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Direct and Indirect Seawater Desalination by Forward Osmosis

Zhenyu Li, Rodrigo Valladares Linares, Sarper Sarp Orcid Logo, Gary Amy

Membrane-Based Salinity Gradient Processes for Water Treatment and Power Generation, Pages: 245 - 272

Swansea University Author: Sarper Sarp Orcid Logo

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DOI (Published version): 10.1016/B978-0-444-63961-5.00009-2

Abstract

Forward osmosis (FO) is an emerging membrane technology with a range of possible water treatment applications including desalination. The FO process itself can directly desalt seawater as a feed solution by employing a draw solution with higher osmotic pressure than seawater. However, the energetics...

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Published in: Membrane-Based Salinity Gradient Processes for Water Treatment and Power Generation
ISBN: 9780444639615
Published: Elsevier 2018
URI: https://cronfa.swan.ac.uk/Record/cronfa44630
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first_indexed 2018-09-26T18:58:33Z
last_indexed 2019-07-29T16:13:47Z
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spelling 2019-07-29T14:41:16.9528795 v2 44630 2018-09-26 Direct and Indirect Seawater Desalination by Forward Osmosis ca341f0a3e516f888e12d2710d06e043 0000-0003-3866-1026 Sarper Sarp Sarper Sarp true false 2018-09-26 CHEG Forward osmosis (FO) is an emerging membrane technology with a range of possible water treatment applications including desalination. The FO process itself can directly desalt seawater as a feed solution by employing a draw solution with higher osmotic pressure than seawater. However, the energetics of product water recovery and draw solution reuse is not favorable. Alternatively, the FO process using seawater as a natural draw solution and quality-impaired water as the feed can potentially couple with low-pressure reverse osmosis as a hybrid to be a lower-energy desalination process, in which indirect desalination is achieved. Most organic fouling in FO desalination process is reversible. However, the mechanism of scaling formation in FO desalination is more complicated than the conventional RO process. Both feed and draw solution can influence the scaling formation and its reversibility. The economic feasibility of FO desalination process depends on the operational mode (direct and indirect) as well as the plant scale and level of commercialization. Although there are still some choke points in the current deployment of FO desalination, the future development of efficient draw solution and novel FO membrane will significantly promote FO desalination technology. Book chapter Membrane-Based Salinity Gradient Processes for Water Treatment and Power Generation 245 272 Elsevier 9780444639615 Forward osmosis, desalination, fouling and cleaning, economic feasibility 31 12 2018 2018-12-31 10.1016/B978-0-444-63961-5.00009-2 COLLEGE NANME Chemical Engineering COLLEGE CODE CHEG Swansea University 2019-07-29T14:41:16.9528795 2018-09-26T13:46:57.9226860 Faculty of Science and Engineering School of Engineering and Applied Sciences - Chemical Engineering Zhenyu Li 1 Rodrigo Valladares Linares 2 Sarper Sarp 0000-0003-3866-1026 3 Gary Amy 4
title Direct and Indirect Seawater Desalination by Forward Osmosis
spellingShingle Direct and Indirect Seawater Desalination by Forward Osmosis
Sarper Sarp
title_short Direct and Indirect Seawater Desalination by Forward Osmosis
title_full Direct and Indirect Seawater Desalination by Forward Osmosis
title_fullStr Direct and Indirect Seawater Desalination by Forward Osmosis
title_full_unstemmed Direct and Indirect Seawater Desalination by Forward Osmosis
title_sort Direct and Indirect Seawater Desalination by Forward Osmosis
author_id_str_mv ca341f0a3e516f888e12d2710d06e043
author_id_fullname_str_mv ca341f0a3e516f888e12d2710d06e043_***_Sarper Sarp
author Sarper Sarp
author2 Zhenyu Li
Rodrigo Valladares Linares
Sarper Sarp
Gary Amy
format Book chapter
container_title Membrane-Based Salinity Gradient Processes for Water Treatment and Power Generation
container_start_page 245
publishDate 2018
institution Swansea University
isbn 9780444639615
doi_str_mv 10.1016/B978-0-444-63961-5.00009-2
publisher Elsevier
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Engineering and Applied Sciences - Chemical Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Chemical Engineering
document_store_str 0
active_str 0
description Forward osmosis (FO) is an emerging membrane technology with a range of possible water treatment applications including desalination. The FO process itself can directly desalt seawater as a feed solution by employing a draw solution with higher osmotic pressure than seawater. However, the energetics of product water recovery and draw solution reuse is not favorable. Alternatively, the FO process using seawater as a natural draw solution and quality-impaired water as the feed can potentially couple with low-pressure reverse osmosis as a hybrid to be a lower-energy desalination process, in which indirect desalination is achieved. Most organic fouling in FO desalination process is reversible. However, the mechanism of scaling formation in FO desalination is more complicated than the conventional RO process. Both feed and draw solution can influence the scaling formation and its reversibility. The economic feasibility of FO desalination process depends on the operational mode (direct and indirect) as well as the plant scale and level of commercialization. Although there are still some choke points in the current deployment of FO desalination, the future development of efficient draw solution and novel FO membrane will significantly promote FO desalination technology.
published_date 2018-12-31T03:55:56Z
_version_ 1763752810840588288
score 11.036815

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