Current Search: Groundwater -- Purification (x)
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- Title
- A ten-year study on the removal of contaminated groundwaterand its impact to a run-off canal and coastal environment.
- Creator
- Wang, Tsen C., Harbor Branch Oceanographic Institute
- Date Issued
- 1994
- PURL
- http://purl.flvc.org/fau/fd/FA00007335
- Subject Headings
- Groundwater, Groundwater--Pollution, Trichloroethylene, Groundwater--Purification--Trichloroethylene removal
- Format
- Document (PDF)
- Title
- The removal of trichloroethylene contaminated groundwater at Vero Beach, Florida.
- Creator
- Wang, Tsen C., Lenahan, Robert A., Kanik, M., TenEyck, John, Harbor Branch Oceanographic Institute
- Date Issued
- 1985
- PURL
- http://purl.flvc.org/FCLA/DT/3183673
- Subject Headings
- Groundwater--Purification--Trichloroethylene removal, Vero Beach (Fla.)
- Format
- Document (PDF)
- Title
- AQUEOUS ARSENIC REMOVAL USING NOVEL CARBON ADSORBENTS THAT ARE DERIVED FROM WASTE ALGAE.
- Creator
- Rawal, Rishabh, Meeroff, Dan, Florida Atlantic University, Department of Civil, Environmental and Geomatics Engineering, College of Engineering and Computer Science
- Abstract/Description
-
Human exposure to arsenic from natural as well as anthropogenic sources can lead to a detrimental impact to the nervous system, cardiovascular system and can also cause cancer. Historical agricultural runoff has led to an accumulation of arsenic in groundwater and soils around Lake Okeechobee and many golf courses in Florida. This research involved studying the removal of aqueous arsenic via adsorption using activated carbon derived from algae. Carbon derived from Sargassum removed 41.47% of...
Show moreHuman exposure to arsenic from natural as well as anthropogenic sources can lead to a detrimental impact to the nervous system, cardiovascular system and can also cause cancer. Historical agricultural runoff has led to an accumulation of arsenic in groundwater and soils around Lake Okeechobee and many golf courses in Florida. This research involved studying the removal of aqueous arsenic via adsorption using activated carbon derived from algae. Carbon derived from Sargassum removed 41.47% of arsenic after a contact time of 2 hours. Adsorbents created from blue-green algae showed essentially no arsenic removal under the same conditions. Various chemical additives were tested to improve arsenic adsorption as well. Modification of the adsorbent surface with magnesium chloride demonstrated an arsenic removal efficiency of 98.6% when added to commercial activated carbon. However, when magnesium chloride was used to modify the surface of Sargassum-derived carbon adsorbents, the arsenic removal efficiency after 2 hours was 26.7%. It is recommended to investigate other surface modification agents that can potentially improve adsorption of arsenic.
Show less - Date Issued
- 2022
- PURL
- http://purl.flvc.org/fau/fd/FA00014036
- Subject Headings
- Arsenic, Adsorption, Algae, Carbon, Activated, Groundwater--Purification--Arsenic removal
- Format
- Document (PDF)
- Title
- Experimental and numerical analysis of solute transport through saturated porous media.
- Creator
- Ranganathan, Sridhar., Florida Atlantic University, Abtahi, Homayoon, College of Engineering and Computer Science, Department of Ocean and Mechanical Engineering
- Abstract/Description
-
The problem of solute transport through saturated porous media is considered in this thesis. The end application of this study is to evaluate the option of spray irrigation as a means of disposing reverse osmosis effluent. Reverse osmosis effluent was sprayed on an experimental field composed of typical area soil. The changes in groundwater quality were monitored at intervals of ten to twenty days. Applying the experimentally obtained data to a basic numerical model, which uses the convection...
Show moreThe problem of solute transport through saturated porous media is considered in this thesis. The end application of this study is to evaluate the option of spray irrigation as a means of disposing reverse osmosis effluent. Reverse osmosis effluent was sprayed on an experimental field composed of typical area soil. The changes in groundwater quality were monitored at intervals of ten to twenty days. Applying the experimentally obtained data to a basic numerical model, which uses the convection-diffusion equation, the key parameter of the soil, D* the diffusion coefficient, is obtained for the Myakka sand. While the numerical model can predict the qualitative behavior of hardness and conductivity, hysteresis is observed for the response of the total organic carbon (TOC) content. Further studies are needed to understand and model the inherent capacitance of the soil for hardness and the observed hysteresis in TOC response.
Show less - Date Issued
- 1990
- PURL
- http://purl.flvc.org/fcla/dt/14629
- Subject Headings
- Groundwater flow, Groundwater--Quality, Water--Purification--Reverse osmosis process
- Format
- Document (PDF)
- Title
- Barometric distillation and the problem of non-condensable gases.
- Creator
- Martinson, Eiki., College of Engineering and Computer Science, Department of Computer and Electrical Engineering and Computer Science
- Abstract/Description
-
Barometric distillation is an alternative method of producing fresh water by desalination. This proposed process evaporates saline water at low pressure and consequently low temperature; low pressure conditions are achieved by use of barometric columns and condensation is by direct contact with a supply of fresh water that will be augmented by the distillate. Low-temperature sources of heat, such as the cooling water rejected by electrical power generating facilities, can supply this system...
Show moreBarometric distillation is an alternative method of producing fresh water by desalination. This proposed process evaporates saline water at low pressure and consequently low temperature; low pressure conditions are achieved by use of barometric columns and condensation is by direct contact with a supply of fresh water that will be augmented by the distillate. Low-temperature sources of heat, such as the cooling water rejected by electrical power generating facilities, can supply this system with the latent heat of evaporation. Experiments are presented that show successful distillation with a temperature difference between evaporator and condenser smaller than 10ê C. Accumulation of dissolved gases coming out of solution, a classic problem in lowpressure distillation, is indirectly measured using a gas-tension sensor. The results of these experiments are used in an analysis of the specific energy required by a production process capable of producing 15 liters per hour. With a 20ê C difference, and neglecting latent heat, this analysis yields a specific energy of 1.85 kilowatt-hour per cubic meter, consumed by water pumping and by removal of non-condensable gases.
Show less - Date Issued
- 2010
- PURL
- http://purl.flvc.org/FAU/2978949
- Subject Headings
- Chemistry, Physical and theoretical, Fluid mechanics, Saline water conversion, Renewable energy sources, Groundwater, Purification
- Format
- Document (PDF)