Influence of simple pre-treatment methods on properties of membrane material

An experimental investigation into the pre-treatment of synthetic membranes using sodium hydroxide solutions

“…This can be extended beyond simple conditioning (which is needed to remove a preservative layer of glycerine which new polymeric membranes are typically coated with during manufacture) to form an anti-fouling pre-treatment strategy. Je _ zowska et al (2006) observed that a simple pre-treatment using a standard membrane cleaner gave a significant improvement in the permeate flux though it did not result in an improvement in the retention. Manufacturers have recommended that a pre-cleaning treatment consisting of a NaOH solution be applied to some classes of flat sheet polymeric membrane before feeds are filtered (Alfa Laval, 2009).…”

Downstream of downstream processing: development of recycling strategies for biopharmaceutical processes

“…The scalability is validated. Based on literature, recommendations of manufacturers and the experience reported by other researchers, the following methods were selected for pre‐treatment of membrane prior to initial use:75 pressurization (filtration of pure water at high pressure);76 cleaning with the commercial membrane cleaner P3‐Ultrasil ® 53;77 and cleaning with an iso‐propanol solution 78 …”

The Role of Synthetic Membrane Pre-Treatment in Influencing Filtration Performance over Multiple Operational Cycles

“…Nyströ m and Zhu (3), and Zhu and Nyströ m (4) found that cleaning the membrane before filtration can modify the separation process and the types of foulants subsequently attaching to the surface. Jeżowska et al (5) also observed that a simple pre-treatment using a standard membrane cleaner gave a significant improvement in the permeate flux. The concept of creating a beneficial fouling layer has also been reported (6).…”