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Full-Text Articles in Physical Sciences and Mathematics
Laboratory Evaluation Of Dunaliella Tertiolecta As A Candidate Algal Species For Tertiary Wastewater Treatment Of Nitrogen And Phosphorus-Laden Effluents Impacting Marine Environments, Ashley Juanika Belle
Laboratory Evaluation Of Dunaliella Tertiolecta As A Candidate Algal Species For Tertiary Wastewater Treatment Of Nitrogen And Phosphorus-Laden Effluents Impacting Marine Environments, Ashley Juanika Belle
LSU Master's Theses
Dunaliella tertiolecta was evaluated to determine the effectiveness of utilizing the algal species to reduce the nutrient load of saline wastewater during tertiary treatment. Nutrient uptake studies performed using f/2-Si medium illustrated that Dunaliella tertiolecta favored phosphate uptake over nitrate-nitrogen. Over a 7-day observational period, total phosphorus concentration was reduced by over 97% and the kinetic rate of uptake observed was approximately 0.5 - 1 mg/L/day. Daily nitrate-nitrogen concentrations were highly variable and a model could not be determined to predict uptake behavior. In heavily concentrated nutrient loads, the algae still favored phosphate uptake. However as the nutrient load increased …
Evaluation Of Allochthonous And Autochthonous Microbial Populations In The In-Situ Remediation Of Weathered Oil In A Coastal Freshwater Habitat, Kyle Alan Schmidt
Evaluation Of Allochthonous And Autochthonous Microbial Populations In The In-Situ Remediation Of Weathered Oil In A Coastal Freshwater Habitat, Kyle Alan Schmidt
LSU Master's Theses
Use of bioremedial technologies has gained popularity in recent decades for application at oil spill sites. While much research has been done on specific case studies along marine shores, such as with the spill of the Exxon Valdez, there still remain questions as to the advantage of active biological treatment vs. natural attenuation in freshwater environments. To examine this question, a comparative study of allochthonous and autochthonous microbial communities ability to degrade weathered oil residuals was implemented at the CITGO Petroleum Refinery in Lake Charles, Louisiana following a spill of approximately 40,000 barrels of slop oil on June 19th, 2006 …