Impacts of Operating Conditions and Solution Chemistry on Osmotic Membrane Structure and Performance.

ABSTRACT: Herein, we report on changes in the performance of a commercial cellulose triacetate (CTA) membrane, imparted by varied operating conditions and solution chemistries. Changes to feed and draw solution flow rate did not significantly alter the CTA membrane's water permeability, salt permeability, or membrane structural parameter when operated with the membrane skin layer facing the draw solution (PRO-mode). However, water and salt permeability increased with increasing feed or draw solution temperature, while the membrane structural parameter decreased with increasing draw solution, possibly due to changes in polymer intermolecular interactions. High ionic strength draw solutions may de-swell the CTA membrane via charge neutralization, which resulted in lower water permeability, higher salt

SUBMITTER: Wong MCY 

PROVIDER: S-EPMC10488971 | biostudies-literature | 2012 Feb

REPOSITORIES: biostudies-literature