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Full-Text Articles in Engineering
Investigation Of Degradation Of Amine Sorbent, Elijah Arendt
Investigation Of Degradation Of Amine Sorbent, Elijah Arendt
Williams Honors College, Honors Research Projects
The purpose of this study is to investigate the performance of amine-grafted sorbents, specifically when they are degraded at 120°C. This study varied the amine source and the amount of it in the sorbent. The additive type and the amount of it was also manipulated. The performance of sorbents is characterized by CO2 capture capacity, which is the amount (in mmol) of CO2 captured per gram of sorbent at 40°C. The best performing sorbents are ones that maintain their CO2 capture capacity after degradation. When the amount of additive was manipulated, the sorbents containing 2% b.w. and …
Separation Of Water From Ulsd Using Superhydrophobic Ps Nanofiber Mats, Alisa G. Webel
Separation Of Water From Ulsd Using Superhydrophobic Ps Nanofiber Mats, Alisa G. Webel
Williams Honors College, Honors Research Projects
Superhydrophobic polystyrene nanofiber membranes have potential to separate micron scale water droplets from organic due to their hydrophobicity and small pore openings. Polystyrene nanofibers were electrospun into flat sheets and cylindrical filter membranes. The fibers were crosslinked to increase strength and reduce solubility in diesel fuel. The filters were tested and the filtration efficiency was compared to their non-crosslinked counterparts. The optimal electrospinning conditions to create superhydrophobic nanofibers were found to be 20 wt. % PS fibers at 1 mL/hr. under a current of 20kV and at a distance of 20 cm away from the ground. It was found that …
Passivation And Potential Fluctuation Of Az31b Alloy In Alkaline Environments, Ana C. Bacco
Passivation And Potential Fluctuation Of Az31b Alloy In Alkaline Environments, Ana C. Bacco
Williams Honors College, Honors Research Projects
Magnesium (Mg) alloys are used in many industries because of their distinctive properties, but their high chemical reactivity and poor oxide film protection make them inferior. This project focused on investigating the effects of secondary phases and intermetallic particles (IMPs) on the corrosion behavior of AZ31B Mg alloy. The test solution was chloride free NaOH with varying pH levels between 10-14, as well as testing under deaerated conditions. The open circuit potential (OCP) measurements using AZ31B in static NaOH solutions showed potential fluctuation between approximately -1.6 VSCE (active state) and -0.4 VSCE (passive state) during the 24-h immersion. …