Clean Air Systems Articles

  • Assessing Clean Air Zones with ADMS-Urban

    CERC develop the world-leading model ADMS-Urban which is designed for assessing air quality interventions such as Clean Air Zones (CAZ) and Low Emissions Zones (LEZ). For example, ADMS-Urban is being used by · Transport for Greater Manchester to model CAZ options ...

  • Chromatotec in International Labmate

    Find out Chromatotec expertise in the last issue of International Labmate with an article on “On-Line Fast Analysis of AMC from ppt to % levels in Clean Air Room". The complete article is available in October/November 2017 issue of International Labmate (Volume 42 Issue 7), or read it  ...


    By Chromatotec Group

  • James V. Aidala Quoted by Bloomberg BNA Daily Environment Report Discussing Henry Darwin’s Appointment as EPA Assistant Deputy Administrator

    On June 16, 2017, James V. Aidala, Senior Government Affairs Consultant with Bergeson & Campbell, P.C. (B&C®), was quoted in the Bloomberg BNA Daily Environment Report article “Former Arizona Environment Chief Tapped as EPA's COO.” Henry Darwin, a longtime government official and former director of the Arizona Department of Environmental Quality, will serve as EPA ...


    By Bergeson & Campbell, P.C.

  • 55 years of haze: How plane bound for KL overflew to Singapore when it was all hazy on Oct 19, 1961

    Good weather may have kept the haze away from Singapore for now, but it is unlikely that the seasonal plague is gone for good. Plumes of smoke haze have clouded Singapore’s skies almost every year from as far back as the 1960s, with the first haze episode reported on Oct 19, 1961. We look back at 55 years of haze history: 1. When it all started A heavy haze ...


    By Camfil Ltd

  • Automotive: At Sandvik Coromant, Clean Air Group Scrubber Handle Emissions Emergencies case study

    Mr. Tahvanainen heads up a staff of eight maintenance personnel and a supervisor. He is a mechanical engineer with a background in power production and thermodynamics. Editorial Background: Sandvik Coromant of Fair Lawn, NJ is part of Sandvik’s tooling division. The overall Sandvik Corporation employs 35,000 in one hundred and thirty (130) countries. ...


    By CR Clean Air Group, LLC

  • Dry/Wet Scrubbers for Clean Air Compliance

    Air-scrubbing venturis and towers may be the answer to clean air compliance for small- to medium-sized companies. Forthcoming requirements of the Clean Air Act Amendments of 1990 will inventory many more specific chemicals considered hazardous. From acetaldehyde to xylenes, the list regulated under the air taxies program includes 189 hazardous air pollutants (HAPs). That number may ...


    By CR Clean Air Group, LLC

  • Pharmaceutical: Scrubber Eliminates Ethylene Oxide Case Study

    A contract sterilization service uses a single-stage scrubber to convert this hazardous gas to inert ethylene glycol. ETO Sterilization Inc. provides contract sterilization services for hundreds of northern New Jersey customers, concentrating on spices and herbs, cosmetic ingredients and medical supplies. Two of the largest ethylene oxide sterilization vessels in the world are in operation ...


    By CR Clean Air Group, LLC

  • Medical Industry: Scrubber Eliminates Ethylene Oxide Case Study

    A contract sterilization service uses a single-stage scrubber to convert this hazardous gas to inert ethylene glycol: ETO Sterilization Inc. provides contract sterilization services for hundreds of northern New Jersey customers, concentrating on spices and herbs, cosmetic ingredients and medical supplies. Two of the largest ethylene oxide sterilization vessels in the world are in operation ...


    By CR Clean Air Group, LLC

  • Industrial applications – Air analysis in clean air room - Case study

    Context & Challenges To ensure people’s safety and a good repeatability of industrial process, the analysis of ambient air is crucial. Especially, electronic boards are produced in clean air room by complex lithographic process using very reactive chemicals. The nature and concentration of volatile compounds can be different depending on the chemical process and can also vary ...


    By Chromatotec Group

  • Case Study N°I1 – Industrial Applications – Air Analysis i n Clean Air Room

    Context & Challenges To ensure people’s safety and a good repeatability of industrial process, the analysis of ambient air is crucial. Especially, electronic boards are produced in clean air room by complex lithographic process using very reactive chemicals. The nature and concentration of volatile compounds can be different depending on the chemical process and can also vary ...


