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Title: A technical study of the solids of skimmed milk
Creator: Whittington, J. A., Wilson, L. T., Yonkman, W.
Date: 2009, 1914
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/technicalstudyof00whit
Thesis (B.S.)--Armour Institute of Technology; Bibliography: leaf 25

Title: YIELD STRESS MEASUREMENTS USING NOVEL SQUEEZING FLOWS
Creator: Ward, Daniel
Date: 2015, 2015-12
Description: Techniques for measuring the yield stress of materials are numerous, but often plagued with diffculties and uncertainties in measurement. The...
Show moreTechniques for measuring the yield stress of materials are numerous, but often plagued with diffculties and uncertainties in measurement. The primary methods include shear rheometry and, more recently, squeezing ow. Shear rheometry requires care on the part of the experimentalist to generate uniform flow fields and avoid shear banding or wall slip which may interfere with measurements. Squeezing fow tests are often performed with poorly controlled boundary conditions creating complicated flow fields. Further, the effects of the experimental modifications made to produce these boundary conditions in measurements are often not investigated and simply ignored. The main objective of this study was to develop a novel measuring technique to study the yield stress behavior of a model material, Carbopol. First attempts were made towards a novel lubricant injection squeezing (LIS) ow technique based on the continuous lubricated squeezing ow (CLSF) setup, as well as a novel lubricant film squeezing (LFS) technique which will allow measurement of the yield stress without the complicated treatment of either the sample or experimental setup required by currently favored methods. The novel techniques were developed and validated by direct comparison with shear measurements, the current gold standard for determining yield stress. Common squeezing techniques for characterizing yield stress fluids were also compared and found to be inadequate and inconsistent when compared to the shear measurements. The results from this study showed that the LIS and LFS methods are able to qualitatively determine a yield stress, but further investigation is required before they can be achieve their full potential as viable methods for determine yield stress.
M.S. in Chemical Engineering, December 2015
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Title: The treatment of stock yard's sewage by the activated sludge process
Creator: Newman, Joseph Julius
Date: 2009, 1917
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/treatmentofstock00newm
Thesis (B.S.)--Armour Institute of Technology; Includes folded leaves in back pocket

Title: A METHODOLOGY FOR UTILIZATION OF DEGRADED WATER IN THERMOELECTRIC POWER PLANT COOLING SYSTEMS
Creator: Safari, Iman
Date: 2013, 2013-12
Description: The overall objective of this study was to develop a comprehensive methodology to identify viable treatment strategies for utilization of...
Show moreThe overall objective of this study was to develop a comprehensive methodology to identify viable treatment strategies for utilization of degraded waters for cooling in thermoelectric power systems. To achieve this objective a process simulation model was developed using Aspen Plus® with the OLI (OLI System, Inc.) water chemistry model to predict water quality and the rate of fouling in the recirculating cooling loop utilizing secondary-treated municipal wastewater (MWW) and tertiary-treated municipal wastewater as the sources of makeup water. This process simulation model includes sub- models for pre-treatment units; the cooling tower with water, CO2, and NH3 evaporation; as well as the recirculating cooling system and condenser with salt precipitation and fouling. The input parameters of the model, including CO2 mass transfer coefficients in the cooling tower and kinetics of salts precipitation reactions, were determined by developing mathematical models and calibrating the models with the experimental data obtained from literature. The process simulation module was used to predict the water quality in the recirculating cooling loop and the results were compared with pilot-scale experimental data from literature on makeup water alkalinity, loop pH and ammonia evaporation. The effects of various parameters including makeup water quality, salt formation, NH3 and CO2 evaporation mass transfer coefficients, heat load and operating temperatures were investigated. The results indicate that stripping of CO2 and NH3 in the cooling tower can significantly affect the cooling loop pH. x viii The model was also used to determine the rate of fouling in the condenser. The results indicate that the fouling rate of MWW as makeup water is significantly higher than that expected with fresh water, and tertiary treatment of MWW such as nitrification and/or softening can significantly reduce the fouling potential. Finally, the rate of fouling obtained from this study was integrated into the existing cost model developed earlier (at Illinois Institute of Technology) to perform the overall economic analysis. The results show that the use of municipal wastewater (MWW) to replace freshwater as makeup for the recirculating cooling loops of thermoelectric power plants is economically viable when tertiary treatments such as nitrification or softening are applied. Among various treatment strategies studied, nitrification of MWW has the lowest cost of 0.29 $/m3 for utilization in a 550 MW power plant. Furthermore, it was concluded that utilization of secondary treated municipal wastewater (MWW) without tertiary treatments such as nitrification or softening is not economically viable due to its significant fouling costs.
PH.D in Chemical Engineering, December 2013
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Title: Investigation of special steels
Creator: Andrews, E. E., Winser, R. A.
Date: 2009, 1908
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/investigationofs00andr
Thesis (B.S.)--Armour Institute of Technology

