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1. US20140158621 - Thermo-responsive draw solute for forward osmosis and method for water desalination and purification using the same

Office
United States of America
Application Number 14235192
Application Date 27.07.2012
Publication Number 20140158621
Publication Date 12.06.2014
Grant Number 09550728
Grant Date 24.01.2017
Publication Kind B2
IPC
B01D 11/00
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
11Solvent extraction
C02F 1/44
CCHEMISTRY; METALLURGY
02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
1Treatment of water, waste water, or sewage
44by dialysis, osmosis or reverse osmosis
B01D 61/00
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
61Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
B01D 61/24
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
61Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
24Dialysis
C07C 233/05
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
233Carboxylic acid amides
01having carbon atoms of carboxamide groups bound to hydrogen atoms or to acyclic carbon atoms
02having nitrogen atoms of carboxamide groups bound to hydrogen atoms or to carbon atoms of unsubstituted hydrocarbon radicals
04with carbon atoms of carboxamide groups bound to carbon atoms of an acyclic saturated carbon skeleton
05having the nitrogen atoms of the carboxamide groups bound to hydrogen atoms or to acyclic carbon atoms
C07C 233/36
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
233Carboxylic acid amides
01having carbon atoms of carboxamide groups bound to hydrogen atoms or to acyclic carbon atoms
34having the nitrogen atom of at least one of the carboxamide groups bound to a carbon atom of a hydrocarbon radical substituted by amino groups
35with the substituted hydrocarbon radical bound to the nitrogen atom of the carboxamide group by an acyclic carbon atom
36having the carbon atom of the carboxamide group bound to a hydrogen atom or to a carbon atom of an acyclic saturated carbon skeleton
CPC
B01D 61/002
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
61Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis, ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
002Forward osmosis, direct osmosis
B01D 61/005
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
61Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis, ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
002Forward osmosis, direct osmosis
005Osmotic agents, draw solutions
C02F 1/445
CCHEMISTRY; METALLURGY
02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
1Treatment of water, waste water, or sewage
44by dialysis, osmosis or reverse osmosis
445by forward osmosis
C02F 2103/08
CCHEMISTRY; METALLURGY
02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
2103Nature of the water, waste water, sewage or sludge to be treated
08Seawater, e.g. for desalination
C02F 2303/18
CCHEMISTRY; METALLURGY
02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
2303Specific treatment goals
18Removal of treatment agents after treatment
Y02A 20/131
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
20Water conservation; Efficient water supply; Efficient water use
124Water desalination
131Reverse-osmosis
Applicants Yan Lee
SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION
Minwoo Noh
Yeongbong Mok
Heejin Kim
Seonju Lee
Daichi Nakayama
Inventors Yan Lee
Minwoo Noh
Yeongbong Mok
Heejin Kim
Seonju Lee
Daichi Nakayama
Agents Duane Morris LLP
J. Rodman Steele, Jr.
Gregory M. Lefkowitz
Title
(EN) Thermo-responsive draw solute for forward osmosis and method for water desalination and purification using the same
Abstract
(EN)

The present invention relates to a thermo-responsive draw solute that can be applied to water desalination and purification based on forward osmosis. The thermo-responsive draw solute has a molar mass of 50 to 3000 g/mol and undergoes a phase transition at a temperature of 0° C. to 70° C. The thermo-responsive draw solute creates optimum conditions for the desalination of seawater and the purification of contaminated water based on forward osmosis. The present invention also relates to a method for water desalination and purification using the thermo-responsive draw solute. The method consumes little energy for water desalination or purification, is simple to apply to water desalination or purification, and enables separation of the draw solute in a very easy manner.

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