correlation, and the results showed that Sodeifian et al. and MST models exhibited the highest accuracy.
FLUID PHASE EQUILIBRIA
(2022)
Article
Chemistry, Physical
Mao Ye, Abduladheem Turki Jalil, Zainab Ali Bu Sinnah, Farag M. A. Altalbawy, Radhwan M. Hussein, Yaser Yasin, Ali Abdul Kadhim Ruhaima, Munther Abosaooda, Abdullah Alshetaili, Enas Abdulgader Hassan
Summary: This study analyzed and optimized the solubility of pantoprazole sodium sesquihydrate using four different tree-based models. All of these models, after optimization, showed an R2-score of more than 0.9. Finally, extreme gradient boosting was selected as the main model, which had a maximum error of 1.07×10-2 and an RMSE error rate of 5.85×10-3.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Thermodynamics
Junfeng Bai, Peng Zhang, Chong-Wen Zhou, Hao Zhao
Summary: The Virial equation of state was used to study the impact of real-fluid on H2 oxidation simulation. Unlike conventional empirical methods, the Virial method considers intermolecular interactions and molecular polarizations in addition to critical pressures and temperatures. The Virial method was incorporated into the Cantera software, leading to more accurate simulations and better agreement with experimental data compared to the Redlich-Kwong method. This method also performs well in predicting H2 ignition delay times and speciation profiles.
COMBUSTION AND FLAME
(2022)
Article
Chemistry, Physical
Warren Stiver
Summary: Chrastil's semi-empirical model has been widely used for fitting solubility data in supercritical carbon dioxide since 1982. Differences in using different sources for carbon dioxide's density, objective functions, and numerical algorithms have led to unnecessary variance in fitting performance and Chrastil coefficient values. This study using Span and Wagner's Fundamental Equation of State and a Nelder Mead algorithm achieved a median AARD of 8.8% for 701 binary data sets, with only 5.2% of systems having an AARD greater than 30%.
JOURNAL OF SUPERCRITICAL FLUIDS
(2021)
Article
Multidisciplinary Sciences
Fardad Faress, Amin Yari, Fereshteh Rajabi Kouchi, Ava Safari Nezhad, Alireza Hadizadeh, Leili Sharif Bakhtiar, Yousef Naserzadeh, Niloufar Mahmoudi
Summary: This study introduces a universal correlation based on the modified version of the Arrhenius equation to estimate the solubility of anti-cancer drugs in supercritical carbon dioxide (CO2). The proposed correlation demonstrates improved accuracy compared to existing empirical correlations, with an absolute average relative deviation (AARD) of 9.54% for predicting experimental measurements. The primary outcome of this study is a 56.2% improvement in the solubility prediction of anti-cancer drugs in supercritical CO2.
SCIENTIFIC REPORTS
(2022)
Article
Chemistry, Physical
B. Ibrahimoglu, Y. Sarikaya, A. Veziroglu, B. Ibrahimoglu Jr, M. Onal, B. Gokbel
Summary: Hydrogen density-pressure and density-temperature phase diagrams were constructed and evaluated based on experimental data, identifying different regions and discussing the differences in equilibrium boundaries between subcritical and supercritical phases, as well as the thermodynamic explanation for the formation of supercritical fluids.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Food Science & Technology
Luping Gu, Han Jiao, David Julian McClements, Mengyao Ji, Junhua Li, Cuihua Chang, Shijian Dong, Yujie Su, Yanjun Yang
Summary: The study demonstrates that a two-step processing method utilizing enzymatic treatment combined with subcritical fluid extraction can effectively reduce the lipid content and improve water-solubility of egg yolk powder, providing a new pathway for its utilization in food products.
LWT-FOOD SCIENCE AND TECHNOLOGY
(2021)
Article
Pharmacology & Pharmacy
Phuong Tran, Jeong-Sook Park
Summary: Many newly discovered chemical entities in the pharmaceutical industry suffer from low aqueous solubility, leading to poor bioavailability, which poses a challenge for pharmaceutical scientists. Solid dispersion (SD) technology, particularly the use of supercritical fluid (SCF) technology, has been successful in overcoming these challenges and enhancing dissolution and bioavailability of poorly water-soluble drugs.
INTERNATIONAL JOURNAL OF PHARMACEUTICS
(2021)
Article
Multidisciplinary Sciences
Tahereh Rezaei, Vesal Nazarpour, Nahal Shahini, Soufia Bahmani, Amir Shahkar, Mohammadreza Abdihaji, Sina Ahmadi, Farzad Tat Shahdost
Summary: Understanding the solubility behavior of drugs in supercritical carbon dioxide is crucial for designing pharmaceutical processing using supercritical technology. This study utilizes machine learning scenarios to simulate the solubility of twelve non-steroidal anti-inflammatory drugs in SCCO2. The results show that adaptive neuro-fuzzy inference is the best tool for this task, and increasing temperature and pressure lead to increased drug solubility.
SCIENTIFIC REPORTS
(2022)
Article
Chemistry, Physical
Umme Hani, Zainab Ali Bu Sinnah, Ahmad J. Obaidullah, Jowaher Alanazi, Muteb Alanazi, Tareq Nafea Alharby, Ahmed Abdullah Al Awadh, Ahmed A. Lahiq
Summary: This research aims to predict the solubility of Febuxostat in the supercritical CO2 system using three models (QR, MLR, and MLP). After optimization and evaluation, the MLP model was found to be the best among them.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Chemistry, Physical
P. Belmonte, J. M. Garcia-Vargas, J. F. Rodriguez, I. Garrido, M. T. Garcia, M. J. Ramos
Summary: In this study, four polythiourethane films with different types of polyols and isocyanates were synthesized, characterized, and foamed. The results showed that the type of isocyanate greatly influenced the crystallinity and stiffness of the polymers, while the type of polyol modified the FT-IR spectra and the decomposition curve of the material with temperature. Furthermore, the choice of isocyanate also affected the properties of the foams obtained from the polymeric material.
