ultrafiltration membrane filtration solution Articles

  • Membrane filtration

    Membrane is a thin layer of material that is capable of separating compounds as a function of physical and chemical properties when a driving force is applied across the membrane, which has been widely used in a wide range of applications in water industry [1]. Membrane can be classified by the range of compounds separated and the driving forces employed. For example, microfiltration (MF), ...


    By IWA Publishing

  • Polyethersulfone/polyacrylonitrile blended ultrafiltration membranes: preparation, morphology and filtration properties

    Polyethersulfone (PES)/polyacrylonitrile (PAN) membranes have been paid attention among membrane research subjects. However, very few studies are included in the literature. In our study, asymmetric ultrafiltration (UF) membranes were prepared from blends of PES/PAN with phase inversion method using water as coagulation bath. Polyvinylpyrrolidone (PVP) with Mw of 10,000 Da was used as pore ...


    By IWA Publishing

  • Membranes, the Finest Filtration

    Introduction The notion that salt could be removed from seawater without a phase change took hold of Dr. Sourirajan's imagination in the late 1950's. The actual invention of the reverse osmosis (RO) membrane took place in his laboratory at UCLA around 1960. (Thus Sourirajan could be called not only the 'Father of Reverse Osmosis,' but the initiator of all crossflow membrane technology.) The full ...


  • Membrane filtration and sonication for industrial wastewater reuse

    This paper presents an experimental study aimed at estimating the efficiency of the innovative process of ultrafiltration (UF) combined with sonication (Son.) for the refinement of treated effluent to be reused in wet textile processes. Such a novel approach, which has not yet been employed on a full industrial scale, has been experienced at pilot scale on the secondary effluent of the ...


    By IWA Publishing

  • Prediction of permeate flux decline in crossflow membrane filtration

    Microfiltration (MF) and ultrafiltration (UF) are pressure-driven membrane processes which are widely used in order to remove colloidal particles and microorganisms in water and waste water treatment systems. The filtration performance is, however, often hampered by the buildup of retained particulate matters on the membrane surfaces, which causes the deleterious permeate flux decline. ...


    By Toray Chemical Korea

  • Crossflow Membrane Filtration High-Purity Water Systems

    INTRODUCTION As the electronics industry continues to provide us with such products as high resolution television, notebook size portable computers and cars with automatic navigation systems, it becomes necessary to produce semiconductors with finer device geometries to allow for efficient placement of more circuits per a given area. This requires increased control of a semiconductor's material ...

  • Fouling mitigation in humic acid ultrafiltration using polysulfone/SAPO-34 mixed matrix membrane

    Although ultrafiltration (UF) membranes are applicable in wastewater and water treatment, most UF membranes are hydrophobic and susceptible to severe fouling by natural organic matter. In this work, polysulfone (PSf) membrane was blended with silicaluminophosphate (SAPO) nanoparticles, SAPO-34, to study the effect of SAPO-34 incorporation in humic acid (HA) fouling mitigation. The casting ...


    By IWA Publishing

  • Performance comparison of rotating disk ultrafiltration membrane module, a high shear device with cross–flow module

    Apart from plenty of advantages, the main disadvantage of ultrafiltration is rapid flux decay due to concentration polarisation and membrane fouling. The purpose of this work is to overcome this problem employing shear enhanced membrane filtration technique. To accomplish this, two different membrane modules were used; one was a standard cross–flow membrane module and the other one was the ...


    By Inderscience Publishers

  • Preparation and antibacterial property of PES/AgNO3 three-bore hollow fiber ultrafiltration membranes

    In this study, a three-bore polyethersulfone (PES) hollow fiber ultrafiltration (UF) membrane with antibacterial properties was prepared by phase inversion, using PES as the membrane material, N,N-dimethylacetamide (DMAC) as solvent, polyvinylpyrrolidone (PVP) and AgNO3 as additives. The silver particles were detected by X-ray photoelectron spectroscopy. The ...


    By IWA Publishing

  • Ideal treatment of laundry wastewater with ultrafiltration installations

    Treatment of very dirty work clothing also produces heavily polluted, oily/greasy wastewater. It is the aim of laundry wastewater treatment to reduce fresh water consumption and to minimise the volume of residuals. At the same time, adherence to the limit values according to appendix 55 of the General provisions on hydrocarbon, heavy metal and AOX contamination in wastewater must be guaranteed. ...


