Temperature-controlled enhancement of oxygen uptake from water using oxygen carrier solution

Rearrangement of hollow fibers for enhancing oxygen transfer in an artificial gill using oxygen carrier solution

“…When the mass transfer coefficient outside of the hollow fibers was measured, water was made to flow outside them at flow rates of 4.20-117 cm 3 /s with a rotary pump (MBP107, Senko Medical Instrument Mfg., Tokyo), and nitrogen gas flowed inside the hollow fibers at a rate of 5.00 cm 3 /s. Under these conditions, the water-side (liquid side) resistance limits the oxygen transfer across the membrane [7]. The temperature of the flowing water was maintained at 293 K. The oxygen partial pressure in water at the module inlet and outlet was measured using the dissolved oxygen meter, which is equipped with a blood gas analyzer (860 W, Bayer Medical, Tokyo).…”

“…Taking a different tack, several researchers developed artificial gills using oxygen carrier solutions [6][7][8][9]. These artificial gills consist of two hollow fiber modules and an oxygen carrier solution such as perfluorooctylbromide [6], a red blood cell suspension [7], a concentrated hemoglobin solution [8,9] or a molybdenum porphyrin solution [10].…”

“…These artificial gills consist of two hollow fiber modules and an oxygen carrier solution such as perfluorooctylbromide [6], a red blood cell suspension [7], a concentrated hemoglobin solution [8,9] or a molybdenum porphyrin solution [10]. In these systems, oxygen dissolved in water was taken up from water into an oxygen carrier solution through a membrane module (oxygen uptake module), then oxygen was released from the oxygen carrier solution to inspired air through another membrane module (oxygen release mod- ule).…”

“…In these systems, oxygen dissolved in water was taken up from water into an oxygen carrier solution through a membrane module (oxygen uptake module), then oxygen was released from the oxygen carrier solution to inspired air through another membrane module (oxygen release mod- ule). The oxygen carrier solution functioned as an oxygen storage tank [6], a thermo-responsive oxygen absorbent [7][8][9], or a photoresponsive oxygen absorbent [10]. Oxygen transfer from water was enhanced using this system.…”