Title:
FORWARD OSMOSIS PROCESS FOR CONCENTRATION OF LITHIUM CONTAINING SOLUTIONS
Document Type and Number:
WIPO Patent Application WO/2016/064689
Kind Code:
A3
Abstract:
A forward osmosis process for concentration of lithium-containing salt solutions is described. A difference in osmotic pressure between a lithium-containing salt solution and a second salt solution of higher osmotic pressure is used as a driving force to pass water through a semi-permeable forward osmosis membrane from said lithium-containing salt solution of lower osmotic pressure to the salt solution of higher osmotic pressure. Also, a two-part operation is described wherein reverse osmosis process technology and forward osmosis process technology are used in tandem to concentrate lithium-containing salt solutions and to recover water that can be recycled to the process. The forward osmosis process is conducted without requiring (i) use of superatmospheric pressure or (ii) use of subatmospheric pressure or (iii) use of both such pressures, or (iv) use of one or more additives to assist in causing the flow of water through a forward osmosis membrane.
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Inventors:
SWITZER JACKSON R (US)
COLONIUS NEAL J (US)
CHENG CHI HUNG (US)
DAUDEY PIETER JOHANNES (NL)
COLONIUS NEAL J (US)
CHENG CHI HUNG (US)
DAUDEY PIETER JOHANNES (NL)
Application Number:
PCT/US2015/056090
Publication Date:
July 28, 2016
Filing Date:
October 16, 2015
Export Citation:
Assignee:
ALBEMARLE CORP (US)
International Classes:
C02F1/44; B01D61/00; B01D61/02; C01D15/00; C02F103/02; C02F103/10
Foreign References:
| CN103182246A | 2013-07-03 | |||
| US20120267307A1 | 2012-10-25 | |||
| US20110036774A1 | 2011-02-17 | |||
| US20070278153A1 | 2007-12-06 | |||
| US20130048564A1 | 2013-02-28 |
Attorney, Agent or Firm:
HOEFLING, Marcy M. et al. (Law Department451 Florida Stree, Baton Rouge LA, US)
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