Civil and Environmental Engineering Commons^™

The Effect Of Edge-Of-Field Nutrient Management Practices On Microbial Concentrations In Subsurface Drainage Water And The Associated Risk Of Antibiotic Resistance Dissemination, Sara Mardani

Electronic Theses and Dissertations

Many in-field and edge-of-field management practices have been used to reduce nutrient loads from agricultural fields. The denitrification woodchip bioreactor (WB) is one edgeof- field management practice that has proven to be effective in removing nitrate from subsurface drainage water. The success in nitrate removal achieved with WBs has raised interest in expanding their capabilities for removing other agricultural pollutants, including phosphorus, by using other types of media like phosphorus-sorbing filters or combining these filters with woodchips to remove both nitrate and phosphorus as dual-nutrient removal systems. Despite the extensive research done on WBs and nutrient filter materials, little consideration …

Designing Bifunctional Materials For In-Situ Capture And Conversion Of Volatile Organic Compounds, Anirudh Krishnamurthy

Doctoral Dissertations

”Volatile organic compounds (VOCs) are a class of organic liquid compounds with low vapor pressures, which enables them to vaporize at ambient conditions. VOCs are largely toxic, carcinogenic, and mutagenic, and have profound adverse effects on human health and the ecological environment. Many VOCs cause ruinous health effects even at very low concentrations (ppm) and therefore control of these organic compounds is essential for ensuring good air quality. A large portion of VOCs cause catastrophic health effects such as cancer or liver damage even at very low concentrations (ppm), and the control of these compounds is vital in ensuring good …

Use Of Wicking Geotextile To Dehydrate Road Embankments, Chuang Lin

Doctoral Dissertations

“Excess water within a pavement structure is the major cause of pavement deteriorations. A roadway is often constructed with soils compacted at the optimum water contents to achieve the best performance. After construction, the soil water content variation is controlled by the ambient environment. The base course aggregate is very sensitive to water content variations. Unfortunately, conventional drainage system can only drain gravity water, but not capillary water, and it cannot work under unsaturated conditions. Consequently, no matter how well the road is constructed, the water content is expected to increase with time and the excess water will inevitably accelerate …

Dynamic Impact Induced By Tornadoes Through Simulations Based On Two-Way Wind-Structure Interactions, Tiantian Li

Doctoral Dissertations

"Tornadoes have become a significant cause of property damage, injuries and life losses. Investigations of tornadoes indicate that most fatalities were caused by building failure. For example, in the Joplin, MO tornado of 22 May 2011, 161 people were killed, and 84% fatalities were related to building failure. Therefore, it is imperative to develop science-based tornado-resistant building codes, in order to provide a better level of occupant protection from tornadoes and to minimize the tornado-induced damage. This requires in-depth understanding of the wind characteristics of tornadoes and their wind effects on civil structures, based on which design tornadic wind loading …

Long Period Fiber Grating, Thin Coating Of Graphene And Silver Nanowires, And Corrosion Sensing For Life-Cycle Assessment Of Steel Structures, Chuanrui Guo

Doctoral Dissertations

"This study aims to develop and validate a compact, integrated lab-on-sensor system for simultaneous measurement of strain, temperature and corrosion-induced mass loss in steel structures and concrete reinforcement elements in order to assess their life-cycle performance. The sensing system operates based on the principle of long period fiber gratings (LPFG) that are responsive to both thermal and mechanical deformation, and the change in refractive index of any medium surrounding the optical fiber. To fabricate a LPFG sensor for strain and temperature measurement, a CO₂ laser aided fiber grating system was assembled. To enable mass loss measurement, a low pressure …

Changes In Fresh Properties Of Flowable Concrete Induced By Pumping And Composition Of The Lubrication Layer, Alexis Salinas

Masters Theses

"Pumping is an easy method to move concrete while keeping stability. It is worldwide accepted as one of the principal methods for concrete placement, as it accelerates construction. Typically, concrete acceptance in terms of fresh quantitative empirical properties (i.e. slump/slump flow and air content) are performed prior to the pumping process. However, empirical measurements have the drawback that they only measure 1 point. Rheology is better tool to evaluate the behavior of concrete. Pumping is a process that induces considerable shearing in the concrete that can impact its rheological properties. Therefore, the magnitude of these changes in fresh properties depends …

