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Articles 1 - 30 of 98
Full-Text Articles in Environmental Sciences
Fate And Reactivity Of Natural And Manufactured Nanoparticles In Soil/Water Environments, Allison Vandevoort
Fate And Reactivity Of Natural And Manufactured Nanoparticles In Soil/Water Environments, Allison Vandevoort
All Dissertations
Nanoparticles (NPs), < 100 nm in diameter, make up the smallest component of solid material. This small size often causes increased reactivity in soil/water environments, which is true for both natural NPs, such as very fine clay particles, and for manufactured nanoparticles, such as silver nanoparticles (AgNPs). As the importance of these particles is more widely recognized, and as manufactured nanoparticles, especially AgNPs, are increasing in production, it is essential to consider their effect on terrestrial and aquatic environments. The studies presented in this dissertation show that both the physicochemical characteristics of the NPs (e.g., particle size, surface coating, elemental composition), as well as soil-water interfacial chemistry (e.g., ionic strength, ligand concentration, pH), are instrumental in predicting environmental fate and reactivity.
Ligand type and concentration were especially important in NP reactivity and bioavailability. Using the hard/soft acid/base concept, the effect of phosphate ligand (hard base) on Fe/Al (hard acid) oxyhydroxide natural NPs was investigated in Chapters 2 and 3. Adding phosphate to soil NPs and reference nano-minerals (Fe-(oxyhydr)oxides and kaolinite) caused coagulation or dispersion, changing the particle size of the NPs, as well as affecting the amount of phosphate in its bioavailable (i.e., dissolved) form. A review of the literature in Chapters 1 and 3 revealed that changes in the soil conditions, and therefore, soil colloids/NPs (e.g., increasing organic …
Sorption And Enantiomerization Of Current Use Chiral Pesticides, April Hall
Sorption And Enantiomerization Of Current Use Chiral Pesticides, April Hall
All Dissertations
Chiral pesticides are prevalent in the environment today and are known to react selectively with chiral environmental components such as microbes, enzymes, and other naturally occurring chiral materials. In addition, chiral sorption is a process that has been occasionally investigated in the study of homochirality (the exclusive presence of one enantiomer in living organisms), but almost overlooked in environmental science. For chiral sorption to occur, the sorbent and sorbate must be chiral entities. In the environment, there are abundant natural surfaces that are chiral, including clay minerals and organic matter present in soil, sediment and aqueous solution. A knowledge of …
Spider Mediation Of Polychlorinated Biphenyl Transport And Transformation Across Riparian Ecotones, Diana Delach
Spider Mediation Of Polychlorinated Biphenyl Transport And Transformation Across Riparian Ecotones, Diana Delach
All Dissertations
Polychlorinated biphenyls (PCBs) contaminate the sediment of the Twelvemile Creek / Lake Hartwell Superfund Site, and are known to be transported throughout the resident biota via trophic transport. Riparian spiders have recently become of interest because they are terrestrial organisms that have significant PCB exposures derived from aquatic sources. Many riparian spiders primarily consume insects emerging from contaminated aquatic systems, and these spiders can have a body burden as high as 2900 ng/g lipid. These emergent insects carry contaminants out of the river and into the riparian zone where they are captured by spiders, which effectively directs the contamination towards …
The Behavior And Toxicity Of Metal Oxide Nanoparticles In Aqueous Solution, Phenny Mwaanga
The Behavior And Toxicity Of Metal Oxide Nanoparticles In Aqueous Solution, Phenny Mwaanga
All Dissertations
The dissolution and aggregation of metal oxides nanoparticles (NPs) in aqueous solution not only alter the abundance and toxicology of NPs, but also makes the effective assessment and the correct interpretation of effects of NPs on organisms challenging. The extent to which these processes (dissolution and aggregation) occur largely depend on pH, ionic strength, dissolved natural organic matter (NOM) and NPs characteristics. This study investigated the dissolution and aggregation behavior of the four metal oxide NPs (nZnO, nCuO, nFe2O3 and nTiO2) in aqueous solution as influenced by pH, ionic strength and NOM and examined the toxicity of these NPs to …
