Liquid purification or separation – With alarm – indicator – register – recorder – signal or... – Responsive to fluid flow
Patent
1977-02-28
1978-06-13
Hart, Charles N.
Liquid purification or separation
With alarm, indicator, register, recorder, signal or...
Responsive to fluid flow
210321B, B01D 1300
Patent
active
040947750
ABSTRACT:
The improved hemodialysis system utilizes a second polymeric membrane having dialyzate in contact with one surface and a urea decomposition solution in contact with the other surface. The membrane selectively passes urea from the dialyzate into the decomposition solution, while preventing passage of positively charged metal ions from the dialyzate into the solution and ammonium ions from the solution into the dialyzate.
REFERENCES:
patent: 3608729 (1971-09-01), Haselden
patent: 3617545 (1971-11-01), Dubois
patent: 3669880 (1972-06-01), Marantz et al.
patent: 3703959 (1972-11-01), Raymond
patent: 3994799 (1976-11-01), Yao et al.
California Institute of Technology
Cross E. Rollins
Hart Charles N.
Jacobs Marvin E.
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