Underwater life support based on immobilized oxygen carriers |
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Authors: | Celia Bonaventura Joseph Bonaventura Irving R Hooper Todd Marshall |
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Institution: | (1) Marine Biomedical Center, Duke University Marine Laboratory, 28516 Beaufort, NC, USA |
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Abstract: | One of the primary problems that hinders humans in their efforts to explore and develop the ocean realms is the lack of a
ready supply of oxygen. Practical methods have not yet been devised for using the vast amount of oxygen dissolved in ocean
waters for human life support in an undersea environment. Fish and other water-breathing animals have solved this problem
by utilizing hemoglobin as a molecular oxygen pump. To achieve a similar oxygen extraction capability, we have explored various
methods of oxygen extraction that are based on immobilized forms of hemoglobin. Improved methods for immobilizing hemoglobin
or other oxygen carrying molecules and a method for extracting the available dissolved oxygen from natural waters and other
fluids are described. The techniques that have been developed allow for immobilization of oxygen carriers at high concentration
in a state where they are capable of reversible oxygen binding, and also allow for regeneration of the carrier in the event
of oxidation of the oxygen-binding site. |
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Keywords: | Underwater life support with immobilized O2 carriers immo-bilized oxygen carriers for underwater life support oxygen carriers immobilized carriers immobilized oxygen |
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