Physical Sciences and Mathematics Commons^™

Assessing The Effectiveness Of Integrated Multi-Trophic Aquaculture For Growing West Coast Venus Clams, Avery Wallace

Theses

With demand for sustainable sources of seafood on the rise, California is looking to expand aquaculture with a focus on innovative culturing methods and use of native or resident species. Therefore, this study examined the potential for culturing native North American west coast venus clams (Chione californiensis and Chione undatella) using integrated multi-trophic aquaculture (IMTA). An ITMA approach was chosen because it is a culture method that uses species from different but functionally complementary trophic levels that have been found to reduce the potential negative effects of traditional monoculture. California sea cucumber (Parastichopus californicus) and the seaweeds red ogo (Gracilaria …

The Ecological Impacts Of Climate Change In Hot Regions – Are Hawksbill Turtles Living Above Their Optimum Temperature In The Uae?, Obaid Ali Alshamsi

Theses

It is getting warmer throughout the world but it is not getting warmer by the same amount in all regions, leading to speculations that the biggest impact will be the impact on species living in the hot regions is widely assumed to be slight in comparison to the temperate and higher latitude regions. Temperature changes in hot regions are smaller, but it may be that the species in those regions have reached their optimum temperatures. In which case the effects of even a small temperature increase could be steeply negative. To test this thoroughly in terms of demographic parameters I …

Passive Cooling In Non-Residential Nearly Zero Energy Buildings: A Thermal Comfort Analysis Based On Measurement, Modelling And Simulation, Adam O'Donovan

Theses

Overheating in non-residential nearly zero energy buildings (nZEBs) presents a major risk to the well-being, productivity and thermal satisfaction of the people who occupy them. As global temperatures are expected to increase in the future, the overheating risk and cooling demand is also expected to increase. Therefore, low cost and low energy solutions that are able to maintain thermally comfortable conditions without the need for mechanical systems will be vital in decarbonising the building stock and ensuring that buildings are comfortable and remain low carbon now and in the future. Passive cooling has long been championed as a low cost …

Development Of A Dynamic Cfd Model For Offshore Oscillating Water Columns With Non-Linear Interactions, Ken O'Connell

Theses

This thesis focuses on the development of a state of the art modelling technique for offshore Oscillating Water Column (OWC) type Wave Energy Converters (WEC) using Computational Fluid Dynamics (CFD). Current literature indicates a limited amount of work has been completed on studying these devices containing non-linear time dependent flow phenomenon. Initially, a 2D Numerical Wave Tank (NWT) is studied to reduce discretisation error in order to reproduce accurately propagating waves. Further development into a 3D domain permits the geometrical requirements of an OWC type spar buoy to be included.

In parallel, a single Degree of Freedom (DOF) model is …

Exploration And Implementation Of Innovative Efficiencies/Devices In Beet Processing For Energy Production, Patrick Mcinerney

Theses

The imminent depletion of fossil fuels, as well as concerns for energy security and the obligation to respond to climate change has led to expanding worldwide popularity of Anaerobic Digestion (AD) of energy crops. Sugar beet is a popular AD feedstock due to its favourable characteristics; however it can be quite labour intensive requiring a range of specialist equipment to process the crop prior to undergoing AD. A crucial stage of this process involves the size reduction of beet by a mechanical chopper unit; this pretreatment breaks open the cellulose structure of the crop and increases the surface area available …

The Winds Of Change: The Political Ecology Of Renewable Energy Transition In Vermont, Jill Mcnulty Clegg

Theses

This research presents a case study of renewable energy transition (RET) in Vermont, illustrated by a recently completed commercial wind project in the Lowell Mountains. Preliminary analysis maps out the current political landscape of Vermont’s RET – its stakeholders, political climate, and important policy advances. Subsequent analysis focuses on the relationship between RET and the unique aspects of Vermont’s institutions, culture, and communities. Important elements of this analysis include the ways that community groups form a vital link between citizens and the State, the unique opportunities and challenges presented by Vermont’s pastoral land perception and activist heritage, and the way …

Innovations In State-Level Solar Energy Policy : Motivating Community Investment In Resiliency, Sarah Katheryn Gentile

Theses

Community-level resilience in the face of climate change is critical for New Jersey. Through a review of current literature, evidence is provided that a majority of work being done with respect to climate-change planning is taking place at the local level. On the basis of case-study analyses, three community renewable energy projects are examined as well as two policy tools that are helping to facilitate development of local capacity to generate renewable energy. The best elements of these initiatives are extracted and form the basis of a policy discussion intended to encourage local level generation of renewable energy, thereby increasing …

Achieving ‘Net Zero Energy’ Performance Through Retrofitting Of Residential Buildings In Ireland., M. Alan Costello

Theses

A Net Zero Energy Building (nZEB) is a residential or commercial building that consumes net zero energy over a set period of time, usually taken as one year. In short, for every unit of energy the building consumes over a year, it must generate a unit of energy to maintain an overall net balance. This is achieved by reducing the operational energy usage to a very low level through energy efficient design, and then providing renewable generation technologies on site to cater for the remaining energy demand.

