Crystalline polymeric carbon dioxide stable at …
Crystalline polymeric carbon dioxide stable at megabar pressures. Kamil F. Dziubek, Martin Ende, Demetrio Scelta, Roberto Bini, Mohamed Mezouar, Gaston …
High-pressure methane and carbon dioxide adsorption on …
In the context of research on the reduction of CO 2 emissions and the production of coalbed methane (CBM), high pressure adsorption measurements of CH 4 and CO 2 have been performed on dry and moisture-equilibrated Pennsylvanian coals of different rank (0.72, 1.19 and 1.56% VR r).Adsorption isotherms of the two gases were …
Comparison of High Hydrostatic Pressure, High-PressureCarbon Dioxide
Changes of microbial, physicochemical and sensory properties of mulberry juice processed by high hydrostatic pressure (HHP) (500 MPa/5 min), high-pressure carbon dioxide (HPCD) (15 MPa/55 °C/10 min), and high-temperature short time (HTST) (110 °C/8.6 s) during 28 days of storage at 4 °C and 25 °C were investigated. Total …
High-pressure phase equilibrium data of carbon …
Abstract. High-pressure phase equilibrium data involving food-type substances and pure or cosolvent-modified pressurized carbon dioxide (CO 2) …
Inactivation of Saccharomyces cerevisiae by combined high pressure
High pressure carbon dioxide (HPCD) is a promising nonthermal processing technique for food pasteurization or sterilization [10]. HPCD has been shown to successfully inactivate a wide variety of microorganisms naturally present or inoculated in food substrates, including gram-negative bacteria, gram-positive bacteria, yeasts, and molds …
Effect of High Pressure Carbon Dioxide and Ultra-high Pressure …
Effect of High Pressure Carbon Dioxide and Ultra-high Pressure on Structure of Polyphenol Oxidase and Pectin Methylesterase @article{Xiaosong2011EffectOH, title={Effect of High Pressure Carbon Dioxide and Ultra-high Pressure on Structure of Polyphenol Oxidase and Pectin Methylesterase}, author={Hu Xiao-song}, journal={Food …
High-Pressure Carbon Dioxide Removal in Supercritical Water
The utilization of high-pressure water to separate hydrogen from carbon dioxide is described for a biomass gasification process in supercritical water. Based on the higher solubility of carbon dioxide than hydrogen in water, the addition of excess water to the product gas mixture under high pressure results in hydrogen with a purity above 90 ...
Synergetic effects of high-pressure carbon dioxide and …
Fluorescence histograms staining with propidium iodine of Escherichia coli (A–D) and Staphylococcus aureus (E–H) cells treated by nisin, high-pressure carbon dioxide, and combined high-pressure carbon dioxide and nisin at 10 MPa and 32 °C for 15 min. A and E, control; B and F, nisin; C and G, HPCD; D and H, HPCD + nisin.
High pressure carbon dioxide inactivation of
For almost 2 decades now, the use of high-pressure carbon dioxide (HPCD) is also proposed as an alternative non-thermal pasteurization technique for foods (Spilimbergo et al., 2002).The number of published journal articles related to microbial inactivation using HPCD has significantly increased the past 5 years (with a remarkable …
High-pressure vibrational spectroscopy of sulfur dioxide
Solid sulfur dioxide was investigated by vibrational spectroscopy over a broad pressure and temperature range, extending to 32.5 GPa at 75-300 K in diamond anvil cells. Synchrotron infrared spectra provided the first measurements of the pressure dependence of the lattice modes in the far-IR region. Below 17.5 GPa, two fundamentals …
The effect of high pressure carbon dioxide on the …
The effect of high pressure carbon dioxide (HPCD) on the inactivation kinetic and structure of phenylalanine ammonia-lyase (PAL) from Chinese water chestnut (CWC) was studied in this paper. The inactivation kinetic of PAL treated by HPCD (1–4 MPa, 35–55 °C, and 5–60 min) were determined and fitted to the first order kinetics …
Effects of cold plasma, high hydrostatic pressure, ultrasound, and high
In this study, the effects of cold plasma (CP), high hydrostatic pressure (HHP), ultrasound (US), high-pressure carbon dioxide (HPCD), and conventional blanching (BC) as pretreatments on the performance of vacuum freeze-dried jujube slices were investigated. The results indicated that the application of different pretreatments decreased the ...
Review—High-Pressure Carbon Dioxide Separation …
Review—High-Pressure Carbon Dioxide Separation Using Ionic Liquids: A CO 2 -Electrocatalysis Perspective. Andressa Mota-Lima1, Murilo Leite Alcantara1, …
Predicting the phase diagram of solid carbon dioxide at high pressure …
Carbon dioxide (CO 2), the major ingredient of the atmospheres of terrestrial planets, such as Mars and Venus, 1,2 is commonly found in ice form in planets and asteroids. 3 Solid CO 2 has the ...
Mechanisms of Inactivation of Dry Escherichia coli by High-Pressure …
High-pressure carbon dioxide processing is a promising technology for nonthermal food preservation. However, few studies have determined the lethality of high-pressure CO 2 on dry bacterial cells, and the mechanism of inactivation remains unknown. This study explored the mechanisms of inactivation by using Escherichia coli AW1.7 and …
Thermal physical applications of carbon dioxide: Recent …
In the CCUS process, high levels of carbon dioxide are first captured and purified from the exhaust gas of burning fossil fuels. Then CO 2 ... After compression, the pressure of the refrigerant rises and exceeds the critical pressure. The high-pressure CO 2 refrigerant enters the gas cooler for cooling in the 2–3 stage. Stage 3–4 is the ...
