Bioremediation of aqueous pollutants using biomass embedded in hydrophilic foam. Final report

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Description

The major objective of this project was to examine the potential of a novel hydrophilic polyurethane foam as an immobilization medium for algal, bacteria, and other types of biomass, and to test the resulting foam/biomass aggregates for their use in cleaning up waters contaminated with heavy metals, radionuclides and toxic organic compounds. Initial investigations focused on the bioremoval of heavy metals from wastewaters at SRS using immobilized algal biomass. This effort met with limited success for reasons which included interference in the binding of biomass and target metals by various non-target constituents in the wastewater, lack of an appropriate wastewater ... continued below

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261 p.

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Wilde, E. W.; Radway, J. C.; Santo Domingo, J.; Zingmark, R. G. & Whitaker, M. J. December 31, 1996.

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Description

The major objective of this project was to examine the potential of a novel hydrophilic polyurethane foam as an immobilization medium for algal, bacteria, and other types of biomass, and to test the resulting foam/biomass aggregates for their use in cleaning up waters contaminated with heavy metals, radionuclides and toxic organic compounds. Initial investigations focused on the bioremoval of heavy metals from wastewaters at SRS using immobilized algal biomass. This effort met with limited success for reasons which included interference in the binding of biomass and target metals by various non-target constituents in the wastewater, lack of an appropriate wastewater at SRS for testing, and the unavailability of bioreactor systems capable of optimizing contact of target pollutants with sufficient biomass binding sites. Subsequent studies comparing algal, bacterial, fungal, and higher plant biomass demonstrated that other biomass sources were also ineffective for metal bioremoval under the test conditions. Radionuclide bioremoval using a Tc-99 source provided more promising results than the metal removal studies with the various types of biomass, and indicated that the alga Cyanidium was the best of the tested sources of biomass for this application. However, all of the biomass/foam aggregates tested were substantially inferior to a TEVA resin for removing Tc-99 in comparative testing. The authors also explored the use of hydrophilic polyurethane foam to embed Burkholderia cepacia, which is an efficient degrader of trichloroethylene (TCE), a contaminant of considerable concern at SRS and elsewhere. The embedded population proved to be incapable of growth on nutrient media, but retained respiratory activity. Lastly, the degradative capabilities of embedded G4 were examined. Phenol- or benzene-induced bacteria retained the ability to degrade TCE and benzene. The authors were successful in inducing enzyme activity after the organisms had already been embedded.

Physical Description

261 p.

Notes

INIS; OSTI as DE97060180

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  • Other Information: DN: TTP No. SR-16-PL-42

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  • Other: DE97060180
  • Report No.: WSRC-TR--96-0088
  • Grant Number: AC09-89SR18035
  • DOI: 10.2172/495736 | External Link
  • Office of Scientific & Technical Information Report Number: 495736
  • Archival Resource Key: ark:/67531/metadc687143

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  • December 31, 1996

Added to The UNT Digital Library

  • July 25, 2015, 2:21 a.m.

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  • Oct. 3, 2017, 1:05 p.m.

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Wilde, E. W.; Radway, J. C.; Santo Domingo, J.; Zingmark, R. G. & Whitaker, M. J. Bioremediation of aqueous pollutants using biomass embedded in hydrophilic foam. Final report, report, December 31, 1996; Aiken, South Carolina. (digital.library.unt.edu/ark:/67531/metadc687143/: accessed December 14, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.