Conservation Needs Of Nearshore Seabirds In The Southeastern U.S. Addressed Through Habitat Use Surveys And Assessments Of Health And Mercury Concentrations, Lisa Eggert
All Dissertations
Seabirds encounter a range of natural and anthropogenic stressors in the nearshore environment and are ideal candidate species for long-term monitoring of changes to coastal systems. The mitigation of threats to nearshore seabirds requires management of essential coastal habitat and monitoring population health and trends. In this dissertation, I first evaluated intertidal habitat use for a suite of coastal species as it relates to management practices at a seabird nesting island in South Carolina. Specifically, my objectives were (1) to determine intertidal areas of high bird abundance, (2) to examine course-scale habitat characteristics and human use of intertidal areas associated …
Hydrologic Influences Within A Tidal Freshwater Forested Wetland, Brooke V. James, Carl C. Trettin, Timothy J. Callahan
Hydrologic Influences Within A Tidal Freshwater Forested Wetland, Brooke V. James, Carl C. Trettin, Timothy J. Callahan
S.C. Water Resources Conference
2012 S.C. Water Resources Conference - Exploring Opportunities for Collaborative Water Research, Policy and Management
Sediment Based Turbidity Analyses For Representative South Carolina Soils, K E. Resler, C B. Sawyer, C V. Privette Iii, J C. Hayes
Sediment Based Turbidity Analyses For Representative South Carolina Soils, K E. Resler, C B. Sawyer, C V. Privette Iii, J C. Hayes
S.C. Water Resources Conference
2012 S.C. Water Resources Conference - Exploring Opportunities for Collaborative Water Research, Policy and Management
Application Of Qpcr Technologies In Stormwater Source Tracking And Determination Of Host Contributions Of Fecal Indicator Bacteria, J Michael Trapp, Erin Burge, Susan Libes
Application Of Qpcr Technologies In Stormwater Source Tracking And Determination Of Host Contributions Of Fecal Indicator Bacteria, J Michael Trapp, Erin Burge, Susan Libes
S.C. Water Resources Conference
2012 S.C. Water Resources Conference - Exploring Opportunities for Collaborative Water Research, Policy and Management
Genetic Sequencing Methodologies To Assess Human Contributions Of Fecal Coliforms To A Freshwater Receiving Stream, D A. Graves, D E. Chestnut, E B. Rabon, W J. Jones, J G. Moore, C Johnston
Genetic Sequencing Methodologies To Assess Human Contributions Of Fecal Coliforms To A Freshwater Receiving Stream, D A. Graves, D E. Chestnut, E B. Rabon, W J. Jones, J G. Moore, C Johnston
S.C. Water Resources Conference
2012 S.C. Water Resources Conference - Exploring Opportunities for Collaborative Water Research, Policy and Management
Fish Health In The Reedy-Saluda Watershed, As Measured Through Biochemical Markers, Peter Van Den Hurk, Jessica Mierzejewski, Lindsay Gerzel, Dennis C. Haney
Fish Health In The Reedy-Saluda Watershed, As Measured Through Biochemical Markers, Peter Van Den Hurk, Jessica Mierzejewski, Lindsay Gerzel, Dennis C. Haney
S.C. Water Resources Conference
2012 S.C. Water Resources Conference - Exploring Opportunities for Collaborative Water Research, Policy and Management
Water Supply Planning: Finding Our Hidden Reservoirs, Rebecca L. Haynes
Water Supply Planning: Finding Our Hidden Reservoirs, Rebecca L. Haynes
S.C. Water Resources Conference
2012 S.C. Water Resources Conference - Exploring Opportunities for Collaborative Water Research, Policy and Management
Spatially Explicit Decision Support For Watershed Management On Military Lands: Stream Integrity, Interactive Programming, And Best Management Practices, J Pike, D Lipscomb, R Baldwin, W English
Spatially Explicit Decision Support For Watershed Management On Military Lands: Stream Integrity, Interactive Programming, And Best Management Practices, J Pike, D Lipscomb, R Baldwin, W English
S.C. Water Resources Conference
