air contaminant Articles

  • TCE contamination of the groundwater - Altus air force base

    LOCATION:  Altus Air Force Base, OklahomaPROJECT DATE:  November 2001 to presentCLIENT:  Air Force Center for Environmental Excellence (AFCEE) BACKGROUND: TCE contamination of the groundwater was found at the Altus AFB Site SS-17 at a depth of 7 to 20 feet below ground surface. The aquifer at Altus AFB consists unconsolidated fine-grained alluvial deposits, primarily clay, overlying a fractured ...


    By Terra Systems, Inc. (TSI)

  • 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 ...

  • 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

  • Water contamination problems solved at automobile air bag manufacturing plant

    The Facility Based in a Rocky Mountain state, this facility produces the sodium azide pellets contained inside the air bags for automobiles produced throughout the world. The Problem During the manufacturing of the air bag propellent, frequent equipment washdowns produce large volumes of wastewater that contain sodium azide and metal sulfide salts. Sodium ...

  • Process-generated contaminants

    Overview: There is not currently a formal and universally recognised definition of a process-generated substance. Process-generated contaminants can be generated as emissions from combustion processes, abrasion and/or other processes that physically or chemically degrade or otherwise modify the starting material(s), e.g. degradation/composting of organic materials. Such ...

  • Groundwater contaminated with chlorinated solvents - Air force center for environmental excellence

    LOCATION:  Dover, DelawarePROJECT DATE:  October 1999 to presentCLIENT:  Air Force Center for Environmental Excellence (AFCEE) BACKGROUND: Groundwater contaminated with chlorinated solvents is a common problem to many US Air Force Bases. TSI in conjunction with Solutions Industrial & Environmental Services (Solutions-IES) of Raleigh, NC approached AFCEE with an innovative method utilizing ...


    By Terra Systems, Inc. (TSI)

  • Asbestos contaminated soil removal - Glasgow

    Asbestos Contaminated Soil Remediation Client: Hawkshead Properties Ltd Challenge: Removal of asbestos contaminated demolition material adjacent to residential housing and canal. Monitor air borne dust particulates and swab cleaned surfaces to validate target levels. Backfill excavations and make safes vertical drops. ...


    By Soilutions Ltd

  • Air pollution and odour control treatment plant of contaminated air during industrial drums and package remediation process

    Customer EuroVeneta Fusti srl is an italian market leader in industrial drums and package recovery, remediation and reuse. Sited in Triveneto, in Mira next to Venice, EuroVeneta Fusti operates old drums collection, processing, regeneration and new ratification of industrial packages (such as ...


    By F.G.M. engineering srl

  • Ultrafine particle and gas contamination of urban air in Seoul, Korea, during winter

    To investigate the contamination characteristics of ultrafine particles and gases originating from vehicle exhaust, data were obtained from one-week intensive monitoring at an urban site in Seoul, Korea during the winter of 2003. The diurnal variations of size-segregated particle concentrations for both ultrafine particles (20?100 nm) and accumulation mode particles (100?600 nm) were very ...


    By Inderscience Publishers

  • Ensuring Contamination Control in Clean Manufacturing Environments with Airborne Molecular Contamination Monitoring info@

    Abstract In clean manufacturing environments, two aspects of molecular contamination need to be understood: (1) the background levels of contamination existing under stable conditions, and (2) the elevated concentrations that occur during contamination events. A new approach to monitoring both aspects of molecular contamination is presented. Recent technical advances have ...


    By Particle Measuring Systems

  • Asbestos contaminated soil case study

    An active gypsum manufacturing facility discovered they had a large area of gypsum waste containing asbestos mixed with soil at the back of their property. The waste had accumulated over the years before the dangers of asbestos were known and now required remediation due to communication wires buried in the waste. Excavators could not be used due to the presence of the communication wires that ...


    By Enviro-Vac Corp.

  • Air as a source of bacterial contamination in a slaughterhouse prior to implementation of hygienic control systems

    The shelf-life, quality and safety of meat can be reduced by bacterial contamination. The limited study of airborne bacteria often means that their impact is overlooked. This research assessed the role of airborne bacteria in the contamination of carcasses during processing in a slaughterhouse prior to implementing hazard analysis and critical control point (HACCP). Aerosolised bacterial counts ...


    By Inderscience Publishers

  • The Key To Controlling Airborne Contamination In Food Processing

    In the food and beverage industry, contamination is always a high priority concern. Small mistakes in handling, preparation, and even in the cleaning of the environment where food comes into contact with surfaces can cause disastrous results that can potentially affect hundreds of thousands of people. Often overlooked is the threat from another source of food contact: air. ...


    By Camfil Ltd

  • Biological Removal of Ammonia from Contaminated Air Streams Using Biofiltration System

    ABSTRACT Ammonia is a colorless, toxic, reactive and corrosive gas with a sharp odor. It is irritating to the skin, eyes, nose, throat, and lungs. Ammonia gas occurs in the environment naturally and is emitted by many industries and, therefore, its control is essential. Biofiltration is a new emerging technology that is being used as a control procedure. This study evaluates the use of a ...

  • Microbial Control and Monitoring in Aseptic Processing Cleanrooms

    Abstract Cleanrooms and associated controlled environments provide the control of contamination (inert particles and microbiological entities) to levels appropriate for accomplishing contamination-sensitive activities. Products and processes that benefit from the control of contamination include those in such industries as aerospace, electronics, food and beverages, cosmetics, general ...


    By Particle Measuring Systems

  • An investigation and remediation of TNT contaminated soils.

    An investigation and remediation of TNT contaminated soils and wastes was conducted at the Apache Powder Superfund Site in Cochise County, Arizona during 1999 and 2000. TNT contamination was most likely the result of salvage operations of World War I munitions. Characterized by a steep hillside and arroyo cutting through the wastes, the site offered challenges of stability, access, health and ...


    By Hargis + Associates Inc

  • Bioremediating Explosives Contaminated Soil

    From the beginning of World War II until the 1970s, the site that is now the Naval Surface Warfare Center in Crane, Indiana (NSWC-Crane) was the home of a major bomb manufacturing operation. Explosive compounds such as TNT, Royal Demolition Explosives (RDX) and Her Majesty’s Explosive (HMX) were handled loose and drifted through air vents. Often, the material settled on the roofs of buildings, ...


    By BioCycle Magazine

  • Site 25 System Slows Down Contamination

    The Air Force has installed dollar $2 million groundwater extraction and granular activated carