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Manufacturing Technology Insights | Wednesday, November 09, 2022
There is a massive influx of new technologies impacting filtration systems being developed, tested, and demonstrated in the filtration market by introducing new filtration system techniques.
FREMONT, CA: Global power generation and government regulations are fueling the growth in the filtration domain for industrial and manufacturing applications. Higher filtration efficacy is imperative for manufacturers to streamline their processes, boost operational efficiency, and mitigate carbon footprints. Coal-burning electric power plants are the primary sources of greenhouse gases, and there is a need for measures to keep them under check. The carbon filter process helps to remove carbon dioxide from smokestack gases. It uses a simple, low-cost filter with a porous carbonaceous sorbent that works at low pressures. Laboratory tests and modelling data allow devices to remove 90 per cent of carbon dioxide from smokestack gases.
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Using an electrostatic charge delivers higher efficiency on filtration products. Many countries have embraced the electrostatic charge process due to its optimal performance. These air filters work like a magnet, and the formulated fibres embedded in them generate strong static charges when air passes through them, attracting airborne particles and holding them until the filter is cleaned.
Indoor air filtration systems are rapidly growing in air filtration. Today, there is an increasing desire to improve health by reducing the dangers of dust, mould, bacteria, pollen, and allergens. This paved the way for developing and building high-performance filters that capture submicron particles and improve the air quality of indoor and public spaces. Membrane filter systems offer better solutions for this goal. They are microporous plastic films with specific pore size ratings, also called screens, sieves, or microporous filters. These membranes retain particles or microorganisms larger than their pore size by surface capture. Other particles that are smaller than the pore size are prevented by other mechanisms.
Filtration systems play an inevitable role in public health and safety in hospitals and operating room environments, medical applications like dialysis, and also in the pharmaceutical industry. For example, using Berry's Meltex polyester meltblown media in blood filtration helps remove white blood cells and decrease leukocytes that cause infection. This system performs based on size exclusion to remove white blood cells to use red blood cells in transfusions. The current biopharmaceutical process has six to eight stages of high-level filtration to remove viruses and proteins, requiring absorbent and selective filtration. The industry is also looking to create single-use nonwoven membranes that absorb significant proteins via surface filter modification, which would eventually reduce costs and liabilities.
Laboratory filtration demand has been growing massively over the decades and is one of the most critical techniques used in laboratories for achieving accurate results. Therefore, many new filtrations have come into being as a result of research and the fundamental pathogenesis of diseases. Microfiltration is emerging as the largest share of the global laboratory filtration market. It is extensively used for the cold sterilisation of API and enzymes and separating solid-liquid phases in various industries. Its features, like chemical resistance and high thermal stability, are the fundamental factors for the increased adoption of microfiltration in the industry.
Another significant technology that will continue to impact the filtration industry is nanotechnology which will gear up the future industry growth. Non-fibres can be utilised to drive downscale and also to enhance filtration selectivity. Research and use cases of nanofibers in filters are growing vastly, which will introduce many commercial products to the market in the near future.
Solid-Phase extraction (SPE) is another extractive technique used to separate compounds in the mixture from other dissolved compounds or suspend them in a liquid mixture. The procedure segregates particles according to their physical and chemical properties. Solid phase extraction helps isolate analytes of interest from different matrices, such as urine, blood, water, beverages, animal tissues, and soil. There are several developments in creating novel trapping media and tests like nanostructured materials, including carbon nanomaterials, electrospun nanofibers, magnetic nanoparticles, etc. These new materials and advancements are transforming the industries into a brighter future to improve SPE for the extraction of various kinds of materials such as biological, pharmaceutical, environmental, and food samples.
Furthermore, another critical area that highly needs filtration systems is to counter water shortages due to inadequate water filtration processes. The result of inadequacy in the water filtration system is deadly diarrheal diseases like cholera, typhoid fever, and other water-borne illnesses. Therefore, it is imperative to have a clean water method like reverse osmosis, a key filtration process used for industrial process water, municipal and industrial wastewater reuse, and desalination. Graphene-based water filters have shown better results in effectively separating oil from water, domestic water filtration, desalination, and wastewater treatment.
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