Title: SLIP-LINK MODELING OF ENTANGLED POLYMERS: RHEOLOGICAL APPLICATIONS AND EXTRACTING FRICTION FROM ATOMISTIC SIMULATION
Creator: Katzarova, Maria
Date: 2016, 2016-05
Description: The Discrete Slip-link Model (DSM) is a robust mesoscopic theory that has great success predicting the rheology of flexible entangled polymer...
Show moreThe Discrete Slip-link Model (DSM) is a robust mesoscopic theory that has great success predicting the rheology of flexible entangled polymer liquids and gels. In the most coarse-grained version of the DSM, we exploit the university observed in the shape of the relaxation modulus of linear monodisperse melts. For this type of polymer we present analytic expressions for the relaxation modulus. The high-frequency dynamics which are typically coarse-grained out from the DSM are added back into these expressions by using a Rouse chain with fixed ends. We find consistency in the friction used for both fast and slow modes. Using these analytic expressions, the polymer density, the molecular weight of a Kuhn step, Mk, and the low-frequency cross-over between the storage and loss moduli, G' and G", it is now straightforward to estimate model parameter values and obtain predictions over the experimentally accessible frequency range. Moreover it has previously been shown that the two static parameters can be obtained from primitive path analysis of molecular dynamics simulations. In this work, two ways are shown for obtaining the friction parameter (i) from atomistic simulations of short chains using the free-volume theory, and (ii) from atomistic simulations of entangled chains by scaling the chain center-of-mass mean-square displacement from the slip-link model to that of the atomistic simulation. Futhermore three standing challenges for molecular theories of polymers (i) predictions for uniaxial extension of star-branched polymer melts (ii) predictions for blends of star-branched and linear chains and (iii) predictions for normal stress differences in start-up of shear and followoing cessation are addressed here using the DSM. Additionally the DSM is used to predict the mechanical properties of a cross-linked polydimethylsiloxane (PDMS) network swollen with non-reactive entangled PDMS solvent. These successful predictions strongly suggest that the observed rheological modification in the swollen blend arises from the constraint dynamics between the network chains and the dangling ends.
Ph.D. in Chemical Engineering, May 2016
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Title: RHEOLOGY OF ENTANGLED POLYMER LIQUIDS IN EQUIBIAXIAL ELONGATIONAL FLOWS
Creator: Mick, Rebecca M.
Date: 2015, 2015-05
Description: Equibiaxial deformation is an important flow in industrial processes such as film blowing and blow molding. Unfortunately, it is very...
Show moreEquibiaxial deformation is an important flow in industrial processes such as film blowing and blow molding. Unfortunately, it is very difficult to implement experimentally which has led to empirical design of these processes. A technique called continuous lubricated squeezing flow (CLSF) has been developed to perform equibiaxial deformation on systems such as polymer melts. This technique is used in this study to measure the behavior of entangled polymer melts in equibiaxial elongation to further the understanding of these materials in industrially relevant flows. The results of CLSF experiments on three linear chain polymer systems show strain softening for strain rates resulting in Weissenberg numbers, Wi = ε˙Bτd > 1. Higher rates lead to greater softening. The deviation from the linear viscoelastic (LVE) prediction occurs at about a strain of one for all the materials. Equibiaxial and shear behavior were compared for two monodisperse linear systems. When normalized by LVE behavior, the two flows yield similar behavior such that the equibiaxial rheology could be inferred from shear rheology. Unfortunately, polydisperse linear and branched systems did not show the same behavior. The two monodispere systems were compared to the GLaMM and Discrete Slip-Link molecular theories. Neither model could successfully predict the equibiaxial behavior; both predicted excessive strain softening and a premature deviation from LVE. Recent literature has suggested that based on uniaxial measurements, dilution changes the behavior of an entangled polymer system. This is contrary to theories of polymer dynamics. A pure melt and diluted melt with the same entanglement density were compared in shear and equibiaxial flows after adjusting for changes in friction. The results were consistent with universality principles of entangled polymers; the uniaxial results require further investigation.
Ph.D. in Chemical Engineering, May 2015
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Title: MODELING AND NUMERICAL SIMULATION OF WIND TURBINE PERFORMANCE IN RAINY CONDITIONS USING A MULTIPHASE FLOW APPROACH
Creator: Cai, Ming
Date: 2012-04-25, 2012-05
Description: Wind energy is becoming one of the key renewable sources of energy in the United States and the world due to its environmental and economic...
Show moreWind energy is becoming one of the key renewable sources of energy in the United States and the world due to its environmental and economic advantages and absence of water requirements. The performance of a wind turbine is largely affected by surrounding environments and the total power output of a wind farm is closely related to meteorological phenomena such as rain and icing. Investigating the effects of these phenomena is necessary to improve the design and performance of the wind turbines. In this research, we focused on the study of wind turbine performance in rainy conditions as the stepping stone to the future study of icing. We applied Computational Fluid Dynamics (CFD) technology to investigate the impact of rain on wind turbines. A novel model coupling the Lagrangian method with the Eulerian method was developed. The rain droplet was tracked in the Lagrangian frame due to its discrete nature, and the film formed on the wind turbine was simulated with the Eulerian Volume of Fluid Model (VOF). The performance loss and impact on the flow field were also studied. Numerical studies have been conducted on 2-Dimensional S809 airfoils and 3- Dimensional Horizontal Axial Wind Turbines (HAWT). The performance loss under heavy rain conditions was observed and the flow field was analyzed. The impact of air moisture content on wind turbine performance was also studied using our 3-D model. Due to the lack of experimental data on wind turbine performance under heavy rain conditions, our coupled two phase flow model was applied to a NACA 64-210 airfoil to compare with the experimental data in rainy conditions. Simulation results using our model showed good agreement with the experimental data.
M.S. in Chemical and Biological Engineering, May 2012
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Title: Micro-structure of certain high-speed steels
Creator: Pulsifer, H. B.
Date: 2009, 1915
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/microstructureof00puls
Thesis (B.S.)--Armour Institute of Technology; Bibliography: leaves 3-6

