Blar i NTNU Open på forfatter "Kovalchuk, Karina"
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Multiscale Modeling of Interfacial Mass Transport in Liquid-Liquid Dispersions
Kovalchuk, Karina (Doktoravhandlinger ved NTNU, 1503-8181; 2014:142, Doctoral thesis, 2014)Crude oil is a complex system which consists of many different compounds and substantial amounts of naphthenic acids which can create naphthenate deposits. This can cause significant fouling in the petroleum transport and ... -
Multiscale modeling of mass transfer and adsorption in liquid-liquid dispersions. 1. Molecular dynamics simulations and interfacial tension prediction for a mixed monolayer of mono- and tetracarboxylic acids
Kovalchuk, Karina; Riccardi, Enrico; Grimes, Brian Arthur (Journal article; Peer reviewed, 2014)Phase space trajectories of protonated and deprotonated mono- and tetracarboxylic acid surfactants at an oil/water interface are obtained from molecular dynamics (MD) simulations and are employed to calculate the interfacial ... -
Multiscale modeling of mass transfer and adsorption in liquid-liquid dispersions. 2. application to calcium naphthenate precipitation in oils containing mono- and tetracarboxylic acids
Kovalchuk, Karina; Riccardi, Enrico; Grimes, Brian Arthur (Journal article; Peer reviewed, 2014)A dynamic multicomponent mass transport model is constructed and solved to determine the interfacial composition and bulk phase concentrations of surfactant mixtures containing a synthetic tetracarboxylic acid (BP10) and ... -
Structure and Orientation of Tetracarboxylic Acids at Oil-Water Interfaces
Riccardi, Enrico; Kovalchuk, Karina; Mehandzhiyski, Aleksandar Yordanov; Grimes, Brian Arthur (Journal article; Peer reviewed, 2014)Fouling caused by tetracarboxylic acids in transport and separation process chains involving petroemulsions occurs when the interfacial concentration of tetraacids becomes large enough for calcium ions in the water phase ...