electrostatic filter Articles | Environmental XPRT

Healthy conditions in training centre

The challenge CENFIM’s objective is to educate highly qualified and specialised employees for the metallurgical industry in Portugal. They organise courses of various durations and at various levels. The Portuguese metal industry counts approx. 19,000 companies, employing a total of 190,000 people. In the Arcos de Valdevez training centre of CENFIM various levels of metalworking and ...

Aug. 28, 2012

By Plymovent Group BV

Flexible welding fume extraction system in plant

The challenge VAM Drilling (Vallourec Mannesmann Oil & Gas Nederland BV) is located in Heerhugowaard, the Netherlands. This facility has been around for over 40 years. Approximately 20 employees are turning/welding in the plant on a daily basis. Sometimes even 24 hours a day, if projects need to meet certain deadlines. The welding and turning activities take place in two separate ...

Aug. 28, 2012

By Plymovent Group BV

Microbial reduction efficiencies of filtration, electrostatic polarization, and UV components of a Germicidal Air Cleaning System

Abstract: This study determined the effectiveness of components of a germicidal air-cleaning system involving filtration, electrostatic polarization, and UV light on the reduction of airborne bacteria and molds. The filter alone, filter and electrostatic polarization combined, and the filter, electrostatic polarization, and UV light were found to be effective (P < 0.05) in reducing a given ...

Jun. 10, 2016

By Dynamic Air Quality Solutions

Why choose an electrostatic, washable air filter?

When deciding what type of air conditioner or furnace filter to use, you should keep two things in mind: Airflow and Efficiency. In order to work at its optimum level, the a/c or heating unit requires no restriction to air flow. You should choose a filter that has the least effect on airflow, but removes the most dust from the air. ACI’s electrostatic air filters allow the air conditioning ...

Nov. 16, 2010

By ACI Manufacturing

What is an Electret?

Electret is a counter term of magnet. A magnet is a ferrous material that possesses a quasi-permanent internal and external magnetic field. An electret is a dielectric material that possesses a quasi-permanent internal and external electric field. There are natural electrets such as quartz and biomaterials. Artificial electrets are made by polarization, penetration of ion and electron beams, ...

Jul. 29, 2011

By American Filtration & Separations Society (AFS)

Do You Smell Something Burning?

For safety and insurance purposes, most if not all mechanical codes have requirements with regards to fire safety for materials used in a building’s HVAC systems. For instance, the State of Ohio (USA) MechanicalCode states in the section on “Air Filters” that:Media-type and electrostatic-type air filters shall be listed and labeled. Media-type air filter shall comply with UL ...

Nov. 1, 2011

By Purafil, Inc. - Filtration Group

Advances in control of PM_{2.5 and PM_{2.5 precursors generated by the combustion of pulverised coal}}

Particulate matter smaller than 2.5 mm in aerodynamic diametre (PM2.5) from coal-fired boilers is composed of directly emitted (primary) particles and particles formed from precursors (secondary particles). Technologies to reduce emissions of precursors to secondary PM2.5 emitted by coal-fired utility plants include wet and dry flue gas desulphurisation (FGD). Limestone forced oxidation (LSFO) ...

Jan. 26, 2004

By Inderscience Publishers

Novinda AS-HgX Shows Superior Hg Capture in Dry-Scrubbing Environment Case Study

In numerous field trials over the past two years Novinda Corporation has demonstrated efficient and effective mercury capture from flue gas at dry-scrubbed plants burning PRB coal. These trials were conducted at plants equipped with both Spray Dryer Absorbers (SDAs) and Circulating Dry Scrubbers (CDSs). Some units had selective catalytic reactors for NOx control. Particulates were captured either ...

Mar. 28, 2014

By Novinda Corp.

N95 Mask Material Inventor and AFS Fellow Peter Tsai Exits Retirement to Join Covid-19 Response

Long-time AFS member and supporter Peter Tsai has recently received international attention for coming out of retirement to join the battle against Covid-19. As the inventor of the synthetic fabric used to make the N95 mask that is critical in protecting front-line healthcare workers and stemming the spread of coronavirus, Peter started receiving a barrage of requests in mid-March for his ...

Aug. 4, 2020

By American Filtration & Separations Society (AFS)

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 air cleaners). Cigarette smoke is especially important to air filter performance for several reasons. First, the size of cigarette smoke particles ...