Title: The crystallization of potassium manganate
Creator: Luckow, W. C.
Date: 2009, 1920
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/crystallizationo00luck
Thesis (B.S.)--Armour Institute of Technology, 1920 Bibliography: leaves 48-49 B.S. in...
Show morehttp://www.archive.org/details/crystallizationo00luck
Thesis (B.S.)--Armour Institute of Technology, 1920 Bibliography: leaves 48-49 B.S. in Chemical Engineering, 1920
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Title: The electrostatic precipitation of soaps from oils
Creator: Dowse, G. M., Brueckner, M. O.
Date: 2009, 1921
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/electrostaticpre00dows
Thesis (B.S.)--Armour Institute of Technology; Bibliography: leaves 23-24

Title: Electrolytic deposition of copper from matte
Creator: Wiard, W. H., Smith, H. C.
Date: 2009, 1909
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/electrolyticdepo00wiar
Thesis (B.S.)--Armour Institute of Technology

Title: SMART GRID COORDINATION OF A CENTRALIZED POWER AND COOLING FOR AN URBAN COMMUNITY
Creator: Franco, Diego Pacheco
Date: 2016, 2016-05
Description: Because the world’s fossil fuel reserves are finite, it is essential to substantially improve the efficiency of all energy consumers. Heating,...
Show moreBecause the world’s fossil fuel reserves are finite, it is essential to substantially improve the efficiency of all energy consumers. Heating, ventilating and air conditioning (HVAC) accounts for 45% of energy consumption in residential buildings. Thus, this project studied and proposed solutions to improve the efficiency of such systems. The project begins with an analysis of a cooling system using electric chillers for a new hypothetical residential community in the Chicago area. Then, two new hybrid configurations were proposed: the utilization of electric and absorption chillers and then this system was augmented with a Thermal Energy Storage (TES) system. A simulation environment based on Matlab/Simulink®, using the concepts of Economic Model Predictive Control (EMPC) was developed to evaluate the performance of these configurations. The main benefits found were the increasing energy efficiency, the environmental impacts reduction and a reduction of more than 70% in operating costs (in some cases, profit was generated).
M.S. in Chemical Engineering, May 2016
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Title: Formation of aluminium nitride
Creator: Rudd, E. B., Veit, L. L.
Date: 2009, 1921
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/formationofalumi00rudd
Thesis (B.S.)--Armour Institute of Technology

