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Showing 1 to 20 of 32 for “"foam stability"”.
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Experimental and Numerical Investigation of Nanotechnology on Foam Stability for Hydraulic Fracturing Application
… in almost all hydraulic fracturing operations. Foam as an alternative fracturing fluid is attracting attention because their liquid content (water) is small, reducing the water usage and reducing damage potential to water-sensitive formations. Foam as a fracturing fluid should remain stable to …
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Surface Forces in Foam Films
Fundamental studies of surface forces in foam films are carried out to explain the stability of foams and froths in froth flotation. The thin film pressure balance (TFPB) technique was used to study the surface forces between air bubbles in water from equilibrium film thickness and dynamic film …
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Foaming properties of whey protein isolate and [lambda]-carrageenan mixed systems
… with improved functional properties. Studies on foaming properties of whey protein isolate (WPI) with polysaccharide mostly focused on the effects of polysaccharide on native WPI or heated WPI, while little has been done on heated WPI-polysaccharide soluble complex. The objective of our research …
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Interfacial properties of saponins from Quillaja saponaria Molina and their functionality in dispersed systems
… be used in dispersed systems like emulsions and foams. Molecular structure of saponins is highly variable as different aglyone types exist to which a varying quantity and type of sugar residues may be linked. Although it is known that saponins with a triterpenoid aglycone form viscoelastic films, …
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Investigating the role of dithiophosphate in the flotation of base metal sulfides
… column was used to determine its effect on foam stability. Reagent dosages used were similar to those used on plant operations, which are much lower than those used in surface tension experiments. Foam stability experiments were carried out at pH 9 using synthetic plant water (SPW) the …
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Foam fractionation of biopolymers: studies of protein behaviour in analytical and preparative systems
… of molecular interactions between proteins upon foam quality in batch and continuous operations, and to investigate foam fractionation as a method of protein recovery from real biological feedstocks. Foam stability studies of model protein solutions acted as engineering indicators and highlighted …
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Investigating the chemical basis of functionality differences between beet and cane sugar sources in model egg white foams and other products
… heat denatured sugar-egg gel texture, unbaked foam stability, and water loss during simulated baking were obtained. No meaningful difference was found between beet and cane meringues in moisture content, water activity, and foam stability prior to baking. After baking, however, beet meringue …
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Removal of metal ions from solution by foam fractionation methods
Foam separation is used as a method for separation of solute from liquid solutions. The physical chemistry of a foam-liquid system was investigated including studies of foam density, foam stability and foam drainage, and the counter-current flow of liquid and foam. The experimental results obtained …
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Lanthanide Binding Tag Peptides for Selective Separation of Rare Earth Elements
… affinity. Two approaches are investigated: (1) Foam-based separations, where LBT:REE complexes adsorb to the air-water interface and are collected in foam. Surface tension, x-ray reflectivity, and fluorescence techniques demonstrate selective interfacial adsorption of Tb<sup>3+</sup>. …
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Mobility control of chemical EOR fluids using foam in highly fractured reservoirs
… is to determine the feasibility of using foam in highly fractured reservoirs to produce oil-rich zones. Multiple surfactant formulations specifically tailored for a distinct oil type were analyzed by aqueous stability and foam stability tests. Several core floods were performed and …
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Caseins micelles crosslinked with transglutaminase: foaming properties as a function of pH
… used 1n food industry due to their recognized foaming properties. The casein term refers to a mixture of four different casein fractions known as asl, as2, B, and K-caseim that are organized m structures called casei micelles (CMs). The foam properties of casei micelles are closely related to …
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Laboratory Investigation of Polymer-flooding, ASP-flooding, and Foam-flooding in Heavy Oil System
… ASP (alkali-Surfactant-Polymer) flooding and ASP-foam flooding. The production mechanisms involved in heavy oil chemical flooding and foam-flooding were studied. Several sandpacks saturated with the heavy oil were first waterflooded. Then either polymer, ASP or ASP-foam flooding was conducted. The …
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Molecular Design Of Lanthanide Binding Tag Peptides For Nanoparticle Assisted Interfacial Separation Of Rare Earth Elements
… slight surface activity, can be recovered via foam fractionation. However, this approach is limited by poor foam stability and the formation of wet foam which negatively impacts selectivity. To address these challenges, we introduce positively aminated silica nanoparticles (NPs), which …
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Macronutrient-Flavonoid Interactions, Effects in Model Food Matrices
… protein functions within a gel, emulsion, and foam matrix. Due to their occurrence in many packaged food products the dairy proteins, sodium caseinate and whey protein isolate were utilized. These extracts were incorporated into each of the above stated matrices at levels that may be plausible …
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Using Lipase to Improve the Functional Properties of Yolk-Contaminated Egg Whites
… of egg whites to form stable and voluminous foams is greatly inhibited by accidental yolk contamination, even at extremely small levels. Experiments were conducted to determine if lipase can regenerate the functional properties of yolk-contaminated egg whites. Treatments included control, …
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Effect of Non-Ionic Surfactants and Nano-Particles on the Stability of Foams
… balance (TFPB) technique were used to study the stability of single foam films produced in the presence of n-alkyl polyoxyethylene (CnEOm) homologues. The results showed that films thin faster than predicted by the classical DLVO theory, which considers contributions from the van der …
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Multiscale Investigation of Surfactant-Driven Fuel Resistance
Aqueous film-forming foams (AFFF) are widely recognized for their exceptional performance in suppressing flammable liquid fires. Their effectiveness stems from the unique ability of fluorinated surfactants, including per- and polyfluoroalkyl substances (PFAS), to rapidly spread across fuel surfaces …
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Modification of soybean proteins by immobilized proteases
… relative viscosity, and improved emulsifying and foaming characteristics. Hydrolysis by immobilized protease(.s) increased solubility, relative viscosity and foaming ability of partially purified fractions. Succinylated soybean proteins had high oil holding capacity, viscosity, emulsifying …
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Greener Surface Active Reagents: Structure, Property and Performance Relationships
… which favors formation of worm-like micelles. Foaming performance of the selected greener surfactant was also evaluated to compare with commercial benchmark system. Even though sodium dodecyl glycinate itself is not a good foaming agent as the petroleum based non-green surfactant sodium lauryl …
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