Influence Of Pumping Parameters On The Freeze-Thaw And Scaling Resistance Of Highly Workable Concrete, Alexandra Nicole Wehar

Masters Theses

“Over the past 60 years, pumping concrete has gained popularity due to the economic and technical benefits that typically accompanies it. However, boom configuration and flow rate can adversely affect freeze-thaw and scaling resistance of concrete due to the effects of pressure on the air-void system. Therefore, the objective of this research is to assess the influence of different pumping parameters on the durability of hardened self-consolidating concrete. Self-consolidating, flowable, and conventional concrete mixtures were tested during large scale pumping experiments positioning the pump boom in an “A” and a flat shape as well as using different pumping speeds. In …

Retaining Wall System With Soldier Pile And Composite Resin Infused Lagging Elements, Shane Phillip Moore

Graduate Theses, Dissertations, and Problem Reports (ETD)

Retaining walls are used as an alternative to installing drainage and soil reinforcement, depending on site conditions. This report discusses the design of a retaining wall with steel soldier piles and lagging elements for rocky slopes. The design consists of six different options, three options with a span of eight feet and three options with a span of ten feet between soldier piles. The three options for both spans are the same concept but designed for different load conditions. These options include: timber with glass fiber reinforced polymers (GFRP) wraps, reinforced concrete with GFRP wraps, and an FRP Prodeck system …

Perceptions Of Vulnerability To Flooding, Hurricanes, And Climate Change On Grand Isle, Louisiana’S Only Inhabited Barrier Island, Lauren Miller

Graduate Student Theses, Dissertations, & Professional Papers

This study used in-depth interviews of permanent residents on Grand Isle, Louisiana, a remote barrier island, to better understand their perceptions of structural flood measures, non-structural responses to flooding and hurricanes, and perceptions of vulnerability to flooding, hurricanes, and climate change on a remote barrier island-Grand Isle, Louisiana. Residents' perceptions regarding the various structural measures implemented by the federal, state, and local government appeared mixed. Non-structural responses to flooding risks implemented at the household, community, state, and federal level continue to strengthen resiliency on Grand Isle. According to interviewees, aspects of environmental, rural, and economic vulnerability on Grand Isle impact …

A Bridge Rehabilitation Strategy Based On The Analysis Of A Dataset Of Bridge Inspections In Co. Cork, Liam Dromey

Masters

Ageing highway structures present a challenge throughout the developed world. The introduction of bridge management systems (BMS) allows bridge owners to assess the condition of their bridge stock and formulate bridge rehabilitation strategies under the constraints of limited budgets and resources. This research presents a decision-support system for bridge owners in the selection of the best strategy for bridge rehabilitation on a highway network. The basis of the research is an available dataset of 1,367 bridge inspection records for County Cork that has been prepared to the Eirspan BMS inspection standard and which includes bridge structure condition ratings and rehabilitation …

Microemulsion Based Soil Remediation Using Mixed Anionic And Extended Nonionic Surfactant, Virin Kittithammavong

Chulalongkorn University Theses and Dissertations (Chula ETD)

The anionic-nonionic mixed system has a synergistic effect on the microemulsion formation by a reduction of interfacial tension. The challenge of the mixed surfactant based on soil remediation is how to find the appropriate condition. This study aims to investigate the phase behaviors of the anionic-nonionic mixed systems and to formulate their hydrophilic-lipophilic deviation (HLD) equations. Then the mixed surfactant solutions are applied to determine the oil removal efficiency. The conventional anionic surfactants (i.e., sodium dodecyl sulfate (SDS), sodium dihexyl sulfosuccinate (SDHS), and sodium dioctyl sulfosuccinate (AOT)) and the extended nonionic surfactants (i.e., alcohol ethoxylate series (AE(EOn) and alkyl polyglycol …

ทางเลือกการใช้ประโยชน์ก๊าซคาร์บอนไดออกไซด์เหลือทิ้ง กรณีศึกษาโรงงานอุตสาหกรรมปิโตรเคมี, ปิยวรรณ ศรทอง

Chulalongkorn University Theses and Dissertations (Chula ETD)