    By EnviroChemie GmbH

  • Crossflow Membrane Applications for Glycol-based aqueous solutions

    Introduction This document is a guide for water treatment engineers to better understand crossflow membrane applications for glycol-based aqueous solutions. It includes glycol applications we have sold equipment for, applications we have successfully tested, and applications we have not tested but are expected to be technically feasible. Glycol-based solutions are commonly used by a ...


  • Understanding Crossflow Filtration

    There's a lot of attention being given to water availability and purity, with good reason. Obtaining enough water is a struggle in some areas. In others, water is tainted with contaminants. It is therefore predictable that regulations and economics will force careful water treatment and stress water re-use. Fortunately, there are water treatment methods that can help you meet the water quality ...


  • Characterization and anti-fouling performance of nano-Al2O3/PVDF membrane for Songhua River raw water filtration

    Polyvinylidene fluoride (PVDF) flat ultrafiltration membranes modified by nano-sized alumina (Al2O3) particles were prepared by phase inversion process and their properties and anti-fouling performances were examined. The influence of three types of natural organic matters on the modified membrane fouling was also studied. Raw water was taken from two different locations, i.e., Harbin and ...


    By IWA Publishing

  • Reverse Osmosis Used to Treat ED Paint Ultrafiltration Permeate

    Abstract For a number of years membrane separation processes have been very effectively utilized as essential components of electrodeposition (ED) paint processes. As the two technologies grow and mature, applications for membranes related to ED paint continue to be developed. A case history is presented emphasizing the technological and economic considerations inherent to the practical ...


  • UK’s Axium Process Supplies Two Mobile Membrane Filtration Plants to Masdar Institute

    Masdar Institute of Science and Technology, an independent, research-driven graduate-level university focused on advanced energy and sustainable technologies, today announced it has commissioned UK-based Axium Process to install two mobile membrane filtration plants at the campus. Designed for pilot scale Microfiltration, Ultrafiltration, Nanofiltration and Reverse Osmosis trials, the mobile ...


    By Water Active Ltd

  • Picking Their Membranes - Part I -

    Membrane use by water suppliers may not be new, but suppliers are considering membranes in new ways -- by number and variety of applications. Membranes can work on a wider range of resource waters, more efficiently and for less cost than before. Among membranes' attractions as substitutes for conventional water-treatment technologies, such as filtration, distillation and ion-exchange are: ...


  • Practical Characterization of NF/UF Membranes

    Introduction Membrane separations in the ultrafiltration (UF) and especially the nanofiltration (NF) regions of the filtration spectrum are governed by a complex combination of both steric exclusion and surface force interactions. UF and NF membranes bearing formal surface charges display unusual selectivity behavior not predicted on the basis of physical pore size alone. Therefore, practical ...

  • Treating Industrial Water with Membrane Technology

    A variety of industries are finding that it makes sense to reevaluate the way they treat industrial process water, both to improve the quality of their products and increase the efficiency of their processes. Purification systems utilizing crossflow membrane filtration, such as reverse osmosis (RO), nanofiltration (NF) or ultrafiltration (UF) can be a good alternative to traditional filtration ...


  • Dynatec Provides Membrane System to Recover Silver

    Dynatec was selected to provide a complete system to recover silver in Dupont's Manati, Puerto Rico microcircuit materials plant. The Problem Dupont's microcircuit materials production facility in Manati, Puerto Rico produces high purity silver in their process.  The process produces a wastewater stream containing valuable dissolved silver compounds.  The plant had ...


    By Dynatec Systems Inc.

  • Mixed oxidants aid in membrane pretreatment, cleaning

    The prevalence of membrane filtration is rapidly growing in both the municipal and industrial water sectors. As membrane chemistries improve, so do operational capacities and process requirements. Two main activities that contribute to membrane efficiency and lifetime are membrane pretreatment and membrane maintenance. Maintenance may be further differentiated into periodic backwashing and ...


    By MIOX Corporation

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