Novel reverse osmosis membranes composed of modified PVA/Gum Arabic conjugates: Biofouling mitigation and chlorine resistance enhancement.

Carbohydr Polym

School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA; G.W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA. Electronic address:

Published: January 2017

AI Article Synopsis

  • A novel crosslinked Poly (vinyl alcohol) (PVA) membrane enhanced with Gum Arabic (GA) was developed for effective water desalination using reverse osmosis (RO) technology.
  • Incorporating Pluronic F127 and Gum Arabic significantly improved key performance metrics like water permeability, salt rejection, and resistance to chlorine and biofouling.
  • The PVA-GA-5 membrane, containing 0.9wt% Gum Arabic, excelled in multiple performance areas and successfully functioned without a substrate, avoiding issues like internal concentration polarization that typically degrade membrane efficiency.

Article Abstract

A novel crosslinked Poly (vinyl alcohol) (PVA) reverse osmosis (RO) thin film membrane conjugated with Gum Arabic (GA) with superb performance and features was synthesized for water desalination. RO membrane desalination parameters, such as hydrophilicity, surface roughness, water permeability, salt rejection, Chlorine resistance and biofouling resistance were evaluated using a dead end RO filtration unit. The incorporation of Pluronic F127 and the conjugation of Gum Arabic improved the overall RO performance of the membranes. This study has shown that the membrane PVA-GA-5 that contains 0.9wt% Gum Arabic provided excellent permeation, salt rejection, Chlorine and biofouling resistance and mechanical strength. The most remarkable result to arise from this research is that the overall RO performance enhancement has been achieved while utilizing PVA/Gum Arabic as a separation layer without the use of a substrate, which eliminates negative effects associated with the use of a substrate like internal concentration polarization.

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.carbpol.2016.08.058DOI Listing

Publication Analysis

Top Keywords

gum arabic
12
reverse osmosis
8
pva/gum arabic
8
chlorine resistance
8
salt rejection
8
rejection chlorine
8
biofouling resistance
8
arabic
5
novel reverse
4
osmosis membranes
4

Similar Publications

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!