ultra-filtration Articles

  • Molecular gas filtration: chemisorption versus physisorption

    Advantages of chemisorption over physisorption in molecular gas filtration. To remove pollutant compounds in air, both spherical and pelletized solid products are widely used. Examples of their application include Indoor Air Quality, Corrosion in Control Rooms, In Vitro Fertilisation, and Odours. What all these ...


    By Bioconservacion SA

  • How to choose the best Industrial Water Filtration System for mining applications

    Over the course of the past few decades concern for the environment has brought about a large number of new regulations concerning the use of water in mining operations. These include how it is accessed, and how it is treated, using industrial water filtration to ensure all ...


    By Filtra Systems

  • Reverse Osmosis and Nanofiltration Membrane Filtration Systems: Common Problems and How to Fix Them

    Reverse osmosis (RO) and nanofiltration (NF) are membrane filtration technologies that are designed to remove solute ions and molecules from a pretreated liquid stream. Well-designed RO/NF units are compact and demand relatively little maintenance, making them an attractive alternative to conventional treatment trains. Even despite the merits of today’s efficient RO/NF technologies, it pays ...


    By SAMCO Technologies, Inc.

  • Screen Filtration Technology as Applied to Pretreatment of Reverse Osmosis and Ultra-Filtration Systems

    Summary New developments in the manufacturing technology of stainless steel weavewire screens enable mechanical style self-cleaning filters to be utilized as the primary pretreatment device for R-O and U-F systems. These systems are more cost effective and feature lower O&M requirements, than multimedia ...

  • How Do You Choose the Best Reverse Osmosis and Nanofiltration Membrane System for an Industrial Facility?

    As global demands for clean water increase, more and more industrial facilities are looking toward membrane filtration solutions, such as reverse osmosis (RO) and nanofiltration (NF), to help manage intake, process, and waste water treatment. Using membrane filtration can help your facility reuse wastewater and virtually eliminate discharge fees, and depending on the industry or required use, it ...


    By SAMCO Technologies, Inc.

  • Focus on Microfiltration Part 2: Filter Longevity and Filter Selection

    Last month, we described the considerations associated with predicting filter service life and how total throughput can be estimated through experimentation.  In this second installment, we will examine four filter selection strategies for maximizing service life in continuous-use applications. These aspects consider chemical compatibility, temperature, binding characteristics, and pore ...


    By Sterlitech Corporation

  • UV Minimises Risks for Major Food Retailers

    For many years, one of the UK’s largest food manufacturers has made it their business to be the best at producing all manner of bespoke cooked and raw, ready-to-eat vegetables and carbohydrates for their customers, who include chilled food manufacturers, food-to-go operators and, of course, major supermarkets. Being the best means not only complying with food quality standards set by ...


    By atg UV Technology

  • Keeping APCr out of Landfill

    The CIWM have recently featured an article by our very own Dr David Deegan in the latest edition of their magazine. The article explains why Tetronics International were unhappy to be informed recently that Defra ministers had taken the decision not to remove the ...

  • A history of chemically resistant membranes

    The use of polymeric membranes for filtration of non-aqueous solutions started around 1960 and has been developed significantly since then [1]. Today, non-aqueous membrane filtration applications in chemical and pharmaceutical processing account for more than 25% of the global total polymeric membrane market [2]. ...


    By Sterlitech Corporation

  • Demonstrating ultra-filtration and reverse osmosis performance using size exclusion chromatography

    Advanced water treatment plants employing ultrafiltration (UF) and reverse osmosis (RO) membrane processes are frequently implemented for the production of high-quality recycled water. It is important that process performance is able to be quantified and assessed to ensure it is fit for purpose. This research utilizes size exclusion chromatography with organic carbon, organic nitrogen and UV254 ...


    By IWA Publishing

  • Pilot Study Application of Tertiary Clarification and Filtration to Meet Proposed Ultra Low Phosphorous Discharge Limits on The Spokane River

    The Spokane River flows through northern Idaho and eastern Washington. The Washington State Department of Ecology is proposing to implement an interim phosphorous TMDL (total maximum daily load) of 50 ppb, and a final TMDL of 10 ppb on all point source discharges to the river. Biological treatment alone is not sufficient to meet these levels, requiring the addition of tertiary physical/chemical ...

  • Dual layer hollow fiber PVDF ultra-filtration membranes containing Ag nano-particle loaded zeolite with longer term anti-bacterial capacity in salt water

    Dual layer polyvinylidene fluoride (PVDF), antibacterial, hollow fiber, ultra-filtration composite membranes with antibacterial particles (silver (Ag) nano-particles loaded zeolite (Z-Ag)) in the outer layer were prepared with high water flux and desired pore sizes. The amounts of Ag+ released from the composite membranes, freshly made and stored in water and salt solution, were measured. The ...


    By IWA Publishing

  • 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

  • The Filtration Spectrum

    Reverse Osmosis. Microfiltration. Distillation. Deionization. With so many types of filtration and purification systems on the market today it is difficult to determine which type of technology is best for your needs. The filtration of liquids is performed at many levels. To understand how to maximize your filtration needs, one needs to consider the size range of the particles. Once this is ...

  • Is Ultraviolet Ultra Safe?

    With retailers under pressure to meet increasing health and safety standards, it’s no surprise that many of our food & products are coming into contact with Ultraviolet (UV) radiation which is gradually becoming common as a cost effective method of reducing or eliminating pathogens Ultraviolet wavelengths are classified into three general areas: UV-A, UV-B and UV-C. These can be used in ...


    By Alpha Cure (UK)

  • Ultra-Pure Proof with Mass Detection

    Before joining the newly formed Reach Separations in February 2012, I spent five years at AstraZeneca in analysis and purification (latterly as group lead in reversed phase and chiral purification). This experience gives me a good perspective of both the needs of “big pharma” and, more recently, the needs of a specialist separation solution provider. My ...


    By Waters Corporation

  • Ultra Fine Feed Hammer Mill

    About Ultra Fine Feed Hammer Mill SWFL series ultra fine feed hammer mill is a new grinding device which applies to all sizes of feed plants. It can grind all grain products such as corn, broomcorn, wheat, rice, etc. after sieving, iron removing and mixing stages. The ground products can be further processed as animal feed, especially suitable for shrimp, turtle, eel and other llittle ...


    By Allance Pellet Machinery

  • Ultra Pure Chemical Dispense Modules

    CPS was contracted to design, fabricate, install and commission Ultra Pure Chemical Dispense modules for a major new Electronics facility in Germany. Seven units were designed and installed to handle a range of Acids, Alkali’s and Solvents from 200 Litre drums to the tools in the cleanroom. The units were manufactured in White Polypropylene with Stainless Steel and PFA pumps and ...

  • Ultra Low Emission Vehicle II Ultra Low PGM

    The task for the emissions management sector is to deliver cost effective solutions to meet future emissions standards. Global Emissions Management reports on catalyst development at Johnson Matthey demonstrating that ULEV II limits can be ...

  • 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 ...


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