ozone sensing Articles

  • Optical Remote Sensing in the United States

    Recent studies that involve the use of optical remote sensing (ORS) techniques to measure gaseous and particulate pollutants have rekindled interest among environmental researchers and regulators in this decades-old technology. This article describes some of the key research and development projects that are helping restore ORS-based methods to the list of currently available emissions ...


    By Arcadis

  • Ozone treatment for cooling towers

    Abstract The use of ozone as a maintenance treatment for cooling towers has good potential for operation and maintenance savings in the Federal secior. A small amount of ozone acts as a powerful biocide thai decreases or nearly eliminates the need to remove quantities of water from the cooling tower in order to decrease the concentration of organic and mineral solids in the system. ...


    By Zentox Corporation

  • Remote sensing of particular pollution from space: Have we reached the promised land?

    The recent literature on satellite remote sensing of air quality is reviewed. 2009 is the 50th anniversary of the first satellite atmospheric observations. For the first 40 of those years, atmospheric composition measurements, meteorology, and atmospheric structure and dynamics dominated the missions launched. Since 1995, 42 instruments relevant to air quality measurements have been put into ...

  • Remote sensing of particulate pollution from space: Have we reached the promised land?

    This paper follows presentation and publication of the Hoff and Christopher 2009 Critical Review and represents an integration of discussants’ views of their paper. The discussants’ comments are organized beginning with a note on the history of satellite sensing, followed with a brief discussion of the strengths and weaknesses of satellite observations relative to air quality management needs. ...

  • The Kansas City, Missouri, Ground-Level Ozone (GLO) Project: A Community-Based Air Pollution Field Experiment

    Tropospheric ozone concentrations for Kansas City are well known on a regional scale. The Kansas City, Missouri, ground-level ozone (GLO) project measured outdoor ozone concentrations using passive sensing devices (PSDs) on a neighborhood scale. Highly resolved exposure maps were made based on the detailed air quality observations collected during the seven week sampling study during the summer ...

  • Use of Monte Carlo uncertainty analyses to evaluate differences in observed and predicted ozone concentrations

    It is now possible to carry out Monte Carlo uncertainty studies with large photochemical grid models such as UAM-IV. The current study uses information on the effects of uncertainties in 109 input variables on UAM-IV model predictions of maximum daily one-hour averaged ozone concentrations at 29 monitoring sites in the New York City UAM domain for the 8 July 1988 ozone episode. Fifty Monte Carlo ...


    By Inderscience Publishers

  • Pigment-based identification of ozone-damaged pine needles as a basis for spectral segregation of needle conditions

    Received for publication June 6, 2008. Air pollution affects large areas of forest, and field assessment of these effects is a costly, site-specific process. This paper establishes a biochemical basis for identifying ozone-damaged pine trees to facilitate efficient remote sensing assessment of air pollution damage. Several thousand live needles were collected from ponderosa pine (Pinus ponderosa) ...

  • Bon Secours memorial regional medical center

    Situation: In 1997, a Zentox ozone cooling water treatment system was specified for water treatment of the hospital’s four 400-ton towers. The medical center, a state-of-theart facility, serves a wide range of patient needs at the Hanover Medical Park in Richmond, Virginia User comment from Phil Vierela, Administrative Director of Facilities: ...


    By Zentox Corporation

  • Intellisenc Building Air Quality Controllers control CO2, CO, VOC, O3, Humidity and temerpature.

    The quality of the air we breathe indoor (Indoor Air Quality, IAQ) is typically defined by the air chemical or gas composition and particulates. The sensors available today for sensing the gas composition of IAQ have many features and options. There is a wide application base for IAQ sensing with the most common being the regulation of HVAC ventilation systems for lower energy cost. Using an IAQ ...


  • Sustainable package design

    Companies have a vast number of different package design options available. But today the important question is how sustainable they are? Should they use paper or plastic? When does it make sense to use material combinations and what are their environmental impacts? Answers to these questions are provided in a Life Cycle Assessment study (LCA) that PE INTERNATIONAL has conducted for ...


    By thinkstep

  • Want to change the future? Pay attention to the past.

    From Mandela to MLK to McKibben, history offers lessons aplenty for climate activists We all know the plotline: Single-minded, passionate activists attempt to take on immense money and power, hidebound ideology and bureaucratic paralysis to turn the tide on the most important issue ever. We could be talking about climate change. But we could also be talking about the abolition of ...


    By Ensia

  • What is an `IAQ Profile`?

    The 'IAQ Profile' is a visual presentation of indoor air quality. PPM Technology's range of IAQ Monitors enable continuous monitoring of Indoor Air Quality; this precisely describes changes in concentration levels of selected air quality parameters over a period of time.  The IAQ Profile provides the knowledgebase and database for improving indoor air quality efficiently and ...


    By PPM Technology

  • Antibacterial Ingredients Ruled Unsafe. Hallelujah, the FDA has awoken!

    Today’s FDA ruling has got us booming! The debate between cleaning product makers, environmentalists and researchers has finally ended. The FDA ruled today that it is no longer considering antibacterial ingredients in soaps to be safe. This is a big deal for us as we have long discussed the harmful effects of killing “good” and “bad” bacteria as ...


    By Better Air LLC

  • WWTP Covers Its Grit Tanks to Help Address Odor Concerns

    The Customer: The Georgetown Wastewater Treatment Plant (WWTP) located in Ontario, Canada, provides industrial and municipal wastewater treatment for the urban area in the Town of Georgetown. The plant treats approximately 17.5 ML of wastewater per day. It is sized to accommodate the wastewater treatment needs of a local dairy processing facility, the plant’s largest industrial ...

  • Indoor Air Quality Myths Debunked

    Today’s buildings, whether it is a home, office, manufacturing plant, hospital, etc., are more energy efficient; however, they also foster a potentially harmful environment. Indoor Air Quality (IAQ) has become a rising concern in the HVAC industry. Poor IAQ can cause a number of health issues such as, allergies, dryness and irritation to the eyes, nose, throat, and skin. It can also cause ...

  • The Right Mix for Clean Air

    Reducing air pollution is an increasingly important topic all around the world. Many governments—also in developing countries—set new limits for emissions such as nitrogen oxides in flue gas. Sulzer offers advanced mixing technology for flue gas cleaning. The installation in a large power plant shows that these high-performance mixers can cope with the most difficult requirements. ...


    By Sulzer

  • Living within Earth`s “Planetary Boundaries”

    Borneo’s lowland rainforests are one of the most biodiverse regions on earth, home to unique habitats, thousands of species of plants, and animals like Proboscis monkeys, Sumatran rhinoceroses, and orangutans. Yet more than 75 percent of its forests have been destroyed in recent decades. “Now it looks like something out of Lord of the Rings, due to hardwood harvesting and huge palm ...

  • 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

  • Biomass energy outlook

    Over the last three or four weeks, my newsletter, Burning Bio News, has been oddly extreme. Timothy Searchinger, Princeton University, is churning out more antibiofuel hearsay. Dennis Avery, Hudson Institute, was in the news again putting a counter-spin on climate change. The U.S.EPA released its proposed rule for regulation of Greenhouse Gases (GHG) that includes industrial facilities that emit ...


    By BioCycle Magazine

  • Mercury Ban – Printers Unaffected

    The mercury ban debate has been rife with speculation, confusion, strong accusations and well, a little bit of misleading information. So, together with Brendan Perring of Print Monthly I have been getting to the bottom of this tangled web of information. We have been in contact with the National Measurement and Regulations Office (NMRO) to seek clarification, and today I found myself meeting a ...


    By Alpha Cure (UK)

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