Microfiltration

The main purpose of this study is to evaluate a combined ozone and microfiltration (MF) membrane process as pre-treatment of a seawater reverse osmosis (SWRO) system. During the filtration of seawater (SW) with the MF membranes, membrane fouling on both hydrophilic (PHI) and hydrophobic (PHO) MF mem

This study focused on reducing membrane fouling by adding different adsorbents (powder activated carbon (PAC), zeolite) or coagulants (polyamide, polyaluminum chloride) in a microfiltration process treating anaerobic digestion effluent. The results indicated that the magnitude of fouling reduction w

The application of chitosan as the coagulant/flocculant in a microfiltration process of natural water has been evaluated. In order to study fouling effects, variations in permeation velocity of demineralized water were measured at the beginning and at the end of each microfiltration experiment. Expe

Membrane methods, including MF, UF and NF, belong to high-efficiency processes which can be competitive with traditional methods of water treatment. However, their efficiency can be affected by some parameters such as rejection and permeate flux. In this work, three membrane processes (MF, UF and NF

A simple semi-theoretical steady-state model for the convective flux in cross-flow microfiltration has been developed based on the mass balance. The model, which has two coefficients, A and K, can describes the cake increase on membrane surfaces in a hollow-fiber membrane module and predicts its mem

The characterization of the flow inside an experimental flat membrane module with a smooth rotating disk was performed. The module consists of a disk rotating at speeds up to 3000 rpm inside a cylindrical housing equipped with a stationary circular flat membrane. The characterization was carried out

Although submerged microfiltration is widely used as a pretreatment process for surface water treatment and RO desalination, its high energy consumption is a major drawback compared to conventional pretreatment. Especially, aeration during filtration is an energy-intensive step in most submerged mem

The characterization and application of cross-flow microfiltration (MF) process as a pre-treatment step and, partly in combination, with cross-flow ultra- (UF), and nanofiltration (NF) systems as final-treatment techniques for efficient treatment of oilfield produced water and different prepared mod

The effects of membrane pore size and operating conditions on the particle fouling in ‘‘dead-end’’ microfiltration are studied by use of membrane blocking models. Two track-etched membranes (Isopore1membrane) with the mean pore diameters of 0.2 and 0.4 mm, respectively, are used as the filter media

Nickel hollow fiber membranes were prepared by a phase inversion and a sintering method. A nickel hollow fiber support was prepared by spinning the polymer solution containing suspended nickel powders to a hollow fiber precursor which is then sintered at elevated temperature. For these hollow fiber