Current Search: Bioremediation (x)
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(1 - 8 of 8)
- Title
- Bioremoval of toxic elements with aquatic plants and algae.
- Creator
- Wang, Tsen C., Weissman, J. C., Ramesh, G., Varadarajan, R., Benemann, J. R.
- Date Issued
- 1995
- PURL
- http://purl.flvc.org/fau/fd/FA00007265
- Subject Headings
- Bioremediation, Heavy metals, Algae, Aquatic plants
- Format
- Document (PDF)
- Title
- Are filtration rates for the rough tunicate Styela plicata independent of weight or size?.
- Creator
- Draughon, Lisa D., Scarpa, John, Hartmann, James X.
- Date Issued
- 2010
- PURL
- http://purl.flvc.org/FCLA/DT/3352943
- Subject Headings
- Filtration, Tunicata, Styela, Bioremediation, Estuaries, Microalgae, Bacteria
- Format
- Document (PDF)
- Title
- Potential estuarine water quality improvement via marine invertebrate bioremediation.
- Creator
- Draughon, Lisa D., Scarpa, John, Keating, Patricia, Hartmann, James X.
- Date Issued
- 2008
- PURL
- http://purl.flvc.org/fau/fd/FA00007399
- Subject Headings
- Estuaries, Water quality, Marine invertebrates, Bioremediation
- Format
- Document (PDF)
- Title
- Heavy Metal Binding and Removal by Phormidium.
- Creator
- Wang, Tsen C., Weissman, J. C., Ramesh, G., Varadarajan, R., Benemann, J. R., Harbor Branch Oceanographic Institute
- Date Issued
- 1998
- PURL
- http://purl.flvc.org/FCLA/DT/3176821
- Subject Headings
- Heavy metals--Absorption and adsorption, Bioremediation, Microalgae
- Format
- Document (PDF)
- Title
- PHOSPHORUS SEQUESTRATION AND BIOREMEDIATION: PHOSPHORUS-31 NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY.
- Creator
- Duersch, Bobby G., Louda, J. William, Florida Atlantic University, Department of Chemistry and Biochemistry, Charles E. Schmidt College of Science
- Abstract/Description
-
Eutrophication is an increase in primary plant nutrients (Nitrogen [N] and Phosphorus [P]) in oceans, estuaries and lakes. The consequences of eutrophication are harmful algal blooms (HABs), resulting in algal toxin production and the depletion of oxygen as the extensive biomass decays. P is often the limiting nutrient and is viewed as a significant environmental problem. Most of the excess P that enters aquatic ecosystems originates from anthropogenic sources such as fertilizers, sewage,...
Show moreEutrophication is an increase in primary plant nutrients (Nitrogen [N] and Phosphorus [P]) in oceans, estuaries and lakes. The consequences of eutrophication are harmful algal blooms (HABs), resulting in algal toxin production and the depletion of oxygen as the extensive biomass decays. P is often the limiting nutrient and is viewed as a significant environmental problem. Most of the excess P that enters aquatic ecosystems originates from anthropogenic sources such as fertilizers, sewage, animal wastes, compost, crop residues, and wastewater. Over time, one of the main reservoirs of P becomes organic P (Po). We investigated the chemical nature and dynamics of P in cyanobacteria, horse manure, stormwater treatment areas, and rice fields. To better understand the chemical nature of P, the identification of specific P compounds was required, which was achieved through 31P nuclear magnetic resonance (NMR) spectroscopy. We investigated how paramagnetic metals and quadrupolar nuclei cause severe line broadening, peak shifts, and decreased the signal to noise ratio. Results revealed that certain Po forms are readily bioavailable to Microcystis aeruginosa. Additionally, the potential heterotrophic use of the organic portion (e.g., glucose, glycerol) of these P compounds are indicated for the growth and persistence of Microcystis aeruginosa. We showed that the cultivation of rice (Oryza sativa L.) had been found to effectively reduce P from agrarian soil and water through plant uptake and, therefore, minimizing downstream eutrophication. Soil, water, sugarcane, and rice plants at two different stages were analyzed for twelve different elements. Finally, we examined how a “relic” agrarian ditch in Stormwater Treatment Area 1 East (STA-1E) can be used for the retention and sequestration of P and other nutrients. The STAs were established to capture P from agricultural and other sources before reaching the Everglades. Retained P is primarily stored in the wetland soils and sediments, generated through a collection of interrelated physical, chemical, and biological processes.
Show less - Date Issued
- 2020
- PURL
- http://purl.flvc.org/fau/fd/FA00013594
- Subject Headings
- Nuclear magnetic resonance spectroscopy, Eutrophication, Phosphorus--Environmental aspects, Bioremediation
- Format
- Document (PDF)
- Title
- Heavy metals removal by a promising locally available aquatic plant, Najas graminea del., in Taiwan.
- Creator
- Lee, C.-L., Wang, Tsen C., Lin, C-K., Mok, Hin-Kiu, Harbor Branch Oceanographic Institute
- Date Issued
- 1999
- PURL
- http://purl.flvc.org/FCLA/DT/3172963
- Subject Headings
- Heavy metals, Heavy metals --Environmental aspects, Bioremediation, Aquatic plants, Green technology
- Format
- Document (PDF)
- Title
- The ascidian Styela plicata as a potential bioremediator of bacterial and algal contamination of marine estuarine waters.
