Solid–Liquid–Liquid Equilibria of the System Water, Acetonitrile, and Ammonium Bicarbonate in Multiphase Reacting Systems

Measurement and Modeling of Phase Equilibria in Systems Containing Water, Xylose, Furfural, and Acetic Acid

10.31219/osf.io/qrebp ◽

2021 ◽

Author(s):

Nadia Galeotti ◽

Jakob Burger ◽

Hans Hasse

Keyword(s):

Experimental Data ◽

Acetic Acid ◽

Ternary System ◽

Phase Equilibria ◽

Solubility Limit ◽

Miscibility Gap ◽

Rich Phase ◽

Biotechnological Processes ◽

Solid Liquid ◽

System Water

Wood hydrolysates obtained in biotechnological processes are typically aqueous solutions that contain, among others, sugars, acetic acid, and furfural. Only little is known on the influence of the sugars on the phase equilibria in those mixtures. Therefore liquid-liquid equilibria (LLE), solid-liquid equilibria (SLE), and solid-liquid-liquid equilibria (SLLE) in the system (water(W) + xylose (X) + furfural (F)) were studied in the present work at 298.15 K and 333.15 K. Additionally, the LLE in the system (W + X + F + acetic acid (AA)) was studied at 298.15 K. The results show that, up to the solubility limit of xylose, adding xylose to mixtures of (W +F) hardly influences the width of the miscibility gap, and that there is practically no xylose in the furfural-rich phase. However, the miscibility gap in the ternary system (W + F + AA) is slightly widened by the addition of xylose. The experimental data on the phase equilibria from the present work were described using the NRTL model. The model describes the experimental data well.

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Solid-liquid phase equilibria in the system water+methanol+MgSO4·7H2O+MnSO4·4H2O

Fluid Phase Equilibria ◽

10.1016/j.fluid.2008.11.010 ◽

2009 ◽

Vol 277 (1) ◽

pp. 68-72 ◽

Cited By ~ 1

Author(s):

P. Safaeefar ◽

H.M. Ang ◽

K. Maeda ◽

H. Kuramochi ◽

Y. Asakuma ◽

...

Keyword(s):

Liquid Phase ◽

Phase Equilibria ◽

Solid Liquid ◽

System Water

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Atom-probe analysis of the solid-liquid interface

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100139755 ◽

1995 ◽

Vol 53 ◽

pp. 676-677

Author(s):

J.A. Panitz

Keyword(s):

Molecular Level ◽

Selective Adsorption ◽

Electronic Devices ◽

Atom Probe ◽

Chemical Agent ◽

Hostile Environment ◽

Solid Interface ◽

Solid Liquid Interface ◽

Solid Liquid ◽

Chemically Selective

The first few atomic layers of a solid can form a barrier between its interior and an often hostile environment. Although adsorption at the vacuum-solid interface has been studied in great detail, little is known about adsorption at the liquid-solid interface. Adsorption at a liquid-solid interface is of intrinsic interest, and is of technological importance because it provides a way to coat a surface with monolayer or multilayer structures. A pinhole free monolayer (with a reasonable dielectric constant) could lead to the development of nanoscale capacitors with unique characteristics and lithographic resists that surpass the resolution of their conventional counterparts. Chemically selective adsorption is of particular interest because it can be used to passivate a surface from external modification or change the wear and the lubrication properties of a surface to reflect new and useful properties. Immunochemical adsorption could be used to fabricate novel molecular electronic devices or to construct small, “smart”, unobtrusive sensors with the potential to detect a wide variety of preselected species at the molecular level. These might include a particular carcinogen in the environment, a specific type of explosive, a chemical agent, a virus, or even a tumor in the human body.

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Fibrillin molecules aggregate to form an extendible beaded structure which is a major component of “Elastin Associated” microfibrils

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100153208 ◽

1989 ◽

Vol 47 ◽

pp. 246-247

Author(s):

Douglas R. Keene ◽

B. Kerry Maddox ◽

Marie B. Spurgin ◽

Lynn Y. Sakai ◽

Robert W. Glanville

Keyword(s):

Molecular Sieve ◽

Room Temperature ◽

Culture Medium ◽

Weight Fraction ◽

Ammonium Bicarbonate ◽

High Molecular Weight Fraction ◽

Bicarbonate Buffer ◽

Human Amnion ◽

Gold Conjugate ◽

Ammonium Bicarbonate Buffer

A mouse monoclonal antibody was used to identify beaded aggregates found in guanidine extracts of human amnion as assemblies of fibrillin molecules. These aggregates were also shown to be a major component of extracellular matrix microfibrils. We further demonstrated that the periodicity of these aggregates can be increased when subjected to mechanical stress.Human amnion was extracted with guanidine and the extracted material purified using ion exchange and molecular sieve chromatography. A high molecular weight fraction was precipitated by dialyzing against dilute acetic acid. Part of the precipitate was suspended in 0.2 M ammonium bicarbonate buffer and rotary shadowed. A second portion was resuspended in culture medium containing antibody which recognizes matrix microfibrils, diluted 1:5 in ammonium bicarbonate and reacted for 120 minutes at room temperature. Antibody labeled precipitate was washed by repeated pelleting and resuspension in buffer and then incubated in Janssen GAM 5 nm gold conjugate for 60 minutes at room temperature.

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