Ultrafiltration

The reuse of effluents for irrigation and indirect potable water uses is rapidly developing as an alternative to seawater desalination. This paper explores two membrane-based options available to treat sewage for water reuse, tertiary filtration (TF) of the effluent from a conventional activated slu

The use of ceramic membrane in liquid pollution treatment is actually limited due to the price of ceramic membrane, nevertheless these membranes are more resistant to solvent, pH and oxidation. In this work the preparation of low cost TiO2(50%)-ZnAl2O4(50%) membranes deposited on an artificial cordi

An investigation of wastewater treatment by ultrafiltration (UF) is introduced. In the experiments a UF membrane (UFPHT20-6338) and samples of Behshahr Ind. Co. wastewater as feed were used. The effect of operating conditions such as pressure difference, cross flow velocity, shear stress, temperatur

Membrane filtration is used for separating oil from water and treating waste metal-working fluids. This work presents two different filtration systems and investigates the possibility of reusing their permeates. The first system consists of an ultrafiltration membrane (UF) followed by a nanofiltrati

The main reason for the flux decline during the initial period of all filtration processes is the usual phenomena of concentration polarization and fouling. After this stage follows the cake filtration process that allows the obtaining of the steady state flux. The solute accumulated on the membrane

In cross-flow ultrafiltration permeate flux has three types of flow regimes. Initially it has a transient regime with a decreasing permeate flow rate. Then it attains a steady state, and the flux reaches a plateau. In the third stage the flow rate becomes independent of applied pressure and is calle

This article deals with water removal from oil-in-water emulsion by an ultrafiltration membrane at different transmembrane pressures. The membrane intrinsic resistance and gel resistance are analyzed and determined based on the resistance-in-series theory. The experimental results show that the effe

Whey is a by-product of cheese production which is used mainly as animal feed or released into the wastewater treatment process, although it is rich in valuable components. Recent developments in membrane filtration have provided exciting new opportunities for large-scale protein and lactose fractio

Characteristic features of ultrafiltration water treatment and water treatment using ultrafiltration in combination with complexation for water polluted with U(VI) were investigated. Polyethylenimine (PEI) was used as the complexing agent. The relationship of U(VI) removal as a function of pH and th

Driving force membrane processes seem to be most useful for water treatment. Reverse osmosis, nanofiltration and ultrafiltration have been applied to phthalate removal from water. In the experiment three membranes RO-DS3SE were tested for reverse osmosis, membrane NF-DS5DK for nanofiltration and UF-