Journal of Membrane Science | VOL. 495
Read

Flux stabilization in membrane distillation desalination of seawater and brine using corrugated PVDF membranes

Publication Date Dec 1, 2015

Abstract

Abstract Due to its tolerance of high salinities, membrane distillation (MD) is promoted for desalination of challenging high salinity seawater and for brine recovery and reduction in seawater desalination plants. In these applications, fouling of MD has recently been shown to become more pronounced, although much less than for reverse osmosis. In this study, a two-layer corrugated composite flat sheet polyvinylidenefluoride (PVDF) membrane was fabricated, characterized and tested in a lab-scale direct contact MD (DCMD) system for improved flux stabilization. The first membrane layer was used to control the pore size while the second was devoted for formation of surface corrugation and enhancing hydrophobicity. Tested using seawater and concentrated brine against a non-corrugated composite membrane, the corrugated composite membrane showed much higher flux stability identified by only 10.7% reduction in permeate flux after 103 h of operation, compared to 66.6% reduction for the non-corrugated membrane. DCMD experiment with concentrated brine proved the effectiveness of corrugations even at high brine concentrations, where the corrugated membrane performed as well as it did with seawater, while the non-corrugated membrane showed even worse performance reaching almost zero flux after 93 h of operation. SEM images of the post-MD membranes also confirmed the advantage of corrugations over the flat surface, where the corrugated membrane experienced small amount of salts deposition leaving most of the membrane pores open while the...

Concepts
Powered ByUnsilo

Direct Contact Membrane Distillation Experiment
Flux Stabilization
Direct Contact Membrane Distillation
Membrane Distillation
Seawater Desalination Plants
Concentrated Brine
Salt Depositions
Formation Of Corrugation
Membrane Layer
Desalination Of Brine

Introducing Weekly Round-ups!Beta

Powered by R DiscoveryR Discovery

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 Aug 08, 2022 to Aug 14, 2022

R DiscoveryAug 15, 2022
R DiscoveryArticles Included:  5

Introduction: There is no consensus on the policies that should be seen as implicitly pricing carbon (see World Bank (2019a) for a discussion). The OE...

Read More

Gender Equality Research Articles published between Aug 08, 2022 to Aug 14, 2022

R DiscoveryAug 15, 2022
R DiscoveryArticles Included:  4

I would like to thank Anna Khakee, Federica Zardo and Ragnar Weilandt for their very useful comments as well as the participants of the workshop of 21...

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.