30 Articles found

American Filtration & Separations Society (AFS) Articles

Coagulation, flocculation and agglomeration
Agglomeration Agglomeration refers to the formation of more or less firmly bound primary particles by collision processes between primary particles, primary particles and agglomerates, as well as pre-existing agglomerates. The agglomeration ...

Jul. 28, 2011
Cigarette smoke: size distribution and effects on filters
Cigarette smoke is an important aerosol in the air filtration industry and research. It is an unwanted aerosol and therefore there are many applications for air filtration (ex. cigarette filters, residential and commercial ventilation filters, home ...

Jul. 28, 2011 Dr. Wilson Poon
Aerosol filtration in nanofiber filter media
Nanofiber filter media are used in air filter applications where a compact filtration system with very high overall and fractional efficiency and low initial pressure drop is required. Moreover, because the aerodynamic drag force on ...

Jul. 28, 2011
How well does my filter work?
Contamination control is the key to a cost-effective maintenance operation for hydraulic or engine systems. You depend on your filters, whether hydraulic, lube or fuel, to keep your fluids clean, to keep maintenance costs down, and to ensure ...

Jul. 28, 2011 Barry Verdegan
Pleatable UPE membrane media in pulse-cleaned dust removal air applications
Media Selection For initial tests, three media were selected for comparison. These structures are all designed for use in pulse-cleanable cartridges, with processing on blade pleaters. Arioso™ M7001-11 is a Solupor® ultra-high molecular ...

Jul. 28, 2011
Solid / gas separation with fabric filters
A myriad of filter media are utilized today for separation of particulate matter in industrial gas filtration applications. These media range from single use (deposable) to semi-permanent media and include fiber, fabric, ceramic, membrane, metal ...

Jul. 28, 2011 Ken Rubow
Nano this and Nano that?
Several terms, each with the prefix “nano-”, are now in use in the fields of filtration and its related separation processes, and it is important to be able to differentiate among their nuances of meaning. Firstly, there is nanometer ...

Jul. 28, 2011 Ken Sutherland
Calculating pressure drop of nanofiber air filter media
Nanofibers are becoming an integral part of many advanced air filtration media thanks to their enormous specific surface area. The large surface area, however, can cause strong resistance against fluid motion, which leads to an increase in pressure ...

Jul. 28, 2011
Hydrocarbon evaporative emissions & control for automotives
Even the cleanest and most efficient vehicle on the market today still pollutes the air and otherwise damages the environment. Motor vehicles emit several noxious pollutants which vehicle emissions standards are designed to regulate. Vehicles ...

Jul. 28, 2011
What is zeta potential?
Zeta potential is a measure of charges carried by particles suspended in a liquid (mostly water). Most particles suspended in water and wastewater, e.g. clays, silica, hydrated metal oxides, paper fibers, biological cells, etc., possess negative ...

Jul. 28, 2011

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