Physical Sciences and Mathematics Commons^™

Selective Removal Of Nox From Catalytic Cracking Regenerator Effluent Using Wet Scrubbing With Aqueous Sodium Chlorite Solutions, Pin Gu

Dissertations

In most refineries, the flue gas from the regenerator in the fluid catalytic cracking (FCC) unit represents a key source of NOx, SOx, particulate, and CO emissions. Wet scrubbing systems have been used with great success to control particulate and SOx emissions from typical FCC regenerator flue gas. Development of relatively inexpensive and safe additives that can be used in existing scrubbing systems to oxidize and absorb NOx is important in order to increase the industrial options to meet the provisions of the Clean Air Act and recently proposed EPA rules. This paper explores the feasibility of removing NOx from …

Fresh Kills Dumped : A Policy Assessment For The Management Of New York City's Residential Solid Waste In The Twenty-First Century, Aaron William Comrov

Theses

New York City ceased disposing of its daily residential solid waste output within its municipal borders in March 2001 when the Department of Sanitation completed its phase-down of the Fresh Kills landfill on Staten Island. The closure of this facility has, for the first time in history, stripped New York City of its waste management selfsufficiency, created a situation in which municipal officials are reliant on private firms and other governmental jurisdictions for disposal services, and contributed to deteriorating fiscal, environmental, political, economic, social and practical conditions.

Consequent and concurrent to this predicament, a multitude of alternative policies have been …

The Rationale For Preserving Neighborhood Open Space In Newark, New Jersey's North Ward, Stephen M. Wiessner

Theses

A study was conducted to determine the shifts in open space availability between 1950 and 2003 in four neighborhoods in the North Ward of Newark, New Jersey. Total open space in square feet and open spaces ten thousand square feet and less were quantified to determine the extent of usable open space for the creation of community gardens or vest pocket parks.

The study identified large reductions of open space recently in the two least affluent study areas. The two more affluent study areas have also lost open space recently, but not at the magnitude of the poorer study areas. …

Experimental And Modeling Studies Of Formation Of Products Of Incomplete Combustion And Chlorocarbon Incineration, Roman Brukh

Dissertations

The two-stage combustor facility was used to investigate the process of chlorocarbon incineration and formation of products of incomplete combustion. For this purpose methylene chloride was used as a chlorine-containing compound. The propose of this research was to obtain a better understanding of the incineration process of chlorocarbons, such as methylene chloride, especially regarding its destruction efficiency and formation of products of incomplete combustion. For measuring near-real time very low concentrations of benzene and methylene chloride, on-line microtrap gas chromatography system was used.

The experimental system was validated using a known combustion reaction mechanism from literature. Modeling of combustion process …

Thermochemistry And Kinetics In Pyrolysis And Oxidation Of Oxygenated Chlorocarbons And Chlorinated Aromatics, Li Zhu

Dissertations

Thermochemical. properties, Δf_H°₂₉₈, S°₂₉₈, and Cp°(T) (5<=T/K<=6000), are determined using different ab inifio and density functional theory methods for three chloromethyl radicals, CH₂Cl, CHCl₂, CCl₃, all chlorobenzenes from monochlorobenzene to hexachlorobenzene, and all chlorophenols from ortho-, meta-, para-chlorophenol to pentachlorophenol. The B3LYP/6-31G(d,p) method is used in the structure optimization. The B3LYP/6-31G(3df,2p), QCISD(T)/6-3 I G(d,p), and CB S-Q methods are used in single point calculations of total electronic energies. Harmonic vibration frequencies are scaled for zero point energies and thermal corrections. Isodesmic reaction(s) are utilized at each calculation level to determine Δf_H°₂₉₈ of each species. Contributions to S°₂₉₈ and Cp°(T) from …

Reconsidering Restoration, Brian Hoffner

Theses

What does the process of ecological restoration actually produce? For some restoring nature is a point of no contention. By replacing ecosystems that have been damaged by human interference, humans are taking proper responsibility for their actions. However, the environmental ethics community is all but in agreement over humans' obligations to damaged ecosystems. Some in the field claim that it is human's responsibility to perform "wild gardening", through restorations, to "our" environments. While other philosophers insist that these acts produce "faked nature".

This thesis offers a compromise vision of the meaning of restoration. The author uses the concept of Autonomous …