Removing Airborne Gaseous Pollutants

The removal of gaseous pollutants ( odors ) is often accomplished by using a masking agent sprayed into the room or area with the odor. If the odor is temporary or infrequent then the aerosol spray deodorizers will usually meet the task. If, however, the odor is from a continuous source and is strong enough or dangerous to breathe then commercial grade carbon media filters will be required.

The use of expanded carbon ( charcoal) for the reduction/removal of airborne gaseous pollutants has been around for over 100 years. These carbon media packs ( usually 1 inch to 4 inches in depth) can be very effective at removing these strong, continuous odors and the carbon can be combined with other materials to catalyze some pollutants that are not removed by just carbon alone.

Pure Air Systems, has been manufacturing HEPA and Carbon based, fan powered, commercial grade air filtration systems, since 1985. These metal framed units incorporate the newer variable speed motors and the air flows range from a low of 50 CFM up to 2,000 CFM. PAS offers a wide range of sizes and configurations to fit any specific need. Some of the large units can hold up to 80 lbs of carbon media or applications where high concentrations of gaseous pollutants are present. 

For more information on the complete line of HEPA and Carbon filtration systems please go to our website at: http://www.pureairsystems.com   or call us on our toll free number at:  800-869-8025.

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Filtration For Your 3D Printer

With over 13 years of experience in using FDM and FFF 3D style printers one learns quickly the various quirks in the operation of these printers. While they have improved dramatically since the 2011-2012 introduction of desk top printers, there are still some challenges when printing with various filament types. To be specific, ABS ( Acrylonitrile Butadiene Styrene ) has been one of the more popular materials with which to print. However, this material off-gasses when printing at 245 Degrees C and above and the odor can be quite significant. In addition, the gases produced along with some of the fine particles released during printing can become a health concern if not properly vented or isolated when printing occurs.

One of the other issues when printing with ABS is the layer separation that can take place if the object being printed cools to rapidly during the printing process. To minimize this issue you need to enclose the printer and keep the cold air drafts from falling on the printer bed. This enclosure can also also double as a mechanism to reduce the entry of the odors and particulate into the room. The use of a fan powered exhaust system attached to a vent in the enclosure along with a carbon media and HEPA filter will allow for continued use of the printer inside any room or enclosed area without compromising the environmental integrity of the room.

Pure Air Systems has been making fan powered HEPA and Carbon medial filters since 1985. These systems are designed to move from 50 CFM up to 2000 CFM with the ability to control the air volume in 1% increments. These metal framed units come in seven different configurations with the addition of a portable unit that is a prefect fit for the enclosures that would be placed over the 3D printers. For more information on the complete line of HEPA and Carbon media filters please go to our website at: http://www.pureairsystems.com      or call us on our toll-free number at: 800-869-8025.

 

 

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Gaseous Pollutants Reduction and/or Removal

Airborne pollutants come in many forms. Some we can see like smoke from manufacturing or burning leaves, or particulate in the air from a wide range of sources. But there are many pollutants that are invisible to the naked eye but may produce strong odors some of which can be deadly in large concentrations. Odors produced outside tend to dissipate quickly and unless you are next the source you may not even notice it. On the other hand, gaseous pollutants in closed spaces can be extremely dangerous unless either properly vented or contained in a controlled environment.

Many household odors such as odors from pets, food, cooking, smoking or from various crafts, can be somewhat harmful or a strong irritant if inhaled over a long period of time. These gaseous odors are not removed with standard furnace filters, as those are primarily for capturing airborne particulate, rather you will require a material that will adsorb the gaseous particles. Typically this material is comprised of activated carbon ( charcoal ) and placed in the return air stream of the HVAC system or used in a stand-alone, fan-powered unit.

Carbon is one of the most effective media for reducing and/or removing gaseous pollutants from the air. Expanded carbon has a very high surface area and can adsorb over 100 times its own weight in gaseous pollutants. This material is often contained in a mesh type bag or cannister with perforations to allow air to pass through with minimal resistance. Carbon does have some limitations in that once the carbon has adsorbed it available capacity it will then begin to release this same odor back into the air stream. Typically this material will last 2 to 4 months for most applications before it has to be replaced. 

For more information on carbon for odor removal please go to our website at:  http://www.pureairsystems.com    or call us on our toll-free number at: 800-869-8025. 

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Carbon Filters For Removal of Odors and Gaseous Pollutants

The removal of airborne odors and gaseous pollutants is a totally different technology than the removal of airborne particulate. To capture gaseous odors and pollutants requires some form of material or compound that can capture the gaesous molecules and hold them in place. The most commen type of material used for this type of process is carbon which is activated charcoal placed in a web-like enclosure. This material is created under high tempertures and has a very high surface area with lots of openings that can capture gaseous pollutants up to ten times its own weight. 

The term used for capturing gases and odors with carbon and other materials is the “adsorbtive process” This is different than the term “absorb” which is used with sponge-like materials. Carbon has a great affinity to capture and hold the majority of organic and inorganic gases and will hold them until the carbon becomes saturated at which time the carbon needs to bed replaced. Frequency of change is dependent upon the amount of odor producing gas and the volume of air ( in CFM ) that you are cleaning. 

Granular carbon media can be packaged in many ways. For water filtration the carbon media is placed in a porous bag or fine screen enclosure. For use in airborne processes it can be placed in a cardboard frame with fine screening material or infused in a  filter media type substrate an placed accordian style in a frame sized to fit into any opening. These carbon filters can be placed in the return air of HVAC ductwork and used in conjunction with air filters.

Pure Air Systems manufactures a complete line of fan-powered air filtration systems that can include HEPA and Carbon media filters or all Carbon media for applications where just gases and odors need to be removed. In all cases a prefiter is always placed in front of the carbon or HEPA filter fo keep the secondary filters clean.

For more information on the complete line of air filtration systems please go to our website at:  https://www.pureairsystems.com   or call us on our toll-free number at:  800-869-8025.

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Make Sure Your Bakery Smells Like a Bakery

The other day I went to purchase some doughnuts at a new Bakery that opened up in an old strip mall near our house. The other tenants in the building include a bar, fix it shop and automotive repair shop at the end.

Older buildings, especially small strip mall building often had very little barrier between business compartment and odors from one business could and often did migrate into the adjacent store or even businesses two stores away.

This Bakery had that problem. Walking in to the doughnut shop one would think the aroma would be of baked goods. Not this one. It had the odor of un-burned hydrocarbons, oil and something else I could not identify. Fortunately the baked goods did not share that odor but it did make it somewhat unappetizing when I purchased the baked goods.

Pure Air Systems has been making Hepa and Carbon based, fan powered, commercial grade air filtration systems since 1985. These units can move as little as 50 CFM or as much as 2,000 CFM and can operate either attached to an existing HVAC unit or as a stand-alone system.

A 2000 CFM unit could be placed in the odor infected business and both filter out the odors and particulate as well as pressurize the environment to minimize the infiltration of the airborne contaminants. This has been done hundreds of times with the 2000HS units with exceptional results.

The problems facing the doughnut shop are duplicated in strip malls across the U.S. It is especially challenging when your store is next to a Nail Salon or Hair Salon. Odors from the chemicals used in these facilities can actually destroy your business. And trying to get the management to allow you to move to another location may not be possible or not allowed in your contract.

For more information on the complete line of air filtration systems please go to our website at: https://www.pureairsystems.com  or call us on our toll-free number at: 800-869-8025.

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Cigarette Smoke Removal

I have written over 100 articles and blogs on the subject of removing cigarette smoke and odor from any indoor environment and the resolutions we have today are the same as those proposed 30 years ago.

The best and most effective method of removing smoke from the indoor environment is to eliminate any smoking in indoor environments. It’s just that simple. Removing it using air filtration, air dilution, carbon filters and high volume fans is only a band-aid approach at best.

Once the cigarette smoke sticks to any surface it will re-release that odor for days. It requires a strong solvent based cleaner to remove the brown tar material that is present on the walls of a smoking environment.

Pure Air Systems has been around since 1985 producing high capacity, commercial grade, certified HEPA and Carbon based fan powered air filtration systems for the residential, commercial, institutional, medical and industrial market place. Many of these systems were sold for the exclusive purpose of removing cigarette and cigar smoke from indoor environments.

The degree of effectiveness of the systems was directly proportional to how much smoke we could remove at the source over time. And, the cigarette smoke will clog up a prefilter in two to three weeks and the HEPA filter in less than 3 months. The Carbon media in the units which is designed to remove much of the odor, would last perhaps 4 to 6 weeks at best. In essence, it is very expensive and difficult to remove the cigarette smoke and odor with any degree of effectiveness.

It is for this reason that smoking is prohibited from most buildings, hospitals, schools, airports, planes, trains and ships. Aside from the environmental issues smoking is also extremely harmful to your health.

For more information on the complete line of HEPA and Carbon based filtration systems please go to our website at: https://www.pureairsystems.com  or call us on our toll-free number at: 800-869-8025.

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Capturing Odors and Particulate From 3D Printers

3D Printers have been on the market now since 2010 and the use of the FDM or FFF style 3D printers that use filaments made from a wide variety of materials are the most commonly used in schools, libraries, small R&D labs, business and homes.

Some of the materials that are used in the printing process such as ABS and Carbon Fiber produce significant odors and in a small room this can be very noticeable and unpleasant. In addition, small, sub-micron particles are released into the air during the printing phase. These particulate are too small to see with the naked eye but can become an irritant to those individuals who have allergies or have some form of respiratory dysfunction.

In order to remedy this issue, should it present itself as a problem, one option is to enclose the 3D Printer to contain the odors and particulate and the second is to connect a filtration system to the enclosure to effectively remove the odors and remove the airborne particulate.

LiteWorld LLC makes a large plexiglass enclosure with aluminum frame and large access doors that will fit over the larger open 3D printers such as the LulzBot TAZ 3D Printers. These enclosures can be purchased directly from LiteWorld by going to their website at: http://www.liteworldllc.com or contacting them by phone at: 941-999-8200.

Pure Air Systems makes the HEPA and Carbon based air filtration systems that can connect to one or multiple enclosures to both remove the odors using the Carbon filters that are included in the systems and remove the particulate by using the commercial grade HEPA filters. These high end systems, coupled with the LiteWorld enclosures will provide an almost clean room environment for your 3D Printer operation.

For more information on the complete line of Carbon and HEPA based air filtration systems please go to our website at: https://www.pureairsystems.com or call us on our toll-free number at: 800-869-8025.

Indy Air Show 09
Indy Air Show 09

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Like Two Ships Passing In The Night

Taken from a poem by Henry Wadsworth Longfellow, the term two ships passing in the night references two people that meet for a brief but intense moment then go their separate ways never to see each other again. This may be familiar to many people that have experienced a brief meeting or opportunity to interact with someone for a short time where something significant happened but then never to see that individual again. But the memory lingers on.

You are looking for something specific on Google using every key word you can think of  that should get you to that site or page or photo that will connect you to your goal. Through a series of websites and re-directs you actually find what you are looking for. Forgetting to bookmark the page after you’ve retrieved some of the information, you tell yourself you can find it again. You attempt to   locate it again only to find out you can’t get back to it.

When trying to locate information on a particular company or product a great source of information often comes from a more active website, especially one that produces a weekly blog or update. Since this information is pushed throughout the internet world in a number of forms, even using an indirect search can often result in success.

Pure Air Systems has been manufacturing commercial grade, certified HEPA based air filtration systems since 1985. Their first website was developed in the early 1990’s and they have made it bigger and better ever since. Searching for HEPA filtration systems or directly for Pure Air Systems will take you to the very first page on every search engine. However, in today’s world, the search engines no longer keep sites up in a certain position unless they are active and producing value added content material on a regular basis. This is why new blogs, like this one, are written for the site every week.

Using Google analytics to track activity for Pure Air Systems shows a high number of visitors each month ( in excess of 2,000) with a fairly high number of new visitors. In addition, the average amount of time each visitor spent on the site is in excess of 2:00 minutes. The bounce rate is relatively low ( 40%) so this tells us a number of people are finding what they are looking for and some are coming back for more information.

The PAS site has a section called “Pure Air University” that consists of a number of individual sections dedicated to providing educational information on everything you wanted to know about air filtration, filter systems, heat exchangers, positive and negative pressure and how to apply the systems.  When looking  at the analytics this particular section has the greatest amount of viewership. This tells us that people are looking for information they can use and that will allow them to make a more objective evaluation of their next filter or air filtration purchase.

Searching for and finding Pure Air Systems on the internet the first time and subsequent times is easy. Even if you don’t bookmark the site, and we recommend you do, coming back to us is simple…unlike two ships passing in the night.

For more information on Pure Air Systems and its complete line of HEPA and Carbon based air filtration systems please go to our  website at: www.pureairsystems.com or follow us on twitter @pureairsystems. You can also find us on Facebook and of course call us at anytime on our toll-free number at: 800-869-8025.

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Maid In Amerika

If you go to the comments section of any article published on-line that discusses the plight of the American manufacturing machine you find people complaining bitterly about the fact that nothing is made here anymore. In truth, the vast majority of major products are made here in the US. However, almost all of the consumer electronics and most of the general duty appliances are made outside the U.S., and therein lies the problem.

If you use a cell phone, computer of any style or type, tablet or other digital communication device, more than likely it is manufactured overseas. Yes, many of these companies, like Apple, are based right here in the U.S, but they have their devices made some place else. Small appliances also fit into the same category. Yet, it is interesting to note, consumers may complain about the perceived lack of American made products, but they will purchase the imported brands even if there is a similar product that is actually made right here. The main reason…price. Over time people have rationalized that one companies product is the same as another companies product and therefore price is the deciding factor.

Pure Air Systems has been manufacturing commercial grade, certified HEPA and Carbon based air filtration systems since 1985. These units were and still are made right here in the USA. In 1989 PAS began putting “Made in the USA” stickers on each unit. It was our way of telling people this product was fabricated from all US made components. The intent was to assure the public that we were not importing the products from overseas.

Over the years a number of  U.S. based companies offered alternate air filtration technology based systems that in some case competed with our smaller units. The majority of these systems were fabricated overseas and they were usually of a lesser quality but also considerably less expensive than our systems. And even though PAS has repeatedly shown to meet or exceed the performance requirements of our customers, many individuals and some companies continue to purchase the imported products.

Today, Pure Air Systems continues to manufacture all of its systems here in the U.S. Some of the electrical components and a few mechanical components are fabricated overseas as these required parts are no longer made in the U.S. However, our products are still some of the most powerful, effective and sophisticated HEPA air filtration systems made today. Customers from around the world now use our filtration systems and our reputation for quality and performance is seldom challenged.

There is no doubt, that companies around the world have access to the same technologies and components and the need to continue improving our products has never been greater. However, we will never sacrifice quality and performance for price. We know what is required to provide our customers with the best available air filtration technology and they rely on us to maintain that premise.

For more information on our complete line of HEPA and Carbon based air filtration products please go to our website at: www.pureairsystems.com or follow us on Twitter @pureairsystems or go to our Facebook page at: www.facebook.com/pureairsystems.

 

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See Water

If at first glance you think I misspelled the title of this blog and it should read “Sea Water” you are incorrect. This is about water in the form of water vapor or condensation that you often see on windows and where ever damp cold air comes in contact with a warm surface. When you “see” water condensing or water dripping from someplace it shouldn’t be you need to find out why.

One of the most common places in a home to find water in the form of condensation in on single pane windows or on walls or surfaces that are inside barriers for outside walls. Condensation forms when the dew point is relatively high…say 60 to 70 degrees and there is a lot of humidity in the air. Since warm air holds moisture better than cold air the condensation issue is usually found in the summer months. Although it can also be an issue in the fall or spring of the year.

One of the challenges with tight homes and office buildings is the limited amount of fresh, outside air that is introduced into the indoor environment. While constantly circulating the air with the HVAC  fan systems does keep the air moving,  it does little to keep the air from getting stagnant or reduce the indoor levels of  CO2. Introducing outside air, even small amounts over time, can be significantly help the occupied areas. However, if the outside air is hot or cool and humid, then the condensation issue can be a problem again.

Some of the newer variable speed drive, high efficiency HVAC systems incorporate a de-humidification function that allows the cooling coils in the air handler to get really cold during the AC cycle prior to turning on the air handler fan. This allows for more removal of the moisture that may be introduced as outside, fresh air through the HVAC unit.

One of the main reasons for minimizing the amount of “indoor” moisture is to reduce or eliminate the potential for mold growth. There are two main “needs” for mold to grow. Water and a food source. Take away either one and you will significantly reduce the chances of mold growing in the indoor environment. So when  you see water in the form of condensation on the windows in your home or office you can be fairly sure that there is moisture forming in other parts of the indoor structure. And….where there is water there is mold.

Pure Air Systems has been making HEPA and Carbon based fan powered air filtration systems since 1985. These units can be attached to  and HVAC system or used as stand-alone units in residential, commercial, institutional or industrial applications. For over 25 years PAS has used their units to introduce small amounts of outside air that is first past through the HEPA units then into the HVAC units. Since the PAS units are mixing small amounts of outside air (usually 50 to 80 CFM ) with large amounts of warm, unfiltered return air ( usually 300 to 800 CFM) there is little chance for moisture to occur.

This process has been used thousands of times since we first introduced the systems and has been very effective at not only cleaning all the air in the homes up to 48 times a day, but provide for some fresh air without the potential for adding moisture or inviting mold growth indoors.

For more information on the complete line of HEPA and Carbon based air filtration systems please go to our website at: www.pureairsystems.com. Or call us at: 800-869-8025.

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