Energy use in all sectors of society is under scrutiny at present, largely …

Evaluating The Effectiveness Of Design For The Environment Tools To Help Meet Sustainability And Design Goals, Ana Maria Leal-Yepes

Theses

Environmental impacts of electronics are a growing concern because the amount and type of materials used in production of the devices, the impacts to the environment from discarded

electronics and the early retirement of products due to rapidly evolving devices, changing design trends, and perceived technological obsolescence. Design for the Environment is a sustainability strategy that aims to reduce the environmental impacts through techniques that enable sustainability solutions during the design decision-making process. In order to suit the diverse

needs of sustainable design practitioners, there has been a large number of tools for Design for the Environment (DfE) developed, confusing …

New Economy : Assessment Of The Institutionalization Of An Emerging Paradigm And Academic Field Through Inquiry Into Prominent Boundary Organizations, Jeanine Cava Rodgers

Theses

It is increasingly acknowledged that in order to reach global and regional sustai nabi l ity goals, economic growth and consumption levels in wealthy developed nations will need to stabilize or reverse. Organizations and projects of a wide variety have emerged and expanded to take on this challenge, and shape the so-called, "new economy". The purpose of this research is to gain a clearer picture of the impacts of efforts to develop a shared new-economy knowledge framework on the broader sustai nabi l ity conversation, and to assess the intellectual institutionalization of same. This thesis focuses in on the influence …

Investigation Of Wastewater Treatment Plant Sustainability Potential In Terms Of Resource Recovery Essentials, Aoife Moloney

Theses

This thesis aims to explore the sustainability potential which exists in Wastewater Treatment Plants (WWTP's); particularly focusing on nutrient, energy, and water recovery and reuse. The core of the research will focus on the establishment of a sustainable Resource Recovery Treatment Plant (RRTP) plan for Limerick Main Drainage (LMD) WWTP, and potentially utilising this as a case study plant which could act as a foundation example within the sector.

There is a genuine need to investigate more sustainable options in wastewater treatment (WWT); increasing energy and sludge management costs are a real issue for non-sustainable WWTP's given that thousands of …

Evaluating The Irish Technical Guidance Documents In The Context Of Sustainability, Rosemarie Macsweeney

Theses

Sustainability is more than just a “buzz word” or meaningless jargon; it is what is needed for survival due to the unsustainability of humanity in recent centuries. Sustainable buildings are only one element of the solution, but a very large one in terms of the amount of problems created socially, economically and environmentally by buildings. Humans now spend more and more time in buildings, most of their days in many cases, and so the regulation and policy mechanisms surrounding buildings are critical to the success of sustainability. The Irish Technical Guidance Documents (TGDs), are a set of twelve documents which …

The Effects Of Climate On The Growth Of Winter Wheat And Spring Barley In An Irish Context, Adrian Kennedy

Theses

The climate of earth is always changing due to natural events, however it is thought that the rapid warming period currently taking place is primarily due human activity to (environmental protection agency 2012). Climate change is altering the environment and this will have consequences for agriculture (Teagasc publications 2012). In this study we examine the relationship between weather and the yield of winter wheat and spring barley in an Irish context using data gathered from 2004-2010 at the Teagasc Oak Park research centre in Carlow. The data was analysed using a mixed effect model to test which if any weather …

Design Of A Centralised Anaerobic Digestion Plant In Ireland., Diarmuid O'Meara

Theses

Climate change is brought about by greenhouse gases emitted to the earth’s atmosphere by fossil fuels. Renewable energy sources are seen as an alternative to fossil fuels. Examples of renewable energy sources are biofuels which are a method of reducing the emission of greenhouse gases. One form of biofuels is biogas that is produced during the anaerobic digestion process. In this thesis pig slurry is used to produce biogas.

