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Title: Energy requirements of the switchable polarity solvent forward osmosis (SPS-FO) water purification process

Journal Article · · Desalination
 [1];  [1];  [1];  [1]
  1. Idaho National Lab. (INL), Idaho Falls, ID (United States)
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A model was developed to estimate the process energy requirements of a switchable polarity solvent forward osmosis (SPS FO) system for water purification from aqueous NaCl feed solution concentrations ranging from 0.5 to 4.0 molal at an operational scale of 480 m3/day (feed stream). The model indicates recovering approximately 90% of the water from a feed solution with NaCl concentration similar to seawater using SPS FO would have total equivalent energy requirements between 2.4 and 4.3 kWh per m3 of purified water product. The process is predicted to be competitive with current costs for disposal/treatment of produced water from oil and gas drilling operations. As a result, once scaled up the SPS FO process may be a thermally driven desalination process that can compete with the cost of seawater reverse osmosis.

Research Organization:
Idaho National Lab. (INL), Idaho Falls, ID (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Renewable Power Office. Geothermal Technologies Office
Grant/Contract Number:
AC07-05ID14517
OSTI ID:
1251602
Alternate ID(s):
OSTI ID: 1246661
Report Number(s):
INL/JOU-15-34462; PII: S0011916415300205
Journal Information:
Desalination, Vol. 374, Issue C; ISSN 0011-9164
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 23 works
Citation information provided by
Web of Science

References (20)

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Switchable polarity solvents as draw solutes for forward osmosis journal March 2013
A novel ammonia—carbon dioxide forward (direct) osmosis desalination process journal April 2005
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Smart draw agents for emerging forward osmosis application journal January 2013
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Thermo-responsive copolymers with ionic group as novel draw solutes for forward osmosis processes journal September 2014
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Performance evaluation of trimethylamine–carbon dioxide thermolytic draw solution for engineered osmosis journal January 2015
Structure–function study of tertiary amines as switchable polarity solvents journal January 2014
Concentration dependent speciation and mass transport properties of switchable polarity solvents journal January 2015
1-Cyclohexylpiperidine as a thermolytic draw solute for osmotically driven membrane processes journal September 2015
Density Functional Theory Analysis of the Impact of Steric Interaction on the Function of Switchable Polarity Solvents journal April 2015
Energy requirements of ammonia–carbon dioxide forward osmosis desalination journal March 2007
Deriving osmotic pressures of draw solutes used in osmotically driven membrane processes journal March 2013
Energy consumption and water production cost of conventional and renewable-energy-powered desalination processes journal August 2013
Thermodynamic analysis of energy density in pressure retarded osmosis: The impact of solution volumes and costs journal August 2015
Pilot demonstration of the NH3/CO2 forward osmosis desalination process on high salinity brines journal March 2013

Cited By (2)

Diamines as switchable-hydrophilicity solvents with improved phase behaviour journal January 2018
Recent Advance on Draw Solutes Development in Forward Osmosis journal September 2018

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Related Subjects

15 GEOTHERMAL ENERGY
99 GENERAL AND MISCELLANEOUS
forward osmosis
draw solute
switchable polarity solvent
process energy model