Microfiltration

Multi-photon microscopy, a fluorescence based technique, was used to image in-situ the fouling and cleaning of a 0.22 µm microfiltration membrane fouled by bovine serum albumin and ovalbumin. Imaging of the cleaning was possible for two of the three cleaning regimes used. The free chlorine cleaner b

Integration of membrane technology into a new method for a recirculating aquaculture system (RAS) was investigated. Main objectives were: at first to reduce the water consumption, but not to exceed the critical concentrations for fish toxic water ingredients (especially nitrite and ammonium or ammon

Microfiltration of yeast suspensions (Sacch. cerevisiae) was carried out to investigate the impact of a secondary membrane, composed of deposited yeast cells, on the filtration performance. Cross-flow filtration experiments with yeast–water suspensions in a rectangular channel showed the deposition

The advanced separation process for boron removal has been put forward by combining boron sorption on a fine powdered boron selective resin (BSR) with a complex separation on microfiltration membranes. The proposed membrane-based hybrid process integrates in one step sorption efficiency of the selec

The SAPO-5 zeolite-filled polyurethane membranes with perselectivity to the gases or liquids were prepared, characterized and utilized for the ultra- and, respectively, microfiltration (UF + MF) of synthetic wastewater containing colophony. The influence of the colloidal dispersion concentration on

The efficiency of crossflow microfiltration processes is limited by membrane fouling and concentration polarization leading to permeate flux decline during operation. The experiments that were carried out in the laboratory were conducted to determine and investigate the performance, behaviour and th

The objective of this study was to evaluate the effects of operating modes, membrane materials and pore size on natural organic matter (NOM) fouling. A range of flat sheet microfiltration (MF) and ultrafiltration (UF) membranes were tested under conditions of various constant pressure and constant f

Gas sparging and back-flushing treatments were compared as a means to tackle the problem of fouling in yeast microfiltration. Based on the feed and membrane characteristics, it was shown that either of these techniques could be superior to the other in order to overcome the problem. At more concentr

Major municipal wastewater reclamation plants in California, USA, Singapore, and many built or planned for other regions of the world use the high pathogen reduction properties of microfiltration/ultrafiltration (MF/UF) membranes followed by reverse osmosis (RO) membranes. Operational experiences in

Photo-initiated surface-selective graft copolymerisation onto polypropylene (PP) microfiltration membranes is an improved method to prepareporous membrane adsorbers . The method for preparing graft-copolymer based membrane adsorbers is successfully optimized via the combination functional, diluent a