In this project, the optimum design process for a centralised anaerobic digestion plant was established in the literature review, The optimum process for anaerobic digestion plant design in Ireland was investigated. …

The Role And Significance Placed On Corporate Social Responsibility In The Hotel Industry In The South West Region Of Ireland., Shirley Millar

Theses

This research sets out to examine the concept of Corporate Social Responsibility in the context of the hotel industry, with a specific focus on Ireland and the South West Region. The study looked at the level of importance placed on CSR by both the hotel consumer and the hotel industry. The study also sought to determine the relevance of CSR as a source of competitive advantage

Interest in the practice of Corporate Social Responsibility (CSR) has become increasingly prominent in recent years. There has been a shift in practice from companies doing good to be seen to be doing good, …

The Potential For Gaseous Biofuels In Ireland, Darren Kenneally

Theses

According to the EU Renewables Directive 2009/28/EC, 20% of the energy across Europe needs to be renewable by 2020. This is inclusive of the energy utilised in the transport sector where 10% of this energy needs to be renewable. In order for Ireland to meet the targets set in the Renewables Directive various changes need to be applied. The utilisation of gaseous biofuels produced from the anaerobic digestion of various feedstocks will aid Ireland in meeting this directive.

In this study biodegradable municipal waste (BMW) and energy crops are analysed as potential feedstocks for the production of biomethane. This biomethane …

Sustainable Site Remediation : A Life Cycle Assessment Approach, Harnoor Dhaliwal

Theses

Remediation of contaminated areas is often a resource-intensive activity that itself can create environmental burdens. Life cycle assessment (LCA) was used as a tool to examine the environmental impacts associated with remediation activities. A hypothetical contaminated site with five remediation alternatives was developed for this analysis. The results of Life cycle Impact Assessment (LCIA) indicated that greater site activity in terms of transportation, material and equipment use translated into higher environmental impacts.

A sensitivity analysis was performed to evaluate the environmental impacts further in different time horizons. The results showed that choice of time horizon can have a significant effect …

Treatment Of Industrial Wastewater Containing Active Pharmaceutical Ingredients With A Membrane Bioreactor, With The Aim Of Reducing Resource Consumption, Pádraig Colm Ó'Maolcatha

Theses

The biodegradation of a selected active pharmaceutical ingredient (API) during wastewater treatment in a membrane bioreactor (MBR) was examined experimentally. A comparison study was conducted by operating a conventional activated sludge (CAS) pilot plant in parallel to the MBR. The MBR was operated under varying conditions of pH (pH6 and pH8), MLSS (6g/L and l0g/L) and SRT (20 days and 30 days) according to a full factorial design of experiments. In the CAS, pH and SRT were altered as above but MLSS was maintained at 3-4g/L. Comparable average API removal results of 95.5% and 95.7% were obtained for the MBR …

The Potential For Biomass In Ireland., Sarah J. Corcoran

Theses

It is not an understatement to say that a global crisis is approaching and at an alarming pace. It is a widely accepted fact that within the next few years, a change is going to take place. The sources we currently rely on to power our economies are already in an alarmingly depleted state, there is a necessity to find a new source or sources of energy. In addition to this, the global consequences of our past actions on the environment are also coming to the front, with climate change and ozone depletion making international headlines on an almost daily …

The Potential For Ch4-Enriched Biogas As A Transport Fuel In Ireland, Niamh Power

Theses

Ireland needs a biofuel industry- to aid compliance with the Kyoto Protocol, the Biofuels Directive and to secure its energ>' supply. The overall aim of this work is to assess the potential of CH4-enriched biogas as a transport fuel in Ireland. Biogas is produced during the anaerobic digestion of biomass. This work investigates biogas production from two different feedstocks; biodegradable municipal waste and agricultural crops. To assess the potential for biogas as a transport fuel the alternatives to biogas are investigated and compared. Thus digestion and composting of biodegradable municipal waste, and biogas and ethanol production from agricultural crops …

Anaerobic Digestion: Decision Support Software, Marco Poliafico

Theses

Ireland has significant quantities of livestock; meat exportation is a vibrant sector of the economy. Environmental management of animal wastes has therefore become an important concern. On the other hand in the last decade, national and EU policy debate has highlighted the need to investigate alternative energy: in particular energy for transport.

