Stability of Diesel/Water Emulsions: Experimental and Modeling Investigations

Husain, Arafat; Adewunmi, Ahmad A.; Mahmoud, Mohamed; Al‐Harthi, Mamdouh A.

doi:10.1115/1.4049606

Cited by 4 publications

(1 citation statement)

References 24 publications

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“…For show the significance of the reduced method was comparied the RMSE of the reduced set and the enlarged set. Table 8 shows the RMSE for the set of 31 and 99 points that was calculated between the experimentally observed data versus the values Predicted by MQ31pc (29,30,31). Both sets presented the approximately the same RMSE, that is, the method of reduced formulations is excellent and reproduces very well the enlarged set.…”

Section: Comparison Between Quadratic Models Of Sets Tested With Each Iteration Of Sets (Qmn) and The Quadratic Model With 99 Formulationmentioning

confidence: 88%

Surface modeling as tool for constructing pseudo ternary diagrams

Camilo¹,

Ferreira²,

Costa³

et al. 2021

BJEDIS

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Microemulsions have been developed and evaluated for application in various fields. For their development, ternary phase diagrams are initially constructed, obtained by investigating mixtures of the aqueous and oil phases and a surfactant, to determine the regions composed of liquid microemulsions. However, the construction of these diagrams requires many steps, so simplification of this method can be useful for the formulation and application of these microemulsified systems. Therefore, this article proposes a method to obtain these diagrams employing mathematical modeling, by testing systems composed of kerosene (as oil phase), a nonionic surfactant based on ethoxylated nonylphenol (NP80), and salt water. The study aimed to ascertain which models (linear, quadratic or special cubic) were able to describe the empirical observations, i.e., the ternary phase diagram containing 99 points. The results obtained showed that a quadratic model with a smaller sample (31 points) was able to represent these systems with 61% variability of the observed data and a confidence level higher than 99.9%. The smaller sample (31 points) was defined by means extrapolation lines, as described in the standard ISO11358, permitting identifying the liquid microemulsion regions of the system composed of kerosene, NP80 and salt water. This result is very promising since it permits determining the conditions of interest with significantly less experimental work, and commensurate reduction of the final cost of the experiments.

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Section: Comparison Between Quadratic Models Of Sets Tested With Each Iteration Of Sets (Qmn) and The Quadratic Model With 99 Formulationmentioning

confidence: 88%