Abstract
There are few measurements of barium sulfate (BaSO4) solubility in water above 373 K available in the literature. BaSO4 solubility data at water saturation pressure are scare. The pressure dependence on BaSO4
solubility has not previously been comprehensively reported for the
pressure range 100–350 bar. In this work, an experimental apparatus was
designed and built to measure BaSO4 solubility in aqueous solutions under high-pressure (HP), high-temperature (HT) conditions. The solubility of BaSO4 was experimentally determined in pure water over the temperature range from T = (323.1 to 440.1) K and pressures ranging from p
= (1 to 350) bar. Most of the measurements were done at water
saturation pressure: six data points were done above the saturation
pressure (323.1–373.1 K) and 10 experiments were conducted at water
saturation (373.1–440.1 K). The reliability of the extended UNIQUAC
model and results generated in this work was demonstrated by comparing
with the scrutinized experimental data reported in the literature. The
model gives a very good agreement with BaSO4 equilibrium
solubility data, demonstrating the reliability of the extended UNIQUAC
model. The accuracy of the model at high temperature and saturated
pressure due to data insufficiencies is discussed.
Original language | English |
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Journal | ACS Omega |
Volume | 8 |
Issue number | 23 |
Pages (from-to) | 20440-20449 |
ISSN | 2470-1343 |
DOIs | |
Publication status | Published - 2023 |