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Characterizing Buffers to Maximize Peroxide Production in the Cathode Chamber of Microbial Fuel Cells

Description

Microbial fuel cells (MFCs) facilitate the conversion of organic matter to electrical current to make the total energy in black water treatment neutral or positive and produce hydrogen peroxide to assist the reuse of gray water. This research focuses on wastewater treatment at the U.S. military forward operating bases (FOBs). FOBs experience significant challenges with their wastewater treatment due to their isolation and dangers in transporting waste water and fresh water to and from the bases. Even though it is theoretically favorable to produce power in a MFC while treating black water, producing H2O2 is more useful and practical because it is a powerful cleaning agent that can reduce odor, disinfect, and aid in the treatment of gray water. Various acid forms of buffers were tested in the anode and cathode chamber to determine if the pH would lower in the cathode chamber while maintaining H2O2 efficiency, as well as to determine ion diffusion from the anode to the cathode via the membrane. For the catholyte experiments, phosphate and bicarbonate were tested as buffers while sodium chloride was the control. These experiments determined that the two buffers did not lower the pH. It was seen that the phosphate buffer reduced the H2O2 efficiency significantly while still staying at a high pH, while the bicarbonate buffer had the same efficiency as the NaCl control. For the anolyte experiments, it was shown that there was no diffusion of the buffers or MFC media across the membrane that would cause a decrease in the H2O2 production efficiency.

ContributorsThompson, Julia (Author) / Torres, Cesar (Thesis director) / Popat, Sudeep (Committee member) / Chemical Engineering Program (Contributor) / Barrett, The Honors College (Contributor)

Created2016-05

A new rise of journalism: How journalists across the country are using TikTok to connect with viewers to increase content engagement.

Description

Many social media platforms have changed the way audiences consume news and how journalists operate, and since the implementation of TikTok, more users are hooked than ever before. According to Forbes.com, TikTok was the number one app downloaded globally in 2022, with 672 million downloads. Here in the United States, 99 million people downloaded the app last year (Koetsier, 2023). With TikTok’s popular presence, it revolutionizes the relationship between the audience and journalists to allow them to connect with a younger demographic. TikTok’s societal relevance has not only been elevating, but elevated like never before due to the high engagement and viewership from people across the country. With the slow decline of viewership in local TV news, connecting with viewers is more important than ever. TikTok plays a massive role in delivering the news, especially to viewers who do not have time nor inclination to watch the 6 p.m. news. Journalists can deliver news on TikTok – usually in one minute or less – that is always available to the viewer. TikTok is important to increase content and audience engagement by providing viewers who are already on the platform with fast and constant access to news. While digital areas on news websites exist, adding coverage TikTok provides the viewer with a quick on the go experience while already on the app.

ContributorsBrown, John (Author) / Thompson, Julia (Thesis director) / Fischer, Shana (Committee member) / Barrett, The Honors College (Contributor) / Walter Cronkite School of Journalism and Mass Comm (Contributor)

Created2023-05