2012 S.C. Water Resources Conference - Exploring Opportunities for Collaborative Water Research, Policy and Management
Turning Analysis Into Action: Targeting Likely Sources Of Watershed Impairment, Katy R. Beckham, Christine Boring, Mark White
Turning Analysis Into Action: Targeting Likely Sources Of Watershed Impairment, Katy R. Beckham, Christine Boring, Mark White
S.C. Water Resources Conference
2012 S.C. Water Resources Conference - Exploring Opportunities for Collaborative Water Research, Policy and Management
A Case Study In Watershed-Based Plan Development And Implementation For The May River Watershed In Bluffton, Sc, Kimberly W. Jones, Ronald Bullman
A Case Study In Watershed-Based Plan Development And Implementation For The May River Watershed In Bluffton, Sc, Kimberly W. Jones, Ronald Bullman
S.C. Water Resources Conference
2012 S.C. Water Resources Conference - Exploring Opportunities for Collaborative Water Research, Policy and Management
Stormwater Notice Of Intent Interactive Map Service, Jeannie P. Eidson, Amar Yara, David P. Johnson
Stormwater Notice Of Intent Interactive Map Service, Jeannie P. Eidson, Amar Yara, David P. Johnson
S.C. Water Resources Conference
2012 S.C. Water Resources Conference - Exploring Opportunities for Collaborative Water Research, Policy and Management
Streamflow Separation To Estimate Daily Unregulated Streamflow Of Ungauged Watersheds In The Coastal Plains Of Southeastern United States, H Ssegane, D M. Amatya, E W. Tollner, J E. Nettles
Streamflow Separation To Estimate Daily Unregulated Streamflow Of Ungauged Watersheds In The Coastal Plains Of Southeastern United States, H Ssegane, D M. Amatya, E W. Tollner, J E. Nettles
S.C. Water Resources Conference
2012 S.C. Water Resources Conference - Exploring Opportunities for Collaborative Water Research, Policy and Management
Indicators Of Hydrologic Permanence In Headwater Streams Of South Carolina, William R. Wenerick, Ken M. Fritz, Mitch S. Kostich
Indicators Of Hydrologic Permanence In Headwater Streams Of South Carolina, William R. Wenerick, Ken M. Fritz, Mitch S. Kostich
S.C. Water Resources Conference
2012 S.C. Water Resources Conference - Exploring Opportunities for Collaborative Water Research, Policy and Management
Legal And Practical Issues Associated With Stormwater Contruction Permits In The New Economy: Tales From The Recession And Recovery, Alexander G. Shissias
Legal And Practical Issues Associated With Stormwater Contruction Permits In The New Economy: Tales From The Recession And Recovery, Alexander G. Shissias
S.C. Water Resources Conference
2012 S.C. Water Resources Conference - Exploring Opportunities for Collaborative Water Research, Policy and Management
Characterization Of Stormwater Runoff From Selected South Carolina Department Of Transportation Maintenance Yards, Kevin J. Conlon, Peter J. Reinhart
Characterization Of Stormwater Runoff From Selected South Carolina Department Of Transportation Maintenance Yards, Kevin J. Conlon, Peter J. Reinhart
S.C. Water Resources Conference
2012 S.C. Water Resources Conference - Exploring Opportunities for Collaborative Water Research, Policy and Management
Applying Aquifer Storage Recovery Technology To Address Water Resource Challenges In Different Coastal Plain Settings, Christopher Paul Foldesi, Richard K. Spruill, James K. Holley
Applying Aquifer Storage Recovery Technology To Address Water Resource Challenges In Different Coastal Plain Settings, Christopher Paul Foldesi, Richard K. Spruill, James K. Holley
S.C. Water Resources Conference
2012 S.C. Water Resources Conference - Exploring Opportunities for Collaborative Water Research, Policy and Management
Fecal Coliform Monitoring, Characterization, And Mitigation In The Lake Keowee Watershed, Oconee County, South Carolina, George M. Huddleston Iii, Robert R. Swank Jr, Morris B. Warner
Fecal Coliform Monitoring, Characterization, And Mitigation In The Lake Keowee Watershed, Oconee County, South Carolina, George M. Huddleston Iii, Robert R. Swank Jr, Morris B. Warner
S.C. Water Resources Conference
2012 S.C. Water Resources Conference - Exploring Opportunities for Collaborative Water Research, Policy and Management
Fish Community Response To Dam Removal In Twelvemile Creek, Pickens County, South Carolina, Cathy A. Marion, Mark C. Scott, Kevin M. Kubach