This study investigates the quantities of animal wastes produced in Ireland and their potential treatment using Anaerobic Digestion technologies. In 2005 Ireland had over 8 millions animals (cattle and pigs) and the annual slaughter accounted for over 4.2 million of these creatures. These animals have been responsible for …

Environmental Policy In Jordan : Analysis, Gap Identification, And Strategies For Improvement, Diana Saed

Theses

Jordan is a country with a tremendously fragile environment. It faces substantial environmental challenges due to its delicate environmental resources and its limited financial assets. These challenges are aggravated by the scarcity of available water, deterioration of the water resources, land contamination, desertification, mismanagement of land use, and air pollution. Attempting to describe the “State of the Environment” and to provide an informed analysis of the threats to the nation’s environment is a Herculean task. This analysis examines the efforts made by Jordan in regard to protection and management of the environment. This thesis provides a snapshot of the major …

Zero Effluent Stretch Target (Zest), Orla O'Connor

Theses

The goals of this project were to assess the viability of avoiding water use and of “cascading” water uses, i.e. using outlet water from one process in another activity, possibly with some purification, including the upgrading of the final effluent stream for internal reuse. Water use has been inventoried at FMC Biopolymer, Cork. Avoidance and reduction measures were identified that could reduce water consumption from 49m /hr to 19 m /hr (a reduction in excess of 60%), with an annual saving in excess of €350,000. These projects were assessed for feasibility and implementation. Potential streams that could be subject to …

Short-Term Effects Of Bulkheads On The Bayshore Of Fire Island, New York, Dipanjali Chavan

Theses

Construction of bulkheads as a method of shore protection is common on the bay shoreline of Fire Island, New York but there are few studies that assess the effects of these structures on beach change in estuarine and lagoon environments. A short-term field study was conducted at Cherry Grove on Fire Island to assess the effect of a bulkhead on the fronting profile and to the adjacent beaches on the east side of the bulkhead. Data on winds, waves, and currents were gathered daily at high water. Data on profile change and depth of sediment activation were gathered at low …

The Role Of University Participation In Integrated Coastal Zone Management : A Case Study Of The Ria De Aviero, Amie Barbosa Figueiredo

Theses

The purpose of this investigation is to examine the efforts of the Universidade de Aveiro to create a public participation process and provide information for the management of the Ria de Aveiro, a lagoon system, in Portugal. This thesis examines whether universities are effective as coordinators and facilitators of Integrated Coastal Zone Management (ICZM). The Universidade de Aveiro, through the European Union-ICZM Demonstration Programme, spearheaded two projects, MARIA and ESGIRA-Maria, in efforts towards moving forward with ICZM in the area. A framework was created and then applied through a series of pilot-projects. Examination of the results of these pilot projects …

The Rise And Fall Of Open Market Emissions Trading In New Jersey, Devin Peter Demarco

Theses

On August 2, 1996, the New Jersey Department of Environmental Protection (NJDEP) promulgated rules governing its Open Market Emissions Trading (OMET) program. With a goal to provide industry with a greater degree of flexibility in meeting federal air compliance directives and simultaneously move the state towards the attainment of National Ambient Air Quality Standards (NAAQS), this program is now slated for termination following scrutiny from the federal Environmental Protection Agency (EPA), environmental groups and a new NJDEP administration.

This thesis discusses the basis for this scrutiny and other program flaws discovered through interviews with, and public comments from, NJDEP and …

Incineration And Environmental Justice : The Case Of Communities Around Connecticut Resource Recovery Facilities, Michael A. Bilheimer

Theses

The current depleting landfill capacity in Connecticut means that resource recovery facilities will be relied on heavily to meet the States' waste disposal needs. This heavy reliance on these facilities will place greater burdens on the host communities of these waste facilities. Therefore it is important to examine the citing of these facilities to determine if these sitings unfairly targeted a particular segment of the population.

To determine if siting has been unjust in Connecticut, this study uses a geographic information system (GIS) to analyze demographic data surrounding each facility in a comparison of demographic data from 1990 and 2000 …

A Proposal To Meet The Biofuels Directive In Ireland, Karl Mccarthy

Theses

In 1990 the transport sector accounted for 9,5% of all Irish emissions. By 2010 it is predicted that transport emissions will have increased by 179%, accounting for 18.8% of all emissions. It is predicted that transport emissions will therefore be around 14,000 kt in 2010. This equates to around €370 million pa in carbon taxes if and when the taxation regime is introduced. This €370 million may be used to facilitate a biofuel industry (for example, by reducing excise duty on biofuels).

The proposed carbon tax along with the EU Biofuels Directive aims to encourage the use of renewable transport …

Optimisation Of Heat Transfer And Fluid Flow In The Cooling Of Building Integrated Photovoltaic Facades., Eoin Patrick Hodge

Theses

The aim of this research was to explore the effects of mature and developing technologies from aeronautical industries such as impingement and film cooling, and electronic cooling techniques, in the setting up of different laminar and turbulent flow regimes on PV cooling duct heat transfer rates, with air flow as that brought about with natural buoyancy effects in a vertical building facade. The problem of efficiency losses in PV panels, due to overheating, is one of the factors restricting the development and use of this renewable power source. PV panels can experience very high temperatures, due to the heat input …

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 …