Title: THE EFFECT OF NANOPARTICLE SELF-STRUCTURING ON WETTING AND SPREADING OF NANOFLUIDS ON SOLID SURFACES
Creator: Kondiparty, Kirtiprakash
Date: 2011-11, 2011-12
Description: Nanofluids are suspensions of nanometer-sized particles in liquids. The nanoparticles self-structure at the three-phase contact region...
Show moreNanofluids are suspensions of nanometer-sized particles in liquids. The nanoparticles self-structure at the three-phase contact region resulting in the structural disjoining pressure gradient which causes enhanced the spreading of nanofluids compared to simple fluids without nanoparticles. In this thesis, we attempt to understand the effect of the structural disjoining pressure on the spreading dynamics of nanofluids on solid surfaces. We observed nanoparticle self-structuring phenomena during film thinning on a smooth hydrophilic glass surface using a silica-nanoparticle aqueous suspension and reflected light interferometry. Our experiments revealed that film formed from small drop is thicker and contains more particle layers than a film formed from large drop. The data for the film-meniscus contact angle verses film thickness were obtained and used to calculate the structural energy isotherm of an asymmetric film. We studied the effect of structural disjoining pressure on the wedge meniscus profile formed by an oil drop on solid surface surrounded by nanofluid using Laplace Equation augmented with the structural disjoining pressure. Our analyses indicate that a suitable combination of the nanoparticle concentration, nanoparticle size, contact angle, and capillary pressure can result not only in the displacement of the three-phase contact line, but also in the spontaneous spreading of the nanofluid as a film on solid surface. We validated our theoretical predictions using experiments where we observed spreading of nanofluid on glass surface displacing a sessile drop of canola oil. The dynamic spreading of the nanofluid on a solid surface between a sessile oil drop on solid surface was experimentally measured using reflected light microscopy. We xiv obtained the rate of nanofluid spreading by plotting the position of the inner contact line with time. The nanofluid film was found to spread at a constant velocity. We modeled the spreading dynamics of the nanofluid film using the lubrication approximation of the Navier-Stokes Equation, taking into consideration the structural disjoining pressure in the over-all pressure balance. The model was evaluated by estimating the rate of nanofluid spreading for the 10v% nanofluid. The rate of spreading thus predicted by the dynamics model for 10v% nanofluid was in good agreement with the experimental observations.
Ph.D. in Chemical Engineering, December 2011
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Title: Ease of Contamination and Subsequent Sanitation of Food Contact Surfaces Using Salmonella Contaminated Nut Butters
Creator: Kamineni, Prashanthi
Date: 2012-07-23, 2012-07
Description: Salmonella species can survive and or persist for long periods of time in low moisture foods and on food contact surfaces. Understanding...
Show moreSalmonella species can survive and or persist for long periods of time in low moisture foods and on food contact surfaces. Understanding parameters of transfer and survival can provide information required for successful control of this foodborne microorganism. This study investigated the recovery of Salmonella from food contact surfaces (stainless steel, Delrin, polyethylene, polyurethane) as well as their transfer from nut butters onto the contact surfaces. S. Tennessee and S. Oranienburg were grown overnight to stationary phase, harvested and inoculated separately into peanut butter and almond butter. One gram of inoculated nut butter was applied to each of the three separate 4 X 4 cm areas on the materials and stored at room temperature. The nut butters were removed after 1, 7, and 14 day intervals to leave a visually clean surface. Surfaces were swabbed and/or tested with contact plates to determine the population of any remaining cells. Using contaminated peanut butter, highest numbers of S. Tennessee of about 4.27 ± 0.30 per cm2 were recovered from stainless steel surface after 1 day of contact time. Both serovars were recovered at low numbers over time. However, when contaminated almond butter was used, lower recovery was obtained with both serovars. Visually clean surfaces were also treated with various sanitizers to determine efficiency of treatments. Of the three sanitizers, isopropanol proved most effective overall in reducing Salmonella contamination whereas chlorine was least effective. BDD and isopropanol gave best efficiency on stainless steel with a reduction of about 2.5 logs and least on polyurethane surface with a reduction of only about 1 log (p<0.05). Results were similar for both the serovars tested. In general, sanitizers were most effective on stainless steel while polyurethane surface was the most difficult to sanitize. These studies contribute to a better understanding of the behavior of S. Tennessee and S. Oranienburg in nut butters and on food contact surfaces. Estimation of contamination levels may be determined from transfer rates for Salmonella from contaminated to uncontaminated foods and food contact surfaces.
M.S. in Food Safety and Technology, July 2012
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Title: The manufacture of salicylic acid
Creator: Kendall, S. W.
Date: 2009, 1917
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/manufactureofsal00kend
Thesis (B.S.)--Armour Institute of Technology

Title: Manufacture of soaps and the recovery of glycerine
Creator: Polhman, E.f., Martin, H.w.
Date: 2009, 1910
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/manufactureofsoa00polh
Thesis (B.S.)--Armour Institute of Technology

Title: MODELING AND SIMULATION OF DIRECT CARBON FUEL CELL ANODE IN CONNECTION WITH ANALYSIS AND CHARACTERIZATION OF WETTED CARBON ROD IN MOLTEN CARBONATE
Creator: Peng, Feng
Date: 2013, 2013-07
Description: Not available
M.S. in Chemical Engineering, July 2013

Title: Glycerol and spent lye clarification
Creator: Parrot, Raymond D.
Date: 2009, 1915
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/glycerolspentlye00parr
Thesis (B.S.)--Armour Institute of Technology; Bibliography: leaf 39

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