Journal of Membrane Science | VOL. 541
Read

Energy-efficient hybrid FCDI-NF desalination process with tunable salt rejection and high water recovery

Publication Date Nov 1, 2017

Abstract

Seawater and brackish water constitute ~97% of the water on Earth. Therefore, future water shortages could be alleviated if we develop more efficient and cost-effective desalination technologies. Reverse osmosis (RO) has been established as the best available technology for commercial seawater (SW) desalination during the last two decades. Because the standard SWRO membrane element is designed to achieve a very high salt (NaCl) rejection (>99%) with a low water recovery (~15%), current SWRO desalination plant design is based on the staging of arrays of RO membrane elements to achieve an overall water recovery of ~50% with an energy consumption of 3–4 kWh per m3 of water treated. Moreover, SWRO desalination plants generate substantial amounts of brines that must be disposed of. In addition, SWRO desalination plants require post-treatment including remineralization. Here, we report an energy-efficient hybrid desalination process for high salinity brackish water. This new desalination process couples flow capacitive deionization (FCDI) with nanofiltration (NF). Our experiments and energy calculations using a 10000 ppm NaCl solution as model brackish water show that the energy consumption of the new FCDI-NF unit (0.460 kWh_total m^(−3)) is lower by 16–20% than the best reported energy consumption (0.571 kWh m^(−3)) and the 1-stage practical minimum energy consumption (0.550 kWh m^(−3)) of a brackish water reverse osmosis (BWRO) unit treating the same feed at 70% water recovery, while final total dissolved solids (TDS) are in the...

Concepts

SWRO Desalination Plants Water Recovery Brackish Water Brackish Water Reverse Osmosis Low Water Recovery Desalination Process Future Water Shortages High Water Recovery Total Dissolved Solids M3 Of Water

Round-ups are the summaries of handpicked papers around trending topics published every week. These would enable you to scan through a collection of papers and decide if the paper is relevant to you before actually investing time into reading it.

Climate change Research Articles published between Sep 19, 2022 to Sep 25, 2022

R DiscoverySep 26, 2022
R DiscoveryArticles Included:  5

Disaster Prevention and Management ISSN: 0965-3562 Article publication date: 20 September 2022 This paper applies the theory of cascading, interconnec...

Read More

Coronavirus Pandemic

You can also read COVID related content on R COVID-19

R ProductsCOVID-19

ONE PROBLEM . ONE PURPOSE . ONE PLACE

Creating the world’s largest AI-driven & human-curated collection of research, news, expert recommendations and educational resources on COVID-19

COVID-19 Dashboard

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on “as is” basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The Copyright Law.