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Impact Umaine Research, December 2022, Office Of The Vice President For Research, Dean Of The Graduate School
Impact Umaine Research, December 2022, Office Of The Vice President For Research, Dean Of The Graduate School
General University of Maine Publications
Celebrating the Climate Change Institute's 50th anniversary, first 100% bio-based 3D-printed home, and more. Featured stories include: UMaine Climate Change Institute celebrates 50th anniversary; New UMaine PFAS+ Initiative strives to address forever chemicals crisis; First 100% bio-based 3D-printed home unveiled at the University of Maine; Verma leads UMaine to create new offshore wind opportunities for students; New study outlines ways to recruit more women for bioenergy and forestry.
Immiscible Liquid-Infused Filters For Water And Aerosol Filtration, Justin Hardcastle
Immiscible Liquid-Infused Filters For Water And Aerosol Filtration, Justin Hardcastle
Electronic Theses and Dissertations
In the purification of water and air, membrane fouling is an ongoing issue that leads to the reduction of filter efficiency over time. An increase in the frequency of current chemical and mechanical cleaning methods increases system downtime, increases overall costs, and leads to the reduction of the lifetime of the membrane. Commonly used filtration materials such as polytetrafluorethylene (PTFE) and polyvinylidene fluoride (PVDF) are porous throughout and have a textured surface that facilitates the adhesion of bacteria and other foulants. To prevent this adhesion, bioinspired liquid-coated filters are proposed as a new approach to creating filters that resist fouling. …
Solvent Effects In Phenol Hydrogenation On A Supported Ruthenium Catalyst, Daniel Mckeon
Solvent Effects In Phenol Hydrogenation On A Supported Ruthenium Catalyst, Daniel Mckeon
Honors College
Growing concerns around climate have piqued interest in using biobased alternatives in place of fuels and chemicals traditionally made from petroleum. Lignocellulosic biomass has been noted for its potential as a biobased chemical precursor in the context of a biorefinery. It can be pyrolyzed to yield an oil, but catalytic upgrading is required to lower oxygen content to suitable levels. Ruthenium supported on titania has been identified as a catalyst suitable for hydrodeoxygenation of oxygenated aromatic pyrolysis products in the liquid phase. In liquid phase reactions, intermolecular attractions between the solvent and the reactants can significantly change chemical activities and …
Estimated Greenhouse Gas Emissions From Pfas Treatment Of Maine Drinking Water, Benjamin L. Mcalexander, Onur G. Apul, Mitchell R. Olson, Jean Macrae
Estimated Greenhouse Gas Emissions From Pfas Treatment Of Maine Drinking Water, Benjamin L. Mcalexander, Onur G. Apul, Mitchell R. Olson, Jean Macrae
Maine Policy Review
State law requires the adoption of a maximum contaminant level (MCL) for PFAS contamination in drinking water by June 1, 2024. While discussion of mitigation options has included the degree of risk reduction and the cost of treatment, indirect environmental effects are missing from the conversation. Until other technologies are developed, water treatment in Maine will likely rely on the established, energy-intensive method of PFAS adsorption (binding) to granular activated carbon. We conducted an inventory of greenhouse gas emissions associated with water treatment using this treatment media to fill gaps in the discussion. We found that greenhouse gas emissions for …