Laboratory data on the interfacial tension, viscosity, and density of two naphthenic acids in n-hexadecane across varying temperatures and concentrations

TL;DR

This study measures how two naphthenic acids in n-hexadecane affect oil-brine interfacial tension, viscosity, and density at different temperatures and concentrations.

Contribution

New experimental data on interfacial tension, viscosity, and density of naphthenic acid solutions in n-hexadecane under varying conditions.

Findings

Interfacial tension measurements were taken using the pendant drop method across temperatures and concentrations.

Viscosity and density data were collected using rotational viscometry at different temperatures.

Results show how acid concentration and temperature influence oil-brine interfacial properties.

Abstract

This paper presents oil-brine interfacial tensions measured using the pendant drop method at temperatures ranging from T = 25.0 to 60.0°C. Test oils were solutions of stearic acid or cyclohexanepentanoic acid in n-hexadecane at concentrations ranging from 0 to 2200 mg/L; the test brine was 5 wt.% NaCl and 1 wt.% KCl in deionized water for all measurements. Also presented are viscosity and density measurements by rotational viscometry at temperatures ranging from T = 20.0 to 80.0°C.

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