- Creator
- Draughon, Lisa D., Charles E. Schmidt College of Science, Department of Biological Sciences
- Abstract/Description
-
The tunicate Styela plicata (Ascidiacea) was investigated for its potential use in bioremediation of bacteria and microalgae blooms from estuarine waters. Salinity tolerances, filtration rate, substrate selection, and effects on digested bacteria and ichthyofaunal communities were examined. If acclimated slowly, Styela can be placed in salinities as low as 24 parts per thousand (ppt) before increased fatalities result. An immediate decrease in salinity from 32 ppt to 20 ppt was not...
Show moreThe tunicate Styela plicata (Ascidiacea) was investigated for its potential use in bioremediation of bacteria and microalgae blooms from estuarine waters. Salinity tolerances, filtration rate, substrate selection, and effects on digested bacteria and ichthyofaunal communities were examined. If acclimated slowly, Styela can be placed in salinities as low as 24 parts per thousand (ppt) before increased fatalities result. An immediate decrease in salinity from 32 ppt to 20 ppt was not detrimental at short term exposure (four days). One average-sized (~40g) Styela, exposed to 105 and 106 bacteria or microalgae mL-1, can filter as much as 4.7 L hr-1 and 3.3 L hr-1, respectively. Individual tunicate filtration rates varied from hour to hour, independent of organism size, indicating that filtration rates for this species would be better reported on a population basis rather than on an individual weight or size basis. Bacterial viability in tunicate feces was assessed by ATP analysis. Bacteria were found to be non-viable after passage through the tunicate digestive tract. Filtration of eggs or larvae of recreationally or commercially important fish is of concern. The smallest eggs (~0.6mm) reported in the Indian River Lagoon belong to Cynoscion nebulosus (spotted seatrout) and Bairdiella chrysoura (silver perch). Over the course of two hours, 72.5% of 0.5 mm glass beads (simulated fish eggs) were initially retained, but many were later expelled by the tunicates. For 1.0 mm beads, 49.4% were initially retained and for 2.0 mm beads, 43.5% were initially retained. Neither the size of the oral siphon nor the size of the overall animal was correlated to bead retention. Substrate selection was investigated using the tunicate Phallusia nigra., Newly hatched larvae preferred settling on wood (53.7%), as compared to polyethylene (30.9%), high-density polyethylene (13.0%), and polyvinyl chloride (2.4%). Overall, results of this study indicate S. plicata is very effective at removing bacteria and microalgae from estuarine waters. However, further testing is warranted regarding the unwanted removal of fish eggs and larvae before utilization of S. plicata for bioremedial purposes.
Show less - Date Issued
- 2010
- PURL
- http://purl.flvc.org/FAU/1927312
- Subject Headings
- Marine bioremediation, Estuarine ecology, Water quality management, Water quality biological assessment
- Format
- Document (PDF)
- Title
- The Ascidian Styela plicata As a Potential Bioremediator of the Brown Tide Pelagophytes Aureoumbra lagunensis and Aureococcus anophagefferens.
- Creator
- Klarmann, Phyllis A., Hartmann, James X., Florida Atlantic University, Charles E. Schmidt College of Science, Department of Biological Sciences
- Abstract/Description
-
A brown tide bloom of the pelagophyte Aureoumbra lagunensis caused significant impacts to north Indian River Lagoon (IRL) in 2012-2013, including seagrass die-offs, fish kills, and reduced growth and grazing of ecologically important bivalves. There is potential for another pelagophyte, Aureococcus anophagefferens, to expand into this system. Filtration rates (FR) of the pleated tunicate Styela plicata exposed to Aureoumbra lagunensis and Aureococcus anophagefferens were measured against...
Show moreA brown tide bloom of the pelagophyte Aureoumbra lagunensis caused significant impacts to north Indian River Lagoon (IRL) in 2012-2013, including seagrass die-offs, fish kills, and reduced growth and grazing of ecologically important bivalves. There is potential for another pelagophyte, Aureococcus anophagefferens, to expand into this system. Filtration rates (FR) of the pleated tunicate Styela plicata exposed to Aureoumbra lagunensis and Aureococcus anophagefferens were measured against exposure to a control alga (Tisochrysis lutea) in order to determine its potential use as a bioremediator against these harmful algal blooms (HABs). In addition, whether S. plicata might serve as a vector of HABs was studied by culturing fecal deposits. Short-term exposure to HABs significantly reduced FR, whereas long-term exposure indicates comparable cell removal compared to the control. Vector potential of S. plicata was inconclusive. Results warrant further research to determine whether S. plicata can acclimate or respond to HAB conditions over time.
Show less - Date Issued
- 2015
- PURL
- http://purl.flvc.org/fau/fd/FA00004513
- Subject Headings
- Algal blooms -- Florida -- Indian River Lagoon, Cyanobacterial blooms -- Toxicology, Estuarine ecology, Indian River Lagoon (Fla.) -- Environmental aspects, Marine bioremediation, Marine ecology, Marine pollution, Water quality biological assessment
- Format
- Document (PDF)