JOURNAL OF SUPERCRITICAL FLUIDS
(2024)
Article
Chemistry, Physical
Xutao Zhu, Jianguo Yan, Shouchun Liu, Fengling Zhu
Summary: This study experimentally assessed the hydrodynamic characteristics of supercritical-pressure R134a in a horizontal circular tube. It was found that the hydrodynamic characteristic curve of R134a under supercritical pressure does not have a negative-slope region but a transition region. The transition region becomes more evident with increasing heat flux, while it weakens with increasing pressure and inlet temperature. Moreover, the onset of the transition region shifts in the direction of high mass flow rate with increasing heat flux.
JOURNAL OF SUPERCRITICAL FLUIDS
(2024)
Article
Chemistry, Physical
Stefania Mottola, Iolanda De Marco
Summary: In this study, corticosteroids were micronized with cyclodextrin using Supercritical Assisted Atomization (SAA), resulting in spherical micrometric particles with improved dissolution time.
JOURNAL OF SUPERCRITICAL FLUIDS
(2024)
Article
Chemistry, Physical
Honghai Liu, Yu Xie, Zhilan Li, Xiaokai Zhang
Summary: This study compared the effects of supercritical carbon dioxide dewatering (SCD) and conventional kiln drying (CKD) at a temperature of 55 degrees C on the dewatering rate, moisture transfer and distribution, shrinkage, and stress characteristics of bamboo strips. The results showed that SCD had a faster dewatering rate and lower shrinkage compared to CKD, but was less effective in reducing drying stress in bamboo.
JOURNAL OF SUPERCRITICAL FLUIDS
(2024)
Article
Chemistry, Physical
Tahmasb Hatami, Ozan N. Ciftci
Summary: This study fills the gap in previous research by establishing a hierarchy of significance for factors affecting SFE profitability, providing a deeper understanding of how technical and economic factors impact profitability. The findings highlight that the SFE facility becomes profitable when the extractor capacity surpasses 42 L.
JOURNAL OF SUPERCRITICAL FLUIDS
(2024)
Article
Chemistry, Physical
Tingshan Guo, Chuang He, Zhiyuan Liang, Qinxin Zhao
Summary: The initial oxidation behavior of Fe10Cr and Fe20Cr alloys in supercritical H2O and supercritical CO2 with O2 has been investigated. The results show that O2 has the highest adsorption energy on FeCr alloys and reacts faster than H2O and CO2.
JOURNAL OF SUPERCRITICAL FLUIDS
(2024)
Article
Chemistry, Physical
Vikash Chandra Roy, Jin-Seok Park, Ahmed Redwan Haque, Md Sadek Ali, Hee-Jeong Lee, Byung-Soo Chun
Summary: This research aimed to valorize brewery spent grain (BSG) using subcritical water hydrolysis (SWH) modified by six different natural deep eutectic solvents (DES) and determining their bipotentialities. The findings showed that BSG hydrolysates obtained through DES-induced SWH contained high levels of sugars, proteins, flavonoids, phenolic compounds, and essential amino acids. The hydrolysates also demonstrated antimicrobial activities, and the presence of bioactive compounds was confirmed through FT-IR analysis. This comprehensive profiling of bioactive compounds from BSG using DES-mediated SWH can contribute to the efficient valorization of BSG for industrial purposes.
JOURNAL OF SUPERCRITICAL FLUIDS
(2024)
Article
Chemistry, Physical
Kailiang Zhang, Hanyu Wang, Tong Liu, Zhu Wang, Lvxing Wang, Ping Fan, Feng Chen, Mingqiang Zhong, Bozhen Wu, Shanqiu Liu, Jintao Yang
Summary: This study investigates the influence of foam cell structure on the electromagnetic interference shielding performance of conductive polymer composite foam. The results suggest that foamed composites exhibit improved EMI shielding performance, and bimodal cell foams have higher electric conductivity but lower EMI shielding compared to uniform cell foams.
JOURNAL OF SUPERCRITICAL FLUIDS
(2024)
Article
Chemistry, Physical
Jaromir Valtr, Petr Roztocil, David Dasek, Radek Musalek, Frantisek Lukac, Jakub Klecka, Marek Janata, Mariana Arnoult-Ruzickova, Eva Mistova, Ludek Jelinek, Petr Sajdl, Jan Macak
Summary: This paper focuses on the design of an experimental facility for in-situ electrochemical testing at supercritical water conditions, including the design of the electrode system and surface insulation coating for electrode leads.
JOURNAL OF SUPERCRITICAL FLUIDS
(2024)
Article
Chemistry, Physical
Richard Djimasbe, Mikhail A. Varfolomeev, Nailya M. Khasanova, Ameen A. Al-Muntaser, Rustam R. Davletshin, Muneer A. Suwaid, Gazinur Z. Mingazov
Summary: This study confirms the capability of supercritical water to generate active hydrogen that interacts with different fractions in unconventional feedstocks, leading to synthetic oil production during hydrothermal reactions. The findings suggest that a maximum yield of 16.78% can be achieved at a temperature of 380 oC and a reaction time of 1-12 hours.
JOURNAL OF SUPERCRITICAL FLUIDS
(2024)