Theses and Dissertations at Montana State University (MSU)
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Item Adsorption capacity of SAPO-34 and ZSM-5 zeolites determined by breakthrough experiments(Montana State University - Bozeman, College of Engineering, 2016) Ilic, Boris; Chairperson, Graduate Committee: Stephanie WettsteinAlthough it has been known for over 50 years that zeolite frameworks are flexible, it has been only of recent that a systematic investigation into this phenomenon has begun. An area that has not been significantly explored is the affect that zeolite flexibility may have on adsorption capacities. In order to explore this, a flow system was built and assembled, and the system performance was verified by replicating literature ZSM-5/isobutane, ZSM-5/n-hexane, and SAPO-34/methanol adsorption isotherms. Different packing schemes (powders, mixtures, pellets) were studied and corresponding adsorption capacities were evaluated for accuracy and precision. It was found that zeolite powder pressed into pellets led to the lowest deviation from literature values and that larger crystal sizes may also lead to more accurate values. While further investigation into packing methods is recommended, the relatively accurate adsorption capacities that were acquired suggests that the established flow system has been built and calibrated correctly, and that further adsorption experiments probing the flexibility of the zeolite structure can begin.Item The adsorption of the mussel adhesive proteins of the marine mussel, Mytilus edulis, to polymer films(Montana State University - Bozeman, College of Engineering, 1995) Baty, Ace M.Item The influence of calcium on biofilm processes(Montana State University - Bozeman, College of Engineering, 1986) Turakhia, Mukesh HarilalBacteria exhibit a tendency for adsorbing to and colonizing surfaces which are submerged in aquatic environments. Adsorption is mediated by extracellular polymeric material which is formed by the bacteria and extends from the cell to the attachment surface. The attached cells reproduce and form additional extracellular polymer increasing the mass of the deposit. The cellular-extracellular matrix is termed a bipfilm. The purpose of this study was to investigate the effect of calcium on cellular reproduction and extracellular polymer formation by Pseudomonas aeruginosa in a biofilm. Experiments were conducted with a pure culture of Ps. aeruginosa using fixed film bioreactors with glucose serving as the limiting nutrient. Results indicate calcium increases the rate and extent of cellular carbon accumulation at the surface. However, there was no effect of calcium on the amount of polymer carbon accumulated on the surface. Results also suggest that free calcium (or calcium assisted ligands) is essential to the structural integrity of the biofilm. The energy required for biochemical conversion of glucose into biomass by suspended or immobilized culture of Ps. aeruginosa was constant and was independent of time, biomass concentration, specific cellular growth rate, and calcium concentration in the medium.Item Dehydration of an ethanol-water mixture by sorption using barley as the sorbent(Montana State University - Bozeman, College of Engineering, 1983) Law, JamesItem Equilibrium and response curve analyses on the adsorption of CaCl₂and Ca(NO₃)2 using a retardation resin(Montana State University - Bozeman, College of Engineering, 1982) Rehor, Jeffrey EdwardItem Sorption of water vapor from an ethanol-water mixture using barley as the sorbent(Montana State University - Bozeman, College of Engineering, 1983) Graham, Glenn Kenneth