Air Contaminant Articles

  • Cleaning the Air We Breathe, Coal Fired Power Plant - Case Study

    By cleaning flue gases from coal power plants, the amount of environmentally hazardous emissions can be sharply reduced. Mist elimination from Munters is a critical part of this process. Munters has worked with leading power generating companies for decades and have through testing and follow up built an extensive parameter database and design tool to be able to adapt and optimize results based ...


    By Munters Zeol Division

  • The Chemical Aspect of NOx Scrubbing

    With the passage of the 1990 Clean Air Act Amendments, many chemical and metal industries and utility producers will now be required to further limit the amount of NOx (Nitrogen Oxides) produced. NOx is a precursor to ozone in the atmosphere, and is believed to be a major contributor to acidic deposition (acid rain). Formation of ozone: NOx is produced in a variety of ...


    By CR Clean Air Group, LLC

  • On the ionization of air for removal of noxious effluvia” (Air ionization of indoor environments for control of volatile and particulate contaminants with nonthermal plasmas generated by dielectric-barrier discharge)

    Abstract Recent developments in the application of controllable air ionization processes that apply dielectric-barrier discharge devices to generate nonthermal plasmas have led to applications for chemical and biological decontamination in indoor air environments. These include significant reductions in airborne microbials, neutralization of odors, and reductions of specific volatile ...

  • Biofilters vs Asdorption

    In the last three decades biological technologies have emerged as a sustainable and economically-viable alternative compared to traditional techniques like adsorption/absorption for purifying gases. They were well-received initially in the industry and interesting products with good results were carried out for several years. However, owing to a series of reasons that will be detailed in this ...


    By Bioconservacion SA

  • Do You Know the Various Types of Indoor Air Pollutants?

    Indoor air pollutants can always add to an assortment of health problems. Only due to indoor pollution, asthma and other respiratory diseases deteriorate further. If an asthmatic person sleeps in a couch where there are plenty of dust mites, that person may suffer from frequent asthmatic attacks during the night. Biological contaminants and dust particles can give people skin allergies, fungal ...


  • Three Reasons Why It’s Time to Invest in Your Own Air Purity Test Kit

    The costs of hiring someone to test your breathing air lines on site can quickly add up, have you ever considered doing your own tests? The use of breathing masks and compressed breathing air is a vital component of maintaining safety standards on site. The air produced protects workers in spray booths, car body shops and other applications where isocyanate paint mixtures are ...


    By a1-cbiss

  • Dispersed Phase Inertisation (DPI): A New Technology for the Treatment of Landfill Leachate and Complex Water

    Inertisation is thus far the only technology for the conversion of leachate and contaminated water into an inert product, thereby facilitating handling and disposal in MSW landfills. Introduction One of the most complex aspects of the global management of an MSW landfill or treatment plant is leachate. This liquid comes mainly from the degradation of organic matter, added to other ...


    By Energy & Waste S.l

  • Magnetically coupled pump reduces maintenance costs

    Huntsman Holland produces raw materials for the polyurethanes industry. Due to pump problems, the company was looking for a better solution. Of course, no company will accept the risk of leaks when buying a pump, but that even applies more strongly in the chemical industry. Because they are working with substances which can pollute the environment or which can adversely affect the health ...


    By DESMI A/S

  • In-situ Technology for Clean up of Halogen Contaminated Sites - Process West case study

    Halogenated volatile organic solvents are found in the soil or ground-water at many former and active industrial sites. Fortunately highly effective remediation technologies are available to restore these former brownfields to a healthy state. The range of technologies includes the traditional approach where the contaminated soil is excavated and the volatile halogenated contaminants are ...


    By Bionomic Industries Inc.

  • Biological Cr(VI) immobilisation in saturated aquifer zone using culture inoculated soil columns

    Remediation of Cr(VI) requires the reduction of the mobile state [Cr(VI)], which exists in the natural environment as the oxyanionic species (CrxOyz−), to the less mobile trivalent state [Cr(III)], which readily forms the hydroxide precipitate [Cr(OH)3(s)] under natural pH conditions. In this study, Cr(VI) ...


