Method of reverse osmosis employing an improved porous glass mem

Liquid purification or separation – Processes – Liquid/liquid solvent or colloidal extraction or diffusing...

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

2105002, B01D 1300

Patent

active

044734760

ABSTRACT:
A porous glass membrane for reverse osmosis desalination of salt water is made by heating a membrane of a sodium-boron-alumino silicate glass so that it separates into two inter-connecting phases, removing one phase to make the membrane porous, and then coating the pores with a metal oxide to modify the pore size distribution and strengthen the membrane to enable it to withstand the high pressure applied in the reverse osmosis process. The porous glass is first treated with a volatile metal chloride such as titanium chloride, and the resulting surface layer is hydrolyzed to produce the metal oxide coating. A further reduction in pore size with an accompanying increase in strength can be made by partially sintering the treated membrane.

REFERENCES:
patent: 3926799 (1975-12-01), Thomas et al.
patent: 3972721 (1976-10-01), Hammel et al.
Marcinkowsky et al., "Hyperfiltration Studies . . . Oxide Membranes", from J. Am. Chem. Soc., 88:24, 12-66, pp. 5744-5746.
Ceramic Bulletin, vol. 57, No. 11, Nov. 1978, T. H. Elmer, Evaluation of Porous Glass as Desalination Membrane, pp. 1051-1054.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Method of reverse osmosis employing an improved porous glass mem does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of reverse osmosis employing an improved porous glass mem, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of reverse osmosis employing an improved porous glass mem will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1768746

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.