งานวิจัยมีวัตถุประสงค์เพื่อศึกษาแนวทางการใช้ประโยชน์ก๊าซคาร์บอนไดออกไซด์เหลือทิ้งจากโรงงานอุตสาหกรรมปิโตรเคมีตามหลักการเศรษฐกิจหมุนเวียน โดยทาการศึกษากระบวนการผลิตเอทิลีนออกไซด์ (Ethylene Oxide) ในส่วนของผลิตภัณฑ์โมโนเอทาโนลามีน (Monoethanolamine, MEA) และโมโนเอทิลีนไกลคอล (Monoethylene Glycol, MEG) และการจัดการก๊าซคาร์บอนไดออกไซด์ที่เกิดชึ้นจากกระบวนการผลิตในปัจจุบัน โดยพบว่าโรงงานมีการนำก๊าซคาร์บอนไดออกไซด์ที่เกิดขึ้นจากกระบวนการผลิตเอทิลีนออกไซด์ไปใช้ประโยชน์แล้ว แต่พบว่ายังมีบางส่วนที่ยังไม่ได้นำไปใช้ประโยชน์ ซึ่งจัดการโดยการปล่อยออกสู่บรรยากาศ แนวทางการนำก๊าซคาร์บอนไดออกไซด์ที่ดักจับได้ไปใช้ประโยชน์ (Carbon Dioxide Utilization) ระดับเชิงพาณิชย์ (Commercial scale) ในงานวิจัยนี้มีหลายวิธีได้แก่กระบวนการผลิตยูเรีย (urea) การสังเคราะห์กรดซาลิไซลิก (salicylic acids) กระบวนการผลิตเชื้อเพลิงชีวภาพ (biofuel) การสังเคราะห์โพลีออล (Polyol) และการนำก๊าซคาร์บอนไดออกไซด์มาสังเคราะห์เมทานอล (Renewable methanol) โดยนอกจากจะเป็นวิธีที่ลดปริมาณก๊าซคาร์บอนไดออกไซด์ในชั้นบรรยากาศแล้วยังเป็นการนำก๊าซคาร์บอนไดออกไซด์มาแปรรูป “สร้างมูลค่าเพิ่ม” หารายได้และสร้างเป็นธุรกิจใหม่ได้ จากนั้นทำการประเมินก๊าซเรือนกระจกที่ลดลงได้จากการใช้เทคโนโลยีทั้ง 3 ได้แก่ กระบวนการผลิตยูเรีย สังเคราะห์เมทานอลจากก๊าซคาร์บอนไดออกไซด์ และการใช้ก๊าซคาร์บอนไดออกไซด์เป็นองค์ประกอบเสริมที่เรียกว่า โพลิออล โดยทั้ง 3 เทคโนโลยีสามารถลดการปล่อยก๊าซคาร์บอนไดออกไซด์ที่จะปล่อยออกสู่บรรยากาศได้ ซึ่งเป็นแนวทางในการนำก๊าซคาร์บอนไดออกไซด์ไปใช้ประโยชน์ที่มีอยู่ในปัจจุบันและมีความน่าสนใจ แต่อย่างไรก็ตามควรวิเคราะห์ความคุ้มค่าทางเศรษฐศาสตร์และผลกระทบต่อสิ่งแวดล้อมในอนาคตเพิ่มเติมด้วย

การลดก๊าซเรือนกระจกจากการอนุรักษ์พลังงานและการจัดการขยะมูลฝอยของสถานศึกษา, นิภาพร เดโชเกียรติถวัลย์

Chulalongkorn University Theses and Dissertations (Chula ETD)