Fish Community Response To Dam Removal In Twelvemile Creek, Pickens County, South Carolina, Cathy A. Marion, Mark C. Scott, Kevin M. Kubach
S.C. Water Resources Conference
2012 S.C. Water Resources Conference - Exploring Opportunities for Collaborative Water Research, Policy and Management
Effects Of Uncertainty Of Drainage Area On Low-Gradient Watershed Hydrology, D Amatya, S Panda, C Trettin, H Ssegane
Effects Of Uncertainty Of Drainage Area On Low-Gradient Watershed Hydrology, D Amatya, S Panda, C Trettin, H Ssegane
S.C. Water Resources Conference
2012 S.C. Water Resources Conference - Exploring Opportunities for Collaborative Water Research, Policy and Management
Using Water Chemistry Data To Assess Stormwater Pathways In Lowland Watersheds, Michael P. Griffin, Thom H. Epps, Timothy J. Callahan, Vijay M. Vulava, Dan R. Hitchcock
Using Water Chemistry Data To Assess Stormwater Pathways In Lowland Watersheds, Michael P. Griffin, Thom H. Epps, Timothy J. Callahan, Vijay M. Vulava, Dan R. Hitchcock
S.C. Water Resources Conference
2012 S.C. Water Resources Conference - Exploring Opportunities for Collaborative Water Research, Policy and Management
Passive Polymer Application For Turbidity Reduction, James W. Berry Iii, Calvin B. Sawyer, Charles V. Privette Iii, John C. Hayes, William C. Bridges Jr
Passive Polymer Application For Turbidity Reduction, James W. Berry Iii, Calvin B. Sawyer, Charles V. Privette Iii, John C. Hayes, William C. Bridges Jr
S.C. Water Resources Conference
2012 S.C. Water Resources Conference - Exploring Opportunities for Collaborative Water Research, Policy and Management
Comparing Flow And Sediment Dynamics In An Urban And Forested Stream In The Lower Coastal Plains Of South Carolina, Anand D. Jayakaran, Susan M. Libes, Dave Fuss, Daniel R. Hitchcock
Comparing Flow And Sediment Dynamics In An Urban And Forested Stream In The Lower Coastal Plains Of South Carolina, Anand D. Jayakaran, Susan M. Libes, Dave Fuss, Daniel R. Hitchcock
S.C. Water Resources Conference
2012 S.C. Water Resources Conference - Exploring Opportunities for Collaborative Water Research, Policy and Management
Dying Of Thirst: Impact Of Reduced Freshwater Inflow On South Carolina Blue Crabs, Michael J. Childress, Kirk J. Parmenter
Dying Of Thirst: Impact Of Reduced Freshwater Inflow On South Carolina Blue Crabs, Michael J. Childress, Kirk J. Parmenter
S.C. Water Resources Conference
2012 S.C. Water Resources Conference - Exploring Opportunities for Collaborative Water Research, Policy and Management
Moving Forward: Refinement Of The Intelligent River, A Basin-Scale Monitoring Instrument, Gene W. Eidson, Samuel T. Esswein, Oscar P. Flite Iii, Robert M. Geist Iii, Sebastien Goasguen, Jason O. Hallstrom, Anand D. Jayakaran, Christopher J. Post, Julia Sharp, Jerry Tessendorf, Kuang-Ching Wang, David L. White
Moving Forward: Refinement Of The Intelligent River, A Basin-Scale Monitoring Instrument, Gene W. Eidson, Samuel T. Esswein, Oscar P. Flite Iii, Robert M. Geist Iii, Sebastien Goasguen, Jason O. Hallstrom, Anand D. Jayakaran, Christopher J. Post, Julia Sharp, Jerry Tessendorf, Kuang-Ching Wang, David L. White
S.C. Water Resources Conference
2012 S.C. Water Resources Conference - Exploring Opportunities for Collaborative Water Research, Policy and Management
Green Infrastructure In Coastal Landscapes: Ecological Design, Hydrological Function, And Sustainable Land Use Goals, Daniel R. Hitchcock, Anand D. Jayakaran, Thom H. Epps, David L. White
Green Infrastructure In Coastal Landscapes: Ecological Design, Hydrological Function, And Sustainable Land Use Goals, Daniel R. Hitchcock, Anand D. Jayakaran, Thom H. Epps, David L. White
S.C. Water Resources Conference
2012 S.C. Water Resources Conference - Exploring Opportunities for Collaborative Water Research, Policy and Management
Novel Strategies In Groundwater Bioremediation: New Solutions To Old Problems, Kevin T. Finneran
Novel Strategies In Groundwater Bioremediation: New Solutions To Old Problems, Kevin T. Finneran
S.C. Water Resources Conference
2012 S.C. Water Resources Conference - Exploring Opportunities for Collaborative Water Research, Policy and Management