[PDF] High-Pressure Carbon Dioxide Used for Pasteurization …
The demand for safe, high-quality food has greatly increased, in recent times. As traditional thermal pasteurization can significantly impact the nutritional value and the color of fresh food, an increasing number of nonthermal pasteurization technologies have attracted attention. The bactericidal effect of high-pressure carbon dioxide has been …
Flow rate analysis of high-pressure carbon dioxide through …
1. Introduction. As a compressible fluid with high thermal stability and low cost, carbon dioxide has been widely used in many fields, such as metallurgy, heat transfer, petroleum, chemical industry [1] [2] [3].In open-loop heat transfer system of high-pressure CO 2, the flow rate of the supplied CO 2 plays a crucial role, so it is necessary …
CARDOX High-Pressure Carbon Dioxide System for …
Chemetron CARDOX™ High-Pressure Carbon Dioxide (CO 2) systems are the best protection for local area hazards, especially capable of quickly extinguishing fires that occur in fire prone processes or equipment. Carbon Dioxide is an odorless, colorless, inert gas that extinguishes fire primarily by diluting the oxygen that supports combustion.
HP-MoO 2 : A High-Pressure Polymorph of Molybdenum Dioxide …
High-pressure molybdenum dioxide (HP-MoO 2) was synthesized using a multianvil press at 18 GPa and 1073 K, as motivated by previous first-principles calculations.The crystal structure was determined by single-crystal X-ray diffraction. The new polymorph crystallizes isotypically to HP-WO 2 in the orthorhombic crystal system in …
Hypercapnia (Hypercarbia): Causes, Symptoms
Any condition that increases CO2 levels or prevents CO2 from getting to your lungs and out of your body can cause hypercapnia. These include conditions that create hypoventilation or V/Q mismatch. Hypoventilation happens when you breathe too slowly or shallowly to remove carbon … See more
Effects of cold plasma, high hydrostatic pressure, ultrasound, and high
In this study, the effects of cold plasma (CP), high hydrostatic pressure (HHP), ultrasound (US), high-pressure carbon dioxide (HPCD), and conventional blanching (BC) as pretreatments on the performance of vacuum freeze-dried jujube slices were investigated. The results indicated that the application of different pretreatments …
High-pressure polymeric phases of carbon dioxide
High-pressure polymeric phases of carbon dioxide | PNAS. Jian Sun, Dennis D. Klug, Roman Martoňák, +3., and Erio Tosatti. Authors Info & Affiliations. Edited by Russell J. Hemley, Carnegie …
Extensive Investigation of High‐Pressure Tungsten Dioxide …
In 1994, M. Sundberg, P.-E. Werner, and I. P. Zibrov characterized the high-pressure modification of tungsten dioxide β-WO 2 on the basis of X-ray powder diffraction data. 4 In this work, we present a precise single-crystal structure determination, temperature dependent X-ray powder diffraction data, magnetic measurements, and DFT calculations ...
High-pressure carbon dioxide solubility in terpene based …
Conclusions. The carbon dioxide solubility properties in four natural deep eutectic solvents at different isotherms and pressures up to 40 bar was studied in this work. The results showed solubility performance profiles that reaches the amine based carbon dioxide capture agent solvent performance at pressures around 30 bar. Considering the ...
Predicting the phase diagram of solid carbon dioxide …
Predicting the phase diagram of solid carbon dioxide at high pressure from first principles. Yanqiang Han, Jinfeng Liu, Lei Huang, Xiao He & Jinjin Li. npj Quantum Materials 4, Article...
Multilayer Electrolyzer Stack Converts Carbon Dioxide to …
The effects of CO2 pressure up to 50 bar, electrolyte concn., flow rate, cell potential, and the two types of membranes on the c.d. (CD) and Faraday efficiency (FE) for formic acid/formate were studied. Increasing the CO2 pressure yields a high FE up to 90% at a cell potential of 3.5 V and a CD of ∼30 mA/cm2.
High-pressure carbon dioxide treatment and vacuum
High-pressure carbon dioxide (HPCD), a novel non-thermal processing technique, is considered the most promising alternative to eliminate enzyme activity (Benito-Roman et al., 2020). HPCD affects the spatial structure of proteins through the dual action of high pressure (through pressures below 50 MPa) and carbon dioxide, thereby …
High-Pressure Carbon Dioxide Used for Pasteurization in …
High-pressure carbon dioxide (HPCD) is a type of nonthermal pasteurization that applies pressurized CO 2, at between 0.1 MPa (1 bar) and 50 MPa (500 bar). Compared with HHP pasteurization technology, HPCD uses less sophisticated equipment, since most microbes can be inactivated at under 50 MPa.
High-pressure carbon dioxide treatment alleviates browning development
The influence of high-pressure carbon dioxide (HPCD) treatment on the browning of fresh-cut lettuce was investigated during storage at 4 °C. The browning degree, color, weight loss, browning-related enzymes, and components related to membrane lipid metabolism of fresh-cut lettuce were assessed during storage. The results showed that …