สถานศึกษาเป็นหน่วยงานขนาดใหญ่ที่ประกอบไปด้วยกิจกรรมที่มีความหลากหลาย จึงถือเป็นองค์กรที่สำคัญแห่งหนึ่งซึ่งมีการใช้พลังงานสูงทั้งในรูปพลังงานไฟฟ้าและเชื้อเพลิง นอกจากนี้ยังก่อให้เกิดขยะปริมาณมาก ซึ่งหมายถึงเป็นแหล่งของการปล่อยก๊าซเรือนกระจกสูงด้วย งานวิจัยนี้ได้ทำการประเมินคาร์บอนฟุตพริ้นท์องค์กรของสถานศึกษาพร้อมทั้งศึกษาแนวทางการลดการปล่อยก๊าซเรือนกระจกจากการอนุรักษ์พลังงงานและการจัดการขยะมูลฝอย ผลการศึกษาพบว่า ในปีพ.ศ. 2561 มหาวิทยาลัย ก มหาวิทยาลัย ข และวิทยาลัย ค มีปริมาณการปล่อยก๊าซเรือนกระจกทั้งหมดเท่ากับ 5,912.32 6,487.32 และ 1,458.05 ตันคาร์บอนไดออกไซด์เทียบเท่าต่อปี ตามลำดับ โดยการใช้พลังงานไฟฟ้าในขอบเขตที่ 2 และการกำจัดขยะในขอบเขตที่ 3 เป็นกิจกรรมที่ส่งผลต่อการปล่อยก๊าซเรือนกระจกมากที่สุดเป็นอันดับ 1 และ 2 ตามลำดับ มาตรการอนุรักษ์พลังงานซึ่งมีศักยภาพในการลดก๊าซเรือนกระจกและมีความคุ้มค่าทางเศรษฐศาสตร์ ได้แก่ มาตรการการเปลี่ยนไปใช้เครื่องปรับอากาศและเครื่องทำน้ำเย็นประสิทธิภาพสูง การติดตั้งอุปกรณ์ควบคุมความเร็วรอบเครื่องสูบน้ำเย็น การเปลี่ยนไปใช้หลอดไฟแบบ LED และการติดตั้ง Solar rooftop บนอาคาร นอกจากนี้การจัดการขยะมูลฝอยซึ่งมีประสิทธิภาพในการลดก๊าซเรือนกระจก สามารถทำได้โดยการจัดการขยะแบบผสมผสาน ได้แก่ การฝังกลบร่วมกับการคัดแยกขยะเพื่อการรีไซเคิล การนำเศษอาหารไปเป็นอาหารสัตว์ และการนำใบไม้มาทำสารปรับปรุงดิน

Towards Multiple Model Approach To Bridge Deterioration, Jin A. Collins

Open Access Theses & Dissertations

The Intermodal Surface Transportation Efficiency Act of 1991 (ISTEA) marked the start of a new era in transportation in the United States. ISTEA required transportation agencies to take a proactive approach to planning and management of their assets. This included requirements for managing pavement, bridges, safety, congestion, public transportation, and intermodal systems. For horizontal transportation assets (i.e., bridges and pavement), deterioration modeling is an essential tool (Yanev and Chen 1993). Since ISTEA, Bridge Management Systems (BMS) have been utilized to inform decision-making regarding bridge projects such as maintenance, rehabilitation, and replacement (MR&R) under financial limitations (Agrawal, Kawaguchi, and Chen 2010). …

Decision Support Tools For Parking Management On University Campuses, Okan Gurbuz

Open Access Theses & Dissertations

University campuses generate and attract trips with unique characteristics. Most universities are constantly challenged by the parking congestion issues. To manage campus parking infrastructure, most universities have established parking departments. This department is referred as the University Parking Office (UPO) in this Dissertation. There is no methodology or tool to assist the UPOs in their decision-making process. This Dissertation focuses on student parking and has developed models and methodologies as decision support tools to assist UPOs in managing student parking on campuses.

This Dissertation answers six Research Questions related to parking management on university campuses: (1) How many students are …

System Dynamic Model Of 1-Dimensional Unsaturated Water And Solute Transport For Predicting Salinity Stress In Crops, Thomas Poulose

Open Access Theses & Dissertations

There is a complex non-linear system dynamic between the water and salt transport in the unsaturated vadose zone where the salt transport and accumulation affect the water fluxes and vice versa. In addition, factors such as precipitation, transpiration, water infiltration and solute transport in the unsaturated zone of subsurface soil further complicate the processes involved. We have developed a system dynamics model for simulating the one-dimensional unsaturated water and solute transport along with root water uptake in the vadose zone. The model uses finite difference method for solving Richard's equation with a sink term for water transport and root water …

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 …

Evaluating The Effects Of Water Influx On The Mississippi Sound: Current Vs. Historical Relationships, Jarett Lee Bell

Electronic Theses and Dissertations

This research investigated the influence of the opening of the Bonnet Carre Spillway and other fresh water inputs on the Mississippi Sound. The Bonnet Carre Spillway was completed in 1931 and was constructed to protect New Orleans whenever the Mississippi River is at flood stage. The spillway drains into Lake Pontchartrain a brackish-water lagoon north of New Orleans which then drains into Lake Borgne and subsequently into the Mississippi Sound. The inflow of water from the spillway changes the water chemistry of all receiving water bodies and impacts the waters of the Mississippi Gulf Coast. We collected in-situ temperature specific …

