membrane filter Articles | Environmental XPRT

Defining Pore Size Through Bubble Point Test

Pore size rating is among the key selection criteria for membrane filters as it indicates the extent of particle size (including microorganisms) that can effectively be retained in a filtration application. With its importance, manufacturers are compelled to provide pore size ratings as accurately as possible. For such purpose, bacterial and particle challenge testing methods are used to ...

Sep. 11, 2019

By Sterlitech Corporation

Membrane filtration for water quality testing

Microbial quality of a product has the potential for immediate impact to the consumer. A reliable and versatile water testing method is a necessity to determine the safety for human contact, use, and consumption, and detect the presence of organisms that cause spoilage and reduced shelf life. Often the challenge in water quality testing involves concentrating enough of the target organism to ...

Sep. 23, 2020

By Cytiva

Chemicals - Case Study

Challenge Long cake washing times and unsatisfactory results have a negative effect on the profitability of pigment production. Solution Development of membrane filter elements with customer-specific product design Targeted redesign and optimisation of filtration surfaces Modification of the filling channels and channel design in order to regulate the flow speed Configuration of filter ...

Nov. 5, 2020

By LENSER Filtration GmbH

Mining - Case Study

Challenge The mining of deposits with low material content requires ever more powerful equipment in order to come to grips with the mass throughputs. In order to reduce the cycle times, the ancillary times have to be minimised. Only through large filter elements with at least 10sqm filter areas can the necessary chamber volume be reached. At the same time, a long membrane service life is ...

Nov. 5, 2020

By LENSER Filtration GmbH

Case 20 Guohua Shenmu Power Plant - Case Study

Unit capacity: 2*110MW Rotary injection of low pressure pulse bag filter Flue gas volume: 2 800000m3 / h Entry temperature: 131.7 ° C Inlet concentration: Received base sulfur: Material: Ultrafine PPS / PTPS PTFE composite emulsion infiltration membrane Filter bag size: 127 ...

Sep. 10, 2019

By Anhui Yuanchen Environmental Protection Science & Technology Co.,LTD

Transparent Polyester Membrane Filters Enable High Resolution Microscopy

Sterlitech now offers transparent polyester track-etch (PETE) membrane filters with sufficient clarity to perform high resolution optical imaging through the membrane. The key attribute of this material is a special, low density pore structure that mitigates light diffusion and renders the filters highly translucent. Furthermore, the membrane has very uniform thickness and flat surfaces so ...

Mar. 9, 2018

By Sterlitech Corporation

Focus on Microfiltration Part 3: Extending Service Life Using Prefiltration

Last month we examined filter selection strategies for maximizing service life in continuous use applications. In this 3rd installment, we will examine the use of prefilters to extend service life. Clarifying liquids with high levels of suspended solids is challenging, especially for applications requiring submicron filtration. In these applications, filter users who experience frustratingly ...

Jun. 13, 2017

By Sterlitech Corporation

Assessment of a membrane drinking water filter in an emergency setting

The performance and acceptability of the NeroxTM membrane drinking water filter were evaluated among an internally displaced population in Pakistan. The membrane filter and a control ceramic candle filter were distributed to over 3,000 households. Following a 6-month period, 230 households were visited and filter performance and use were assessed. Only 6% of the visited households still ...

Jun. 8, 2015

By IWA Publishing

How do you clean up 375,000 m3 of contaminated river sediment every year? - Case Study

Boskalis Environmental, Lower Fox River, USA, environmental remediation Did you know: Our membrane filter presses helped remediate more than 13 miles of contaminated riverbed in the Lower Fox River in Wisconsin, with each filter press capable of producing 18 tons of filter cake every hour. Environmental remediation is always an ambitious task. And the case of Lower Fox River in ...

Mar. 15, 2019

By ANDRITZ Separation - ANDRITZ Group

Food - Case Study

Challenge Increasing efficiency and prolonging durability of filter elements Highest possible equipment availability during the seasonal sugar campaign Solution Refitting with LENSER membrane filter elements with application-specific design Easier cleaning through smooth and dimensionally stable surfaces Optimisation of chamber volume and cake washing through external and corner feed ...

Nov. 5, 2020

By LENSER Filtration GmbH

Single-Cell RNA Sequencing in a fast and inexpensive format

Sterlitech Corporation’s unique track-etch polycarbonate membrane filters are helping MIT Researchers pioneer a faster and less expensive means of identifying key genes turned on in response to infection or diseases, as featured in the February 13 issue of Nature Methods from the Shalek and Love Labs at Massachusetts Institute of Technology. Most cells in the human body only express a tiny ...

Mar. 13, 2017

By Sterlitech Corporation

Minerals - Case Study

Challenge Premature breakdown of membrane filter elements made of polypropylene due to high chlorine loads Pressure differentials and plate breakages caused by uneven chamber filling due to blocked filter channels Solution Testing and selection of new materials to prolong service life and reduce the influence of chlorine Modification of filter element design in respect to avoiding the ...

Nov. 6, 2020

By LENSER Filtration GmbH

What Is The Difference Between Dead-End Filtration And Cross-Flow Filtration?

Ceramic membrane manufactured by JIUWU HI-TECH is used for liquids separation in a cross-flow filtration way which is different from dead-end filtration. Dead-end filtration means the fluids flow is vertical to the filter surface, and the retained particles rapidly solidify on the surface of the filter to form a so-called filter cake. The pores of the filter are clogged by the filter cake, and ...

Oct. 31, 2019

By Jiangsu Jiuwu Hi-tech Co

Membrane filter presses at Lower Fox River, USA - Case Study

Sustainable remediation Environmental remediation is always an ambitious task. And the case of the Lower Fox River remediation project in Wisconsin is no exception. To reduce risk to both human health and the environment, the project aims to remediate PCB-impacted sediments from a 21.4-km stretch of river through dredging, capping, sand separation, sediment dewatering, water treatment, and ...

Jul. 5, 2018

By ANDRITZ Separation - ANDRITZ Group

Air filtration applications for membranes

Given their unique performance attributes membranes are finding use in a growing number of high efficiency air filtration applications. One example is in respirators and personal protective equipment. Applications where intense physical demands and risk of exposure to harmful contaminants are present demand the high efficiency / low pressure drop combination of expanded polytetrafluoroethylene ...

Jul. 28, 2011

By American Filtration & Separations Society (AFS)

Polycarbonate Membrane Filters for the Seq-Well Platform

The Seq-Well protocol uses PCTE membranes in an innovative platform for rapid single-cell transcriptomics. This powerful tool in the world of clinical discovery offers a precise snapshot of cellular behavior. As the product of a joint research venture between the Shalek and Love groups at MIT, this portable device combines single-cell sequencing with microfluidics technology. The system ...

Apr. 5, 2018

By Sterlitech Corporation

Modeling surface growth of escherichia coli on agar plates

Surface growth of Escherichia coli cells on a membrane filter placed on a nutrient agar plate under various conditions was studied with a mathematical model. The surface growth of bacterial cells showed a sigmoidal curve with time on a semilogarithmic plot. To describe it, a new logistic model that we presented earlier (H. Fujikawa et al., Food Microbiol. 21:501-509, 2004) was modified. Growth ...

Dec. 1, 2005

By American Society for Microbiology (ASM)

Modeling surface growth of escherichia coli on agar plates

Surface growth of Escherichia coli cells on a membrane filter placed on a nutrient agar plate under various conditions was studied with a mathematical model. The surface growth of bacterial cells showed a sigmoidal curve with time on a semilogarithmic plot. To describe it, a new logistic model that we presented earlier (H. Fujikawa et al., Food Microbiol. 21:501-509, 2004) was modified. Growth ...

Aug. 24, 2005

By American Society for Microbiology (ASM)

What can I use to filter my mobile phase?

If you are using mobile phase that contains salts or, generally, any components that are weighed out for its preparation, you will need to filter the solution before using with HPLC or UHPLC. The most common type of filtration is membrane microfiltration. We sell an extensive group of products for this and they are discussed very well in a blog post written by one of my colleagues: ...

Nov. 7, 2016

By Restek Corporation

Optimizing Substrates for IR/Raman Spectroscopy

Studying cell structures is the foundation of numerous fields in biology including health sciences, pharmacology, microbiology, and more. Traditional microscopic methods of observing structures within cells rely on dyes, fixatives, and/or artificial labels. The full effect that these extra components have on the functions of cell components is still unknown. For example, tacking a green ...

Oct. 12, 2020

By Sterlitech Corporation

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