    By Chromatotec Group

  • Ineffective cleaning in generic baghouses

    ABSTRACT: Background In a typical “generic” baghouse application, the cleaning is accomplished by back-flushing the filter with compressed air that travels through an orifice hole in a purge tube (blow pipe) and through a venturi. A typical generic cleaning system allows dust to be filtered at an air-to-cloth ratio of 5:1. That means for every 5 CFM of airflow, there is 1 square foot ...


    By Scientific Dust Collectors

  • Effects of the peroxisome proliferator di(2‐ethyihexyl)phthalate on cell turnover and peroxisome proliferation in primary chick embryo hepatocytes

    The peroxisome proliferator (PP) di(2‐ethyIhexyl)phthalate (DEHP) is widely used as a plasticizer and can contaminate air, water, and soil. As yet, no data have been published on its potential to induce changes in cell growth of non‐mammalian hepatocytes. In the present study, the effects of DEHP on cell turnover and induction of peroxisome proliferation were evaluated in primary hepatocyte ...


    By John Wiley & Sons, Ltd.

  • Ozone precursor analysis using a thermal desorption-GC System

    In the United States, the Clean Air Act of 1970 gave the U.S. Environmental Protection Agency (EPA) responsibility for maintaining clean air for health and welfare. Six parameters are measured routinely in ambient air: SOx, NOx, PM10 (particulate matter less than 10 microns), Pb, CO and ozone. In the 1990 Clean Air Act Amendments, Title 1 expanded the measurements in air to include volatile ...


    By PerkinElmer, Inc.

  • Technology: clean air’s unsung hero

    Last year, we celebrated the 40th anniversary of the U.S. Clean Air Act (CAA) and the 20th anniversary of the 1990 Amendments to the CAA. The CAA has been a huge success. From 1990 to 2008, emissions of six common pollutants were down 41%, while gross domestic product grew 64%. Emissions of volatile organic compounds dropped 31%, carbon monoxide dropped 46%, and sulfur dioxide dropped 51%. Lead ...

  • GHG regulation under the clean air act – recent developments

    EPA’s GHG Tailoring Rule and Senate Action On October 27, 2009, EPA published the Prevention of Significant Deterioration (PSD) and Title V Greenhouse Gas (GHG) Tailoring Rule in the Federal Register, followed by a 60-day public comment period that ended on December 28, 2009. The proposed rule represents EPA’s effort to decrease the number of sources subject to major source ...


    By Trinity Consultants

  • Big Clear Sky – A short history of the Clean Air Act

    Major advances over 50 years have led to cleaner air and groundbreaking technology. The detrimental impact of industrialization to air quality in the United States went unchecked through federal legislation for most of the first half of the 20th Century. But following the 1948 industrial catastrophe in Donora, Pennsylvania – where a cloud of smog killed 20 and injured thousands – regulation of ...

  • Regulation of greenhouse gases under section 115 of The Clean Air Act

    Section 115 of the Clean Air Act, among the various options under the current act, may offer EPA the most effective, flexible, economically reasonable, and legally supportable means by which to regulate greenhouse gas emissions. The authors argue that Section 115, the section explicitly crafted to address international air pollution, has the potential to provide an appropriately flexible path ...


    By Bloomberg BNA

  • Bottom line on regulating greenhouse gases under the clean air act

    How can the EPA regulate GHGs? Doesn’t the Clean Air Act only apply to air pollutants? An April 2007 Supreme Court decision (Massachusetts v. EPA) ruled that GHGs are air pollutants under the Clean Air Act. The court instructed the EPA to decide whether GHG emissions endanger public health and/or welfare, or if current science is too uncertain to make a reasonable judgment. In response to the ...

  • The US Clean Air Act: Improving air quality and tracking greenhouse gas emissions?

    The US Clean Air Act is a federal law designed to reduce air pollution in order to improve the nation’s overall air quality. The intent of the federal law is to identify and reduce harmful substances that weaken the stratospheric ozone layer and continue to contribute to global climate change.Many of these pollutants, refrigerant gases, or Greenhouse Gases (GHGs) can be found within companies, ...


    By Verisae

  • The high stakes of California SIPs

    State Implementation Plans, or SIPs, have long served as the crucial roadmaps that states use to plot out how they will meet federal health standards for air quality. Since the early days of the national clean air program, the SIP has been the tool used by federal regulators to evaluate progress in reducing pollution across the country. A well-organized and comprehensive SIP shows the public how ...

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