Decoding And Optimizing Magnesium Phosphate Binders For Additive Construction Applications, Hashem Khaled Almashaqbeh

Electronic Theses and Dissertations

This work aims to give more insight about the physical, mechanical, thermal, and chemical performance of the MPC paste composites. Our primary outcome from this research is to improve the MPC composites with different additives, including boric acid, GnP, and acetic acid for potential utilization in 3DcP applications. Furthermore, Martian and Lunar regolith simulants can be mixed with the MPC composites to create mortars as a possible extraterrestrial 3DP in-situ construction material mainly to support the NASA habitation exploration mission.

Damage Detection Using Destructive Testing Of A Reinforced Concrete Slab, Michael Edward Daves

Electronic Theses and Dissertations

Visual inspection is one of the primary tools for evaluating the health of bridges as more reach or exceed their intended lifespan. Bridge deterioration must be monitored to ensure continued safety, so owners need maintenance reports to decide on corrective actions. Strategic repair can offer asset managers the benefit of saving money and time; thus, knowing where to locate and what type of repairs can be challenging when relying on visual techniques alone. A tool designed to aid bridge inspectors is the SHE^tm program, which quantitatively measures damage location and severity for any set of time data.

Investigating The Use Of Passive Acoustics As A Surrogate Method Of Monitoring Coarse Bedload Transport In Rivers And Streams Via Laboratory Experiments And Field Studies, Bradley Goodwiller

Electronic Theses and Dissertations

The movement of coarse gravel in rivers in streams is important for many applications including wildlife habitation, river morphology, infrastructure maintenance and marine navigation. Physical sampling remains the most accurate method of determining coarse bedload transport but it can be expensive, dangerous and flow intrusive. Surrogate methods of monitoring bedload transport is an active area of research worldwide. One such method is the use of passive acoustics to record the sound generated when gravel particles in motion impact each other or the particles on the bed. This dissertation presents research and development that has been conducted on three key areas …

Tsunamigenic Potential Of The Baiyun Slide Complex In The South China Sea, Linlin Li, Fengyan Shi, Gangfeng Ma, Qiang Qiu

Civil & Environmental Engineering Faculty Publications

The Baiyun slide complex contains geological evidence for some of the largest landslide ever discovered in the continental slopes of the South China Sea. High-resolution seismic data suggest that a variety of landslides with varied scales have occurred repeatedly in this area. The largest landslide reconstructed from bathymetric and seismic data has an estimated spatial coverage of ~5,500 km² and a conservative volume of ~1,035 km³. Here, using geomorphological and geotechnical data, we construct a series of probable landslide scenarios and assess their tsunamigenic capacity. By treating the slides as deformable mudflows, we simulate the dynamics of …

The Impact Of Extreme Virtual Elevation Above Grade On Construction Workers' Physiological Responses, Physical Responses, And Task Performance, Mahmoud Habibnezhad

Department of Construction Engineering and Management: Dissertations, Theses, and Student Research

On average, in every two work hours, one person dies from work-related injuries at construction sites. Most incidents are due to falling from elevated surfaces. Slips, trips, and loss of balance are the main causes. Studies suggest that instigating visual mismatch and physiological changes are among the most important reasons behind falling from narrow elevated surfaces. By using advanced virtual reality models, this dissertation aims to highlight some of the possible effects of a destabilizing environment (i.e., elevation above grade) on workers’ physiological responses and task performance. More specifically, this dissertation strives to find potential effects of elevation above grade …

Warrants For Right-Turn Flashing Yellow Arrow Signal Phases, Mohammed Alfawzan

Electronic Theses and Dissertations

The right-turn flashing yellow arrow (FYA) signal phasing is a new signal practice in the United States. The Manual on Uniform Traffic Control Devices MUTCD (2009) allocates a signal phasing section for the right-turn FYA, which requires a four-section head FYA signal. It supports multiple phases' indications that guide the motorist through permissive, protected, and/or permissive/protected phases. For this dissertation, I investigated three permissive right-turn FYA signal phases in various traffic conditions and signal timing circumstances. The first permissive right-turn FYA signal phase is the tight-turn on impeding through (RTOIT) taking place during the cross-street through traffic movement. The second …