Jul. 28, 2011

By American Filtration & Separations Society (AFS)

Efficient cyclone systems for fine particle collection in the pharmaceutical industry

The optimized design of gas cyclones is of particular relevance for the recovery of highly valuable products, such as in the production of active pharmaceutical ingredients (API) through drying systems such as Spray or Fluid Bed Drying (Shoyele et al., 2006). . Traditionally, these have been captured with reverse flow gas cyclones, but fine and low density particles remain difficult to capture ...

Jan. 1, 2008

By Advanced Cyclone Systems, S. A. (ACS)

High-temperature air pollution control technology

Based on 35 years’ experience working for the environment, French company Maguin has developed the Cercat filter for high temperature air pollution control. David Gambier describes the technology and its potential use in the glassmaking industry.Maguin has been present in the waste thermal treatment field since the 1970s, offering customers innovative and state-of-the-art concepts. The company’s ...

Feb. 27, 2008

By MAGUIN SAS - a Moret Industries Company

How easily does COVID-19 spread through the air?

The COV-19 virus reportedly attaches itself to droplets which are emitted when infected people sneeze or cough or by droplets exiting an infected persons mouth when speaking. However, there are different theories of how long the virus will remain transmittable through the air. According to a new study COVID-19 appears to remain airborne longer than suspected The contaminated droplets containing ...

Mar. 11, 2021

By Genano Solutions

OM-1 Oil Mist Eliminators Collect Coolant Mists, Lubricant Mists, Smoke

A major midwest metalworking facility uses 24 OM-1 Mist Eliminators to collect oil mists from over 200 sources, including grinding, dressing, CNC machining, lathes and heat treating operations. OM-1's ability to accommodate smoke gives it an advantage over centrifugal-type oil mist collectors, which are not usable for smoke. Both soluble and non-soluble oils are used; OM-1 collects oil mists ...

Mar. 26, 2007

By Tri-Mer Air Pollution Control Systems

Mist Collector - Case Study

A major midwest metalworking facility uses 24 OM-1 Mist Collector units ducted to over 200 sources, including grinding, dressing, CNC machining, lathes and heat treating operations. The units are highly effective against coolant mists, lubricant mists, and more. OM-1’s ability to accommodate smoke gives it an advantage over centrifugal-type oil mist collectors, which are not usable for ...

Jun. 1, 2019

By Tri-Mer Air Pollution Control Systems

Company makes ink out of India’s air pollution

India’s dirty secret has a silver lining: The air pollution that is affecting millions of people in the country’s traffic-jammed cities can be turned into creative human expression with the help of a clever invention. A team of four young scientists have developed a special device that collects carbon soot from engine exhaust. They then turn the collected particulate matter into ...

Nov. 20, 2017

By Allerair Industries

Case study - Organic particulate filtration

Overview A food products company that mixes various types of waxes and other components to make the base for chewing gums was faced with the issue of cleaning up a slightly odorous, visible emission being exhausted from two of their process lines. The components of the emission were hot particles of chewing gum and some volatile organic compounds (VOC's). The particles would quickly clog a ...

Jan. 2, 2008

By Anguil Environmental Systems, Inc.

High-Tech Filters

The current economic situation of the cement industry creates sensitivity regarding off-times and process stability. More stringent air-pollution laws, especially when using waste-derived fuels, are drawing more attention to the off-gas cleaning facilities, usually bag filters. This article does not deal with electrostatic precipitators - as even they have well known disadvantages. By using more ...

Mar. 18, 2009

By Evonik Fibres GmbH

How do oil mist collectors work? Comparing the different technologies, part II

In our previous article about oil mist collector technology, we discussed the pros and cons of centrifugal mist collectors and filter-based mist collectors. Today, we look at the other two most common methods of getting oil mist out of the air. Electrostatic Precipitator Mist Collectors An electrostatic precipitator uses high-voltage electricity to impart a positive charge onto the particles of ...

Feb. 18, 2013

By ProVent, LLC

Filter technology to meet evolving regulations

Maguin has developed the Cercat filter for high temperature air pollution control. In this article, David Gambier and Hélène Real outline the technology, as well as installations planned for 2009. Maguin has been present in the waste thermal treatment field since the 1970s. The company’s knowledge has been built through the turnkey supply of thermal treatment units for different kinds of products ...

Mar. 17, 2009

By MAGUIN SAS - a Moret Industries Company