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Articles 1 - 5 of 5
Full-Text Articles in Engineering
Biological Treatment To Remove Color And Toxicity Of Effluent From The Manufacturing Of Navipol Yellow Gr, Larry French
Biological Treatment To Remove Color And Toxicity Of Effluent From The Manufacturing Of Navipol Yellow Gr, Larry French
All Theses
Navipol Yellow GR is an organic solvent azo dye manufactured by Sunbelt Corp. in Rock Hill, SC. The effluent generated from the manufacturing of this dye is highly colored, toxic, and contains trace solvents consisting of mixed xylene isomers and ethyl benzene. Traditional wastewater treatment systems are unable to remove the color and toxicity from the effluent. This study investigated using a sequential anaerobic / aerobic treatment system to decrease color and toxicity of the dye effluent. The anaerobic phase used bacteria cultures of Pseudomonas aeruginosa, Bacillus subtilis, Enterococcus faecalis, or Enterobacter aerogenes to decrease the color of the dye. …
The Formation And Control Of Iodinated Trihalomethanes In Drinking Water Treatment, Darryl Jones
The Formation And Control Of Iodinated Trihalomethanes In Drinking Water Treatment, Darryl Jones
All Theses
Ever since toxic disinfection by-products (DBPs) were discovered in the 1970s drinking water utilities have had to continue to develop treatment strategies to reduce the acute health risk from infectious pathogens in water, and at the same time limit the formation of disinfection by-products. The recent two stage (1998, 2006) D/DBP rule enacted by the Environmental Protection Agency (EPA) which sets limits of 80 µg/L for trihalomethanes (THMs) and 60 µg/L for haloacetic acids (HAAs) will likely put more pressure on utilities in the future to decrease their chorine contact time and follow that with ammonia addition to form monochloramine …
Leaching Of Dissolved Organic Carbon And Selected Inorganic Constituents From Scrap Tires, Meric Selbes
Leaching Of Dissolved Organic Carbon And Selected Inorganic Constituents From Scrap Tires, Meric Selbes
All Theses
An environmentally friendly method for the disposal of scrap tires is currently unavailable; as a result, ultimate disposal of used vehicle tires continues to be a major challenge around the world. In the United States (US), during the past two decades, scrap tires have been generated at the rate of approximately one tire per person per year (i.e., approximately 290 million new scrap tires every year). It is estimated that there are currently 2 billion tires stockpiled in the US. Due to various problems involved in the disposal of scrap tires, different alternatives for recycle and reuse have been examined; …
Modeling Nitrogen Loss From Regional Switchgrass Agriculture, Saumya Sarkar
Modeling Nitrogen Loss From Regional Switchgrass Agriculture, Saumya Sarkar
All Theses
A water quality modeling study was conducted to determine and compare nitrogen loss from agricultural systems growing switchgrass and cotton in the southeastern USA. The water quality impacts were modeled at the plot scale and at the watershed scale. The Soil and Water Assessment Tool (SWAT) was used to replicate field conditions observed at switchgrass research plots at Pee Dee Research and Educational Center at Florence, South Carolina. The plot scale modeling suggested that in the early years of growth there is significant nitrogen loss from switchgrass to streamflow and groundwater but they are significantly less as the switchgrass matures. …
The Characterization, Isolation, And Fractionation Of Natural Organic Matter From Three Surface Waters, Olivia Orr
The Characterization, Isolation, And Fractionation Of Natural Organic Matter From Three Surface Waters, Olivia Orr
All Theses
The main objective of this study was to gain insight to the principles of isolation of natural organic matter (NOM) using reverse osmosis (RO) and subsequent fractionation using resin adsorption chromatography (RAC). Specifically, this study evaluated the RO and RAC methods for NOM characterization from three surface waters with varying physiochemical characteristics. Efficiency of RO was assessed by closing mass balances for dissolve organic carbon (DOC). Mass balances were also closed for dissolved nitrogen (DN), bromide (Br-), nitrate (NO3-), total calcium (Ca), total potassium (K), total manganese (Mn), total iron (Fe), total magnesium (Mg), total aluminum (Al), total copper (Cu), …