Reports From The United States Of North America On Railroads, Steamship Travel, Banks And Other Public Undertakings By Franz Anton Ritter Von Gerstner And Description Of A Journey Through The United States Of North America By Clara Von Gerstner, Née Von Epplen-Härtenstein Translated, With An Introduction, By Steven Rowan, Steven Rowan, Franz Anton Ritter Von Gerstner, Clara Von Gerstner, Née Von Epplen-Härtenstein

History Faculty Works

What follows contains a translation of the Berichte aus den Vereinigten Staaten von Nordamerika… [= Reports from the United States of North America] by Franz Anton Ritter von Gerstner, published in Leipzig in August 1839, and posted on the website of “austrian literature online.” It is the companion piece to two other classics of contemporary travel literature, one of them Ritter von Gerstner’s massive description of the transportation system of the United States published by F. A. von Gerstner’s assistant, Ludwig Klein,1 as well as the touching detailed travel narrative of his widow, Clara von Gerstner, Beschreibung einer Reise durch …

Redefining Construction “As-Built” Plans To Meet Current Kentucky Transportation Cabinet Needs, Victoria Lynn Lasley

Theses and Dissertations--Civil Engineering

As-built drawings are the traditional method used by the construction industry to record changes made during construction. As-builts provide valuable information for new design projects as well as rehabilitation and remediation projects. The completeness and accuracy of these plans are essential for transportation industries and their success. While the importance of as-builts is widely recognized, the process of creating them has proven to be difficult. It is a time consuming process and entities often lack the resources necessary to complete accurate and detailed as-builts. After an investigation of current as-built operations within State Transportation Agencies, recommendations have been made to …

Improving Safety Performance Of Highway Maintenance Crews Through Pre-Task Safety Toolbox Talks, Zamaan Al-Shabbani

Theses and Dissertations--Civil Engineering

The dangerous work environment in the construction industry and the inherent high risks associated with construction work make it the focus of safety training and regulations. Highway construction and maintenance has unique hazards but seemingly less directly applicable safety standards, regulations, and programs. Department of Transportation (DOT) employees working in highway maintenance are exposed to a variety of unique hazards specifically associated with their work and not relating to the adjacent traffic. Yet, highway construction and maintenance work has not received sufficient attention in terms of safety research and programs. The lack of safety training and education in highway construction …

An Assessment Of Historical Traffic Forecast Accuracy And Sources Of Forecast Error, Jawad Mahmud Hoque

Theses and Dissertations--Civil Engineering

Transportation infrastructure improvement projects are typically huge and have significant economic and environmental effects. Forecasts of demand of the facility in the form of traffic level help size the project as well as choose between several alternatives. Inaccuracy in these forecasts can thus have a great impact on the efficiency of the operational design and the benefits accrued from the project against the cost. Despite this understanding, evaluation of traffic forecast inaccuracy has been too few, especially for un-tolled roads in the United States. This study, part of a National Cooperative Highway Research Program (NCHRP) funded project, bridges this gap …

Hazard Recognition And Risk Perception Among Union Electricians, Elyas Jazayeri

Theses and Dissertations--Civil Engineering

Hazard recognition and risk perception are two important factors that are a focus of most safety training programs. According to previous research, unrecognized hazards could lead to underestimation of risks, which ultimately could lead to injuries and fatalities. The primary objective of this research was to assess hazard recognition and safety risk perception skills in the electrician trade among electricians in unions. Another goal of this study was to find possible correlation between level of engagement in safety training and hazard recognition and risk perception skills. The research objectives were accomplished by gathering data from sixty-seven apprentices and journeymen across …

Use Of Functionalized Bimetallic Membranes For Treatment Of Contaminated Groundwater At A Hazardous Waste Site In Kentucky, Lucy C. Pacholik

Theses and Dissertations--Civil Engineering

Providing access to clean drinking water will continue to be a challenge for civil engineers for generations to come. Since many communities around the world rely on groundwater as a source of drinking water, remediation technologies must be implemented at sites where groundwater contamination exists due to years of mismanagement of hazardous waste. Using nanosized zero-valent metals such as iron and zinc embedded within and on the surface of functionalized (PAA) membrane filters has shown to be an effective dechlorination technique for contaminated groundwater. Introducing a noble metal such as Pd or Ni increases reaction rates by acting a catalyst …