Correlations and Estimation of Pure Liquid Viscosity

Viswanath, Dabir S.; Ghosh, Tushar K.; Prasad, D. H. L.; Dutt, N. V. K.; Rani, K. Yamuna

doi:10.1007/978-1-4020-5482-2_4

Cited by 28 publications

(24 citation statements)

References 80 publications

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“…This observation with higher membrane permeability was expected as MEOH was used as the solvent, which is less viscous than water as reported by Viswanath et al 55 Thus, MEOH permeated through the membrane at a higher rate than the water. This is reflected with a lower membrane resistance, R m value measured as compared to the literature values.…”

Section: Model Regression and Validationsupporting

confidence: 74%

Modeling of a membrane reactor system for crude palm oil transesterification. Part II: Transport phenomena

Chong

Lau

et al. 2015

AIChE Journal

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The mechanistic modeling of biodiesel production process in membrane reactor with the consideration of chemical reaction, phase equilibrium, and ultrafiltration is important for the membrane reactor design. In part II of this work, the chemical and phase equilibrium (CPE) model for crude palm oil transesterification reaction in the membrane reactor developed in part I is extended to an integration of CPE with modified Maxwell-Stefan model, which considers multicomponent mass transport phenomena of concentration polarization and intramembrane. A good fit of simulated permeate fluxes and apparent solute rejection to the experimental data shows that the model has a good prediction capability. Reversible fouling was found to be the major fouling and no pore plugging was observed. Simulation results verified that micelles were retained by the membrane at CPO:MEOH molar ratio of 1:24 and catalyst concentration of 0.5 wt %. However, phase inversion happened when catalyst concentration of 0.05 and 0.1 wt % were used.

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Section: Model Regression and Validationsupporting

confidence: 74%

Modeling of a membrane reactor system for crude palm oil transesterification. Part II: Transport phenomena

Chong

Lau

et al. 2015

AIChE Journal

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“…The densities of the two solvents are known [100]. The viscosity of n-dodecane was taken from the literature and that for n-dodecane-d 26 was calculated using an empirical mathematical relationship between molar mass and viscosity for isotopically-labeled compounds: the viscosity is proportional to the square root of the molar mass [101,102]. The analytical centrifugation data were processed using LUMiSizer software to determine the sedimentation velocity of the particles.…”

Section: Nm Diameter Latexesmentioning

confidence: 99%

The internal structure of poly(methyl methacrylate) latexes in nonpolar solvents

Smith

Finlayson

Gillespie

et al. 2016

Journal of Colloid and Interface Science

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“…Thet ypical thickness of the carbon microsphere -p olystyrene composite deposit is 200 mm (see Figure 2D) and therefore with half filling (see Figure 3) typically d = 100 mmd iffusion path is available. Methyllaurate has av iscosity of approximately 3t imes higher than that of water [23],which suggests aquinizarin diffusion coefficient of approximately D = 10 À10 m 2 s À1 and an estimated diffusion time of t = d 2 /D = 100 s, consistent with complete electrolysis requiring several minutes.…”

Section: Carbon Microsphere Composite Voltammetry Ii: Quinizarin Redmentioning

confidence: 86%

Carbon Microsphere – Polystyrene Composite Electrode for Three‐Phase Boundary Oil Analysis: Quinizarin in Methyllaurate

et al. 2015

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Quinizarin (see molecular structure and redox processes in Scheme 1) is water-insoluble in the ambient pH range and has been shown to be electrochemically active. In technical application, quinizarin has been proposed as colorant and anti-corrosion coating for anodised aluminium [11].M olecular quinizarin adsorbed onto carbon has been shown to catalyse the oxygen reduction process [12,13].Q uinizarin has also been shown to act as aM ichael-acceptor when oxidised [14] and this has potential implications in electroanalytical detection of sulphur species.W hen examined as aD NA groove-binding redox reagent, quinizarin has been shown to act as af luorescence reporter in biological samples [15] and it has been investigated as am odel system for anti-cancer drug molecules [16].H owever, the main application of quinizarin is as dye-marker additive in hydrocarbon oils [17,18] for safety and tax reasons.Methyllaurate is am ajor component in bio-fuels [19] and employed here as a" model oil" with quinizarin as a" model redox marker". Then ewly developed electroanalytical method based on ac arbon microsphere composite electrode could be applied to aw ider range of oils containing redox active substances such as anti-oxidants. No electrolyte is added to the oil phase which is deposited directly into ap orous carbon electrode made from ac omposite with glassy carbon microspheres and polystyrene.F igure 1s hows as chematic drawing of the electrode with as mall amount (A) and with ah igher amount (B) of oil deposited. Thee lectrochemical reaction is believed to occur at the three-phase boundary.AFaradaic current is anticipated as long as the electro-analyte (quinizarin in oil) can diffuse towards the three-phase boundary,w here ions (here protons) present in the neighbouring phase can balance the build-up of charge resulting from the electron transfer. From an electroanalytical standpoint, not having to alter or prepare the sample before electrochemical analysis is beneficial and developing as imple "dip-probe" method could be very useful.In this study ac ost efficient and easy-to-make (potentially disposable) porous carbon electrode is fabricated to facilitate three-phase boundary electrochemistry.T he Abstract:O il analysis for the case of quinizarin in methyllaurate is demonstrated with ad isposable carbon microsphere -p olystyrene composite electrode.O xidation and reduction of quinizarin are observed as three-phase boundary processes at the immiscible oil j water j carbon interface.R andomly packed glassy carbon microspheres (2-12 mmd iameter) held together with ap olystyrene binder (ca. 0.1 %b yw eight) are immobilized onto ap encil lead electrode and used for electrochemical oil analysis.P orefilling with oil is optimised for voltammetric detection and fluorescence spectroscopy is employed to support the mechanistic analysis based on voltammetry.F uture applications for aw ider range of oils and additives are proposed.

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Correlations and Estimation of Pure Liquid Viscosity

Cited by 28 publications

References 80 publications

Modeling of a membrane reactor system for crude palm oil transesterification. Part II: Transport phenomena

Modeling of a membrane reactor system for crude palm oil transesterification. Part II: Transport phenomena

The internal structure of poly(methyl methacrylate) latexes in nonpolar solvents

Carbon Microsphere – Polystyrene Composite Electrode for Three‐Phase Boundary Oil Analysis: Quinizarin in Methyllaurate

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