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Articles 1 - 6 of 6
Full-Text Articles in Engineering
Investigating A Passive Treatment System For The Removal Of Nutrients From Urban Runoff, Jasminn Gray
Investigating A Passive Treatment System For The Removal Of Nutrients From Urban Runoff, Jasminn Gray
UNLV Theses, Dissertations, Professional Papers, and Capstones
The Environmental Protection Agency recognizes urban runoff as a major contributor of surface water pollution with nutrients as the second largest cause of surface water impairment in the United States. While a water quality standard of 100 lbs/day total phosphorus load allocation for all nonpoint sources is permitted for the Las Vegas Valley (LVV) under the National Pollutant Discharge Elimination System, currently there is not a counterpart standard for nitrogen. With the continued development of the LVV and the depletion of the quantity of water in Lake Mead due to the ongoing drought, the concentrations of phosphorus and nitrogen species …
Application Of Biochar For Antibiotic-Free Nutrient Recovery From Source-Separated Human Urine, Sayeda Ummeh Masrura
Application Of Biochar For Antibiotic-Free Nutrient Recovery From Source-Separated Human Urine, Sayeda Ummeh Masrura
UNLV Theses, Dissertations, Professional Papers, and Capstones
In recent years, the application of biochar as a soil amendment has gained attention as a potential solution for nutrient management and environmental remediation. Biochar, a carbon-rich material produced through the pyrolysis of biomass under oxygen-limited conditions, exhibits unique physicochemical properties making it an effective sorbent for nutrients and contaminants. Its high surface area, porosity, and stability provide an ideal matrix for nutrient retention and release, as well as the immobilization of pollutants. One area of particular interest is the application of biochar for nutrient recovery from source-separated human urine. Source separation of urine has gained momentum as a sustainable …
Unraveling Water Quality Issues In The Colorado River Basin: Utilizing Remote Sensing Satellite Images, Statistical, And Machine Learning For Improved Monitoring, Godson Ebenezer Adjovu
Unraveling Water Quality Issues In The Colorado River Basin: Utilizing Remote Sensing Satellite Images, Statistical, And Machine Learning For Improved Monitoring, Godson Ebenezer Adjovu
UNLV Theses, Dissertations, Professional Papers, and Capstones
This research was aimed at exploring innovative and cost-effective tools in understanding the spatiotemporal variability of water quality parameters in the Colorado River Basin (CRB), which includes the Colorado River and major reservoirs and lakes in the USA including Lake Mead. The river which arises in the state of Colorado and empties into the Republic of Mexico at the Gulf of California, is a source of water to seven US states and the Republic of Mexico and provides water to about 40 million people and million acres of farmlands in seven states in the western US and the Republic of …
Virus Removal And Characterization During Secondary Treatment At A Full-Scale Plant, Tyler Hill
Virus Removal And Characterization During Secondary Treatment At A Full-Scale Plant, Tyler Hill
UNLV Theses, Dissertations, Professional Papers, and Capstones
Virus removal is paramount to water reuse applications and nearly all water reuse applications require extensive pathogen reduction because of high influent concentration, difficulty of detection and distinguishing infectivity. Typically, regulations stipulate virus attenuation that require the implementation of multi-barrier advanced treatment trains and award these reductions in log notation called log reduction values (LRVs). Reduction of virus concentrations are not awarded for virus removal that may occur in wastewater treatment steps which precede water reuse units such as activated sludge secondary biological treatment. A systematic literature review was performed and virus reduction at full-scale wastewater treatment plan was monitored …
A One-Dimensional Analysis Of A Microbial Fuel Cell For Efficient Acetate Removal And Power Density Output, David Rouhani
A One-Dimensional Analysis Of A Microbial Fuel Cell For Efficient Acetate Removal And Power Density Output, David Rouhani
UNLV Theses, Dissertations, Professional Papers, and Capstones
Microbial fuel cells (MFCs) are electrochemical devices that utilize microorganisms to convert organic matter into electrical energy. MFCs have been discussed to have potential application for sustainable wastewater treatment due to their ability to generate electricity while simultaneously treating contaminated water. To optimize MFC performance, numerical models can be used to understand the complex electrochemical and biological processes occurring in the system. In this study, a numerical model was developed to simulate the performance of MFCs under varying operating conditions and to investigate the performance of a MFC for treating wastewater fuel. More specifically, the MFC was modeled to oxidize …
Investigating Haloacetonitrile (Han) Formation Potential From Nitrogenous Antibiotics And Agrochemicals, Kazi Shafayet Haider
Investigating Haloacetonitrile (Han) Formation Potential From Nitrogenous Antibiotics And Agrochemicals, Kazi Shafayet Haider
UNLV Theses, Dissertations, Professional Papers, and Capstones
Disinfection can promote safe drinking water. Chlorine and chloramines are the two most used disinfectants. While these disinfectants are effective in inactivating disease-causing pathogens, they also produce hazardous byproducts when they react with organic compounds (precursors). Nitrogenous disinfection byproducts (N-DBPs) are more toxic than their counterparts. The increased use of nitrogen-based agrochemicals and antibitics has led to their detection in different water sources. The presence of secondary amine and aniline in these compounds can act as a source of reactive nitrogen to form N-DBPs. In addition, the increased concentration of bromide in water systems due to anthropogenic activities can enhance …