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Engineering Commons

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Theses/Dissertations

Materials Science and Engineering

University of Wisconsin Milwaukee

2022

Articles 1 - 2 of 2

Full-Text Articles in Engineering

Properties Of Titanium Dioxide Nanoparticles Aquesous Dispersions Stabilized By Anionic Surfactants, Anita Vuchkovska Aug 2022

Properties Of Titanium Dioxide Nanoparticles Aquesous Dispersions Stabilized By Anionic Surfactants, Anita Vuchkovska

Theses and Dissertations

The stability of titanium dioxide nanoparticles dispersed in aqueous solutions with and without anionic surfactants was investigated as a function of phase separation (sedimentation), particle size at the age of 33 and 303 days, polydispersity at 33 and 303 days, and zeta potential. Mechanical energy in the form of homogenization or mixing with propeller blade mixer was used to wet out the titanium dioxide (TiO2) nanoparticles in the aqueous media and this process was evaluated for the capability of developing a stable dispersion. The ultrasonic waves were used as a second step to form stable dispersions. The research results indicated …


Nanofiltration Membranes Made From Tppa-1 Covalent Organic Framework Nanofilms, Dalton Sendelbach May 2022

Nanofiltration Membranes Made From Tppa-1 Covalent Organic Framework Nanofilms, Dalton Sendelbach

Theses and Dissertations

Potable water scarcity is a problem growing more severe as water pollution continues to rise and the world population continues to grow. There are many techniques of treating water to remove contaminants and lower salt concentrations to drinkable levels, but there is still a great potential for more sustainable and energy efficient water treatment methods. The use of nanofiltration (NF) membranes appears to be a promising method for treating large quantities of water quickly and without using a lot of energy. Current nanofiltration membranes used for water treatment have not reached their full potential as they still have lower permeances. …