    By IWA Publishing

  • Air dispersion modelling for individual exposure studies

    The concentration fluctuations of a dispersing hazardous gaseous pollutant in the atmospheric boundary layer, and the hazard associated with short–term concentration levels, demonstrate the necessity of estimating the magnitude of these fluctuations using predicting models. To predict and estimate the maximum expected dosage and the exposure time within which the dosage exceeds certain health ...


    By Inderscience Publishers

  • Biofilter

    Biofiltration is a pollution control technique using living material to capture and biologically degrade process pollutants. Common uses include processing waste water, capturing harmful chemicals or silt ...


    By IWA Publishing

  • Data Center Contamination Control: A Case Study

    In order to continue to deliver relevant and timely information, we polled a number of those receiving this newsletter as to what topics they would most like to see. The overwhelming majority came back with requests for more case studies and applications. Therefore, this month’s newsletter will be the first of several cases studies we will present over the coming months. And as always, we ...


    By Purafil, Inc.

  • Canarina DISPER software · contamination control · commands 29

    Wind angle (0 to 360 degrees): It is the horizontal angle of wind measured clockwise from the North (at the window top).   Ambient temperature (K): The temperature of the medium surrounding an object.  This is the air temperature at stack ...

  • Monroe scrubber solves pollution and odor problems from a glass resin reactor at a synthetic fiber manufacturing plant

    Monroe scrubber solves pollution and odor problems from a glass resin reactor at a synthetic fiber manufacturing plant Challenge The plant was emitting about 6.0 lbs/hr of toxic fumes from their resin reactor at a temperature of 200oF. The emitted gases to be cleaned were from hazardous, gaseous pollutants such as phenol and formaldehyde, as well as dust particulate. The ...

  • The effects of Binary Ionization Technology (BIT) Version:1

    According to the EPA and American Medical Association (AMA), studies indicate that indoor levels of many pollutants may be 25 times and occasionally more than 200 times higher than outdoor levels. While older buildings present the issue of a large buildup of contaminants over time, today’s modern building codes mandate that building must be built with tighter wraps so new buildings are ...

  • `Green Buildings` can lead to problems with Indoor Air Quality (IAQ)

    In striving to construct energy-efficient, cost-effective buildings, the imperative issue of their indoor air quality (IAQ) is often overlooked. This can lead to an unhealthy indoor environment and to conditions such as sick building syndrome (SBS) or other building related illnesses (BRI). In the past few decades, energy conservation measures have led to airtight building construction that can ...


    By PPM Technology

  • Elevated PM10 concentrations and high PM2.5/PM10 ratio in the Brussels Urban area during the 2006 car-free Sunday

    The results of the Car-Free Sundays in Brussels demonstrate the close relationship between the traffic and the presence of the gaseous pollutants such as NO, NO2, CO, CO2 and O3 in a traffic environment. The relationship with PM10 and PM2.5 seems to be much more complex. In fact, the PM10 and PM2.5 concentrations on the Car-Free Sunday 2006 were amongst the highest that year and they were three ...


    By Inderscience Publishers

  • Air contaminants modelling by use of several receptor-oriented models

    Two data sets were apportioned by the use of several models (chemical mass balance (CMB), principal components analysis-absolute principal components scores (PCA-APCS), positive matrix factorisation (PMF) and UNMIX). Source apportionment were results derived from the CMB modelling applied to the data from Vienna point traffic source, paved road and crustal dust as the dominant contributors to the ...


    By Inderscience Publishers

  • Effects of UVGI filtration on indoor air contaminants and HVAC systems

    Proprietary High Intensity UVC (Germicidal 254 nm) Mercury Vapor Quartz Lamps designed to prevent and destroy mold and other microbial growth on the A/C coil and eliminate biological contaminants and chemicals in the air. Ultraviolet light destroy biological & chemical contaminants TOMIES proprietary High-Intensity Mercury Vapor Quartz Lamps produce UVC and UVV (both ...

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