Page 36 - Blog
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May 08, 2018
Sterlitech has seen a rising trend in the need for highly resistant membrane filtration systems from researchers. In response to this trend, HastelloyTM (C-276)1 versions of bench-top stirred cells, cross flow and forward osmosis test cells have been developed and are now available for the Stirred cells, Developer, Explorer, and Innovator product families.
HastelloyTM (C-276) is a steel superalloy containing nickel, chromium, molybdenum, and tungsten. It has outstanding resistance to corrosion, pitting and cracking when exposed to a wide range of aggressive chemicals and corrosive solutions: such as concentrated halide salt solutions, strong acids, and oxidizing acids.
How about highly resistant system components and parts?
To provide ultimate support, Sterlitech now offers high pressure feed flow pumps and pressure gauges with HastelloyTM (C-276) wetted parts. We also supply fittings, tubing and valves made of HastelloyTM (C-276). Users can now assemble membrane systems
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May 08, 2018
Graphene oxide (GO) has made its way to more than 500 peer-reviewed journal articles in 2017, demonstrating a variety of membrane technology applications. Out of the 500 papers, about 80 have investigated the use of graphene oxide for filtration applications (Figure 1). Research on graphene oxide has been a rapidly growing field since 2012, when Nair et al. first demonstrated that GO membrane allows unimpeded permeation of water while blocking all other compounds in the vapor phase.1
Graphene oxide membranes have been extensively investigated for water desalination, oil-water separation, gas separation and pervaporation applications. This material is also being developed into commercial membrane products. G2O is a UK-based company with a patent to utilize graphene oxide membranes to separate oil from water. This technology is applied in the oil industry to create fresh water from seawater. G2O is currently working with a number of industry and innovation partners to scale up and bring
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April 05, 2018
After months of living under the looming threat of “Day Zero”, Cape Town has tentatively pushed back the deadline of extreme water crisis for the remainder of the year. Day Zero, which had originally been scheduled for April 22, reflects the date when water levels in the city's major dams reaches 13.5% of their capacity. If this day arrived, taps would be shut off and Cape Town residents would need to stand in line to pick up their 25-liter daily ration of water.1 For perspective, this equivalent to the amount of water consumed in a four-minute shower.2
Drought-driven water shortages are a worldwide crisis. The cities at highest risk to run out of water include Jakarta (where the city is sinking from illegal groundwater extraction as sea levels around it rise), Mexico City (where taps are already turned off for many city citizens for parts of the day), Tokyo, London, and Miami.3 In California, almost 50% of the state is currently experiencing moderate drought.4
Cape Town is South Africa’s
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April 05, 2018
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 enables researchers to study RNA transcripts present in numerous individual cells at a given point in time. Thousands of cells undergo parallel RNA sequencing for thousands of genes, yielding large sets of data that indicate patterns in gene expression. For example, data collected by the developers of this technology has been used to implicate basal cellular heterogeneity in individual tuberculosis responses.1
In the Seq-Well system, a nanowell array captures single cells for sequencing. These wells are protected by a semipermeable membrane, which allows for lysis chemicals to pass through but retains the
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April 05, 2018
Sterlitech is launching new flat sheet membranes; TriSep MF01 and TriSep UB70.
The MF01 microfiltration membrane has various applications, especially for the food and dairy industries. Specific applications include clarification, fat removal, product concentration in sweeteners, whey processing, and fermentation broth filtration. It is also used industrially for concentration of macromolecules and large organic solutes.
For ultrafiltration, the UB70 membrane is designed for use in food & beverage, dairy, and wastewater treatment applications. This material is also suitable for treating produced water, MBR peak flow management, tertiary wastewater, and phosphorous removal.
*GFD: Gallons per square foot membrane active area per day
These new additions are available in large sheets or precut coupons for use in the Sepa CF or CF042 cells and most stirred cells. Custom membrane sizes are also available upon request.
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March 29, 2018
Sterlitech would like to notify our customers that SG flat sheet membranes from SUEZ (GE Osmonics) are being discontinued by the manufacturer. Limited quantities of SG flat sheet membranes in various sizes are currently available.
Product: SG
Manufacturer: SUEZ (GE Osmonics)
Type: Chlorine Resistant
pH Range: 1-11
MWCO: N/A
Polymer: TFCOur complete selection of membranes for reverse osmosis can be viewed on the flat sheet membrane page.
For more information about available RO membranes, or if you would like product selection assistance for your specific application, please contact us at 1-877-544-4420 or [email protected].
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March 09, 2018
Crystalline silica, most commonly found in the form of quartz, is a basic component of the earth; it’s found in soil, sand granite, and other minerals. During many industrial processes, crystalline silica is released as particles that are 100 times smaller than beach sand.1 Due to their size, these mineral particles cannot easily be cleared by human lungs. Instead, they persist in the respiratory system and form scar tissue, contributing to serious health problems for those experiencing prolonged exposure. The associated silicosis and other forms of cancer are a threat to workers in mining, construction, and other industrial trades.2
There is a global awareness of this seriousness of this issue, and the World Health Organization has published assessment documents detailing the negative health effects of exposure. Here in the US, the Occupational Safety and Health Administration (OSHA) released a Final Rule on Occupational Exposure to Respirable Crystalline Silica, to provide guidance
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March 09, 2018
As cities and urban landscapes expand across the globe, water resource management continues to pose a huge challenge. Natural wetlands are often built over as cities grow, but a recent strategy of green infrastructure applies the opposite principle – wetlands are protected and constructed as part of city planning.
Wetlands, whether natural or man-made, act as large-scale storage and filtration centers for water streams. Beyond providing a habitat for wildlife and greenery in otherwise urban landscapes, they can remove many harmful contaminants from water, including heavy metals, excess nutrients, pesticides, and bacteria.1
Wetlands can improve an area’s resilience to extreme weather by storing excess flood water. For example, the Staten Island Bluebelt Project created 400 acres of freshwater wetlands that resolved seasonal flooding issues and saved New York City the $300 million it would have required to accomplish this by constructing storm sewers.2 In the Wade Park Wetland off the coast
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March 09, 2018
A significant amount of resources have been allocated each year to the research and development (R&D) of membrane filtration technology. However, it remains unclear how closely research goals align with solving industry needs. Our Product Manager, Sepideh Jankhah, examines the history and evolution of membrane filtration technology applications and investigates R&D trends in this area based on peer-reviewed literature1.
Membrane filtration technology: who sets the tone for the future?
Our research indicates that research goals (as represented by the number of published peer reviewed literature) have closely followed industry demands for the last decade. Industry has benefited from the developments achieved by research initiatives, and the observed positive correlation between industry and R&D goals is expected to continue as we face new challenges. This symbiosis should result in more efficient processes and new products or applications that will address the shortcoming of current
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March 09, 2018
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 tissue cultures lie in one focal plane. Our transparent PETE filters are available in the 0.4 µm pore size rating commonly used for cell cultures.
Track-etch membranes have a long history of use in tissue culture experimentation, including use in multiwell plates and cell culture inserts. These membranes can act as scaffolding to create physiological microenvironments promoting growth of attachment-dependent cell cultures. The pore structures in this material allow for nutrient and environmental access to both the free surface (apical) and attached surface (basolateral) of cells. The successful growth
