Publication Date

2020

Document Type

Thesis

Committee Members

Steven Higgins, Ph.D. (Advisor); David Dolson, Ph.D. (Committee Member); Ioana Pavel, Ph.D. (Committee Member)

Degree Name

Master of Science (MS)

Abstract

In order to develop a better understanding heterogeneous nucleation of barite, barite precipitation was studied under varying experimental parameters. Hydrothermal atomic force microscopy (HAFM) and optical microscopy were used to investigate the effect of change in temperature, supersaturation and varying ratios of ions on heterogeneous nucleation of barite. In the experiments conducted at higher temperatures, the particles thus nucleated were found to display characteristic hexagonal and rhomboidal shapes. In comparing results of particle densities among different ion ratios, there is evidence suggesting that barium to sulfate ratio plays a role of promoter. Wherein, the ratios with higher [Ba2+] concentration were found to show more nucleation occurring. Although, the HAFM cell was used for experimentation, optical microscopy turned out to be a more effective method for analysis of samples.

Page Count

58

Year Degree Awarded

2020


Included in

Chemistry Commons

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