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Anne Neville - One of the best experts on this subject based on the ideXlab platform.
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comparison of corrosion behaviour for x 65 carbon steel in supercritical co2 Saturated Water and Water Saturated unSaturated supercritical co2
Journal of Supercritical Fluids, 2015Co-Authors: Richard Barker, Anne NevilleAbstract:The corrosion behaviour of X65 carbon steel was evaluated in supercritical carbon dioxide (SC-CO2)-Saturated Water, Water-Saturated SC-CO2 and under-Saturated SC-CO2 conditions at 80 bar and 50 °C to simulate conditions of CO2 transportation in carbon capture and storage applications. A detailed assessment of localised corrosion and corrosion product film morphology/chemistry was conducted. Localised corrosion is shown to be a fundamental consideration in all environments, particularly in Water-containing CO2 systems. Corrosion was shown to occur when under-Saturated Water was present in the system, however, no dissolution of the steel was observed at Water contents below 1600 ppm at the conditions considered.
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Comparison of corrosion behaviour for X-65 carbon steel in supercritical CO2-Saturated Water and Water-Saturated/unSaturated supercritical CO2
Journal of Supercritical Fluids, 2015Co-Authors: Richard Barker, Anne NevilleAbstract:The corrosion behaviour of X65 carbon steel was evaluated in supercritical carbon dioxide (SC-CO2)-Saturated Water, Water-Saturated SC-CO2 and under-Saturated SC-CO2 conditions at 80 bar and 50 °C to simulate conditions of CO2 transportation in carbon capture and storage applications. A detailed assessment of localised corrosion and corrosion product film morphology/chemistry was conducted. Localised corrosion is shown to be a fundamental consideration in all environments, particularly in Water-containing CO2 systems. Corrosion was shown to occur when under-Saturated Water was present in the system, however, no dissolution of the steel was observed at Water contents below 1600 ppm at the conditions considered.
Richard Barker - One of the best experts on this subject based on the ideXlab platform.
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comparison of corrosion behaviour for x 65 carbon steel in supercritical co2 Saturated Water and Water Saturated unSaturated supercritical co2
Journal of Supercritical Fluids, 2015Co-Authors: Richard Barker, Anne NevilleAbstract:The corrosion behaviour of X65 carbon steel was evaluated in supercritical carbon dioxide (SC-CO2)-Saturated Water, Water-Saturated SC-CO2 and under-Saturated SC-CO2 conditions at 80 bar and 50 °C to simulate conditions of CO2 transportation in carbon capture and storage applications. A detailed assessment of localised corrosion and corrosion product film morphology/chemistry was conducted. Localised corrosion is shown to be a fundamental consideration in all environments, particularly in Water-containing CO2 systems. Corrosion was shown to occur when under-Saturated Water was present in the system, however, no dissolution of the steel was observed at Water contents below 1600 ppm at the conditions considered.
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Comparison of corrosion behaviour for X-65 carbon steel in supercritical CO2-Saturated Water and Water-Saturated/unSaturated supercritical CO2
Journal of Supercritical Fluids, 2015Co-Authors: Richard Barker, Anne NevilleAbstract:The corrosion behaviour of X65 carbon steel was evaluated in supercritical carbon dioxide (SC-CO2)-Saturated Water, Water-Saturated SC-CO2 and under-Saturated SC-CO2 conditions at 80 bar and 50 °C to simulate conditions of CO2 transportation in carbon capture and storage applications. A detailed assessment of localised corrosion and corrosion product film morphology/chemistry was conducted. Localised corrosion is shown to be a fundamental consideration in all environments, particularly in Water-containing CO2 systems. Corrosion was shown to occur when under-Saturated Water was present in the system, however, no dissolution of the steel was observed at Water contents below 1600 ppm at the conditions considered.
Ladislav Dzurenda - One of the best experts on this subject based on the ideXlab platform.
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Evaluation of the Process Thermal Treatment of Maple Wood Saturated Water Steam in Terms of Change of pH and Color of Wood
Bioresources, 2020Co-Authors: Ladislav Dzurenda, Anton Geffert, Jarmila Geffertova, Michal DudiakAbstract:Changes in maple wood’s pH and color (Acer pseudoplatanus) were evaluated before and after thermal treatment process with Saturated Water steam. Maple wood was thermally treated at temperatures: tI = 105 ± 2.5 °C, tII = 125 ± 2.5 °C, and tIII = 135 ± 2.5 °C for τ ≤ 12 hours. Direct pH measurement of maple wood with a moisture content above the fiber saturation point (FSP) was performed using a pH-meter SI 600 with a Lance FET + H puncture probe. The polynomial dependence of pH and total color difference ∆E* on temperature t time τ was calculated by statistical processing of measured results. The correlation between the total color difference ∆E* of maple wood in the process of thermal color modification and the pH value is expressed y the equation: ∆E* = 4.5516∙(pH)2 - 48.405∙(pH) + 134.35. This dependence is a suitable tool for assessing the achieved color change based on the change of wood pH in the technological process.
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The Effect of Moisture Content of Black Locust Wood on the Heating in the Saturated Water Steam during the Process of Colour Modification
MATEC Web of Conferences, 2018Co-Authors: Ladislav DzurendaAbstract:The effect of moisture content of black locust wood on the heating of sawn timber with the thickness of h = 32 mm in Saturated Water steam during the processes of colour modifications by modes: mode I – temperature of Saturated Water steam t = 112 ± 2.5 °C for τ = 5.5 hours, mode II – temperature of Saturated Water steam t = 127 ± 2.5 °C for τ = 6.5 hours, and mode III – temperature of Saturated Water steam t = 137 ± 2.5 °C for τ = 7.5 hours is analysed in the paper. The increase in moisture content affects the heating time, it lasts longer. When the moisture content of black locust wood ranges from W = 60 – 65 %, the heating time by modes I – III did not last longer than the time Δτ ≤ 0.5 min. and no negative impact on the final colour modification is observed.
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The Shades of Color of Quercus robur L. Wood Obtained through the Processes of Thermal Treatment with Saturated Water Vapor
Bioresources, 2018Co-Authors: Ladislav DzurendaAbstract:This paper presents the shades of color of Quercus robur L. wood obtained in the processes of thermal treatment and color modification by Saturated Water vapor, with temperatures: tI = 112.5 ± 2.5 °C for = 5.5 h (mode I), tII = 127.5 ± 2.5 °C for = 6.5 h (mode II), and tIII = 137.5 ± 2.5 °C for = 7.5 h (mode III). The color of oak wood by thermal treatment in mode I changes minimally with mild browning in the CIE-L*a*b* color space: L* = 65.5 ± 1.7; a* = 8.8 ± 0.4; b* = 20.7 ± 0.5. A brown shade with coordinates: L* = 56.8 ± 1.3; a* = 9.3 ± 0.5; b* = 19.4 ± 0.5 is achieved in mode II. Oak wood thermally modified by mode III acquires an original brown-gray color with the color coordinates: L* = 47.5 ± 2.1; a* = 9.4 ± 0.5; b* = 17.1 ± 1.1. The irreversible changes in the color of the oak wood, achieved by some of the color modifications of wood using Saturated Water steam, extend the possibilities of its use in the field of building-joinery, the artistic field, and the field of design.
Govind Rao - One of the best experts on this subject based on the ideXlab platform.
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Steam-sterilizable, fluorescence lifetime-based sensing film dissolved carbon dioxide
Biotechnology Progress, 1998Co-Authors: Qing Chang, Lisa Randers-eichhorn, Joseph R. Lakowicz, Govind RaoAbstract:An autoclavable sensing film was developed for monitoring dissolved CO2. The sensing film, based on fluorescence resonance energy transfer (FRET), consisted of a fluorescent donor, an acceptor, and a quaternary ammonium hydroxide, which were doped in a two-component silicone film. As no aqueous solution was used in the sensing film matrix, the sensing film was unaffected by osmotic pressure. Fluorescence lifetime was selected as the sensing parameter, and measured in frequency domain using phase fluorometry. Upon exposure to 20% CO2-Saturated Water, a 43 degrees increase in phase angle was observed at 100 MHz. The process was fully reversible when the sensing film was exposed to nitrogen-Saturated Water. The estimated response and recovery times for 90% signal change were 1 min (for a step change from 0 to 6.7% CO2-Saturated Water) and 1.5 min (for a step change from 6.7 to 3.3% CO2-Saturated Water). When used for on-line monitoring of dissolved CO2 produced by a culture of Escherichia coli, the sensing film showed a similar trend to that obtained from off-line measurements using a wet chemistry analyzer.
Hiroyuki Ohno - One of the best experts on this subject based on the ideXlab platform.
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design of phosphonium type zwitterion as an additive to improve Saturated Water content of phase separated ionic liquid from aqueous phase toward reversible extraction of proteins
International Journal of Molecular Sciences, 2013Co-Authors: Yuki Kohno, Nobuhumi Nakamura, Hiroyuki OhnoAbstract:We designed phosphonium-type zwitterion (ZI) to control the Saturated Water content of separated ionic liquid (IL) phase in the hydrophobic IL/Water biphasic systems. The Saturated Water content of separated IL phase, 1-butyl-3-methyimidazolium bis(trifluoromethanesulfonyl)imide, was considerably improved from 0.4 wt% to 62.8 wt% by adding N,N,N-tripentyl-4-sulfonyl-1-butanephosphonium-type ZI (P555C4S). In addition, the maximum Water content decreased from 62.8 wt% to 34.1 wt% by increasing KH2PO4/K2HPO4 salt content in upper aqueous phosphate buffer phase. Horse heart cytochrome c (cyt.c) was dissolved selectively in IL phase by improving the Water content of IL phase, and spectroscopic analysis revealed that the dissolved cyt.c retained its higher ordered structure. Furthermore, cyt. c dissolved in IL phase was re-extracted again from IL phase to aqueous phase by increasing the concentration of inorganic salts of the buffer solution.
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Addition of suitably-designed zwitterions improves the Saturated Water content of hydrophobic ionic liquids
Chemical Communications, 2012Co-Authors: Yuki Kohno, Nobuhumi Nakamura, Hiroyuki OhnoAbstract:The Saturated Water content in a hydrophobic ionic liquid, 1-butyl-3-methylimidazolium bis(trifluoromethanesulfonyl)-imide, was improved from 0.4 wt% to 17.8 wt% by adding a 3-(1-butyl-3-imidazolio)propanesulfonate-type zwitterion in appropriate amounts. The mixture containing 17.8 wt% Water successfully dissolved horse heart cytochrome c without significant change of the higher ordered structure.
