Browsing by Subject "Engineering, Environmental."
Now showing items 1-20 of 39
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Air quality cumulative effects assessment for United States Air Force bases.
(1998)An air quality CE significance rating procedure was developed through adaptation of existing EIA significance evaluation methods combined with expert opinion and professional judgment. The procedure includes 18 factors for ... -
Assessing the influence of physical and chemical properties of sediments on microbial distribution and activity in the terrestrial subsurface.
(2005)To maximize the possibility for success, accurate assessment of the distribution and activity of microorganisms in the subsurface is essential for implementing bioremediation strategies at contaminated sites. It is clear ... -
Bacillus lipopeptide biosurfactants: Purification, structure-activity relationship, and in-situ production in oil reservoirs.
(2006)Alternatively, biosurfactant activity can be manipulated by formulation of biosurfactant mixtures with different properties. The efficacy of biosurfactants from individual strains, and mixtures of biosurfactants from ... -
Catalytic cracking of poly(ethylene) and poly(styrene) by silica-alumina, HZSM-5 zeolite and sulfated zirconia.
(1997)The catalytic cracking mechanisms of poly(ethylene) and poly(styrene) differ considerably from their thermal cracking mechanisms. In the case of poly(ethylene), thermal cracking leads to the formation of a wide range of ... -
A coupled model for the prediction of interformation flow through an abandoned well.
(1998)Application of the model is demonstrated in a computer program which is used to evaluate hypothetical field cases of varying producer/injector combinations and user defined abandoned well location and conditions. The results ... -
Coupled modeling of the air quality impacts of chemical depainting agents released from an industrial wastewater treatment facility.
(2001)Coupling of an appropriate source emissions model and an atmospheric dispersion model represents a cost-effective and environmentally-responsible approach for meeting impact prediction and regulatory reporting requirements, ... -
Designing and Characterizing Surfactant Formulations for Detergency of Oily and Solid Non-Particulate Soils
(2020)Laundry detergency is a complex process at the nexus of soil, surfactant, solid substrate, and wash condition. This dissertation contains the following two major topics. The first topic focused on developing surfactant ... -
Determination of leakage from subsurface containment systems using informational entropy and hydraulic signature assessment methods.
(1998)The use of physical and hydraulic containment systems for the isolation of contaminated ground water and aquifer materials associated with hazardous waste sites has increased during the last decade. The existing methodologies ... -
Development of ecological engineering solutions to mine water biogeochemistry and hydrology challenges
(2022-05)Abandoned underground mines can cause a variety of environmental problems, including mine drainage (MD) that negatively impacts thousands of kilometers of streams worldwide. Underground mines accumulate water after pumping ... -
A dual-porosity model for two-phase flow in deforming porous media.
(1999)In this dissertation, an approach, which is based on the dual-porosity concept and takes into account rock deformations, is presented to derive rigorously a set of coupled differential equations governing the behavior of ... -
Effects of pH, inorganic anions, and surfactants on the photocatalytic degradation of aqueous ammonia in graywater.
(2007)Key words: Aqueous ammonia, Titanium dioxide, pH, Inorganic anions, Surfactants, Hydroxyl radicals, Graywater -
Estimating Wave Reduction by Floating-Wetland Breakwaters Using Small-Scale Physical Models
(2020)Wind-induced waves can cause significant erosion on lake shorelines. One solution to this problem is to absorb the waves before they reach the shoreline. Floating breakwaters have been used to reduce waves, but provide ... -
Experimental and numerical simulation study of microbial enhanced oil recovery using bio-surfactants.
(2005)A 2-phase, 10-component microbial enhanced oil recovery numerical simulator was modified to include reservoir salinity and facilitate surfactant and polymer injection. The effects of reservoir brine salinity and divalent ... -
Expert system for evaluation of nutrient pollution potential in groundwater from land application of manure.
(2004)In recent years, groundwater contamination from animal husbandries has become a growing concern for the regulatory agencies and farmers. The animal husbandries usually dispose off the manure produced in the facility to the ... -
FORMULATIONS AND CHARACTERISTICS OF VEGETABLE OIL-BASED MICROEMULSION BIOFUELS
(2014-05-09)Biofuels have been increasingly explored as alternative renewable fuel sources due to the growing global energy demand, petroleum-based fuel depletion, and the negative effects of global exhaust emissions from fossil fuels. ... -
Hysteresis and dynamic effects in the relationship between capillary pressure, saturation, and air-water interfacial area in porous media.
(2006)Air-water interfacial areas (A) were measured for multiple drainages (primary, secondary, and scanning) using a newly developed method, along hysteretic Pc-S curves representing natural drying/wetting processes. The ... -
Impact of physiological state and macro-nutrient ratio on microbial surface thermodynamics and transport.
(2002)As both deposition and retardation occur during bacterial transport, the deposition coefficient and retardation factor have been widely used individually in describing the transport of bacteria through porous media. Rijnaarts ... -
In-situ analysis of volatiles obtained by catalytic cracking of polyethylene with HZSM-5, HY, and HMCM-41 /
(2002)When polymer/catalyst samples are heated in hydrogen, the extent of hydrogenation is reflected by reduced residue content and variations in Ea versus temperature curves. The addition of platinum increases volatile aromatic ... -
Interpretation of horizontal well performance in multi-layer reservoirs by the boundary element method.
(1998)The developed algorithm is applied to generate the dimensionless pressure and the dimensionless pressure derivative for a horizontal well in eight different systems whose analytical solutions are not available. These cases ... -
Introduction to Process Simulation with Aspen Plus: Instructor's Guide
(2024-06)Process simulation entails the representation of a chemical process by using mathematical equations. Process simulation in Aspen Plus offers the advantages of optimizing plant performance, reducing operational costs, and ...