Accession Number:

ADA222606

Title:

Development of Membrane Process for Carbon Dioxide Separation from Diving Atmosphere

Descriptive Note:

Contractor rept.

Corporate Author:

SYRACUSE UNIV NY DEPT OF CHEMICAL ENGINEERING AND MATERIALS SCIENCE

Personal Author(s):

Report Date:

1990-05-01

Pagination or Media Count:

84.0

Abstract:

Computer simulations have shown that membrane separation processes can be used effectively to remove Carbon dioxide 2 from exhaled air in an underwater breathing apparatus. Membrane separation processes are based on the selective permeation of the components of a gas mixture through nonporous polymer membranes. A permeator module provided with membranes in the form of asymmetric or composite hollow fibers is best suited for CO2 removal from exhaled air. The operation of such a permeator, designed to reduce the CO2 concentration in exhaled air from about 4 mole- to 1 mole-, has been simulated in order to determine its optimum dimensions and membrane are requirement. The exhaled air will flow in such a permeator in an axial direction inside the hollow fibers, while the external surface of the fibers will be in contact with sea water. The fraction of the exhaled air permeating through the hollow fibers the permeate will be enriched in CO2, which will be dissipated in the sea water. Keywords Membrane separation process, Diving, Computerized simulation, Hollow -fiber permeator modules, UBA, Marine atmospheres.

Subject Categories:

  • Inorganic Chemistry
  • Marine Engineering

Distribution Statement:

APPROVED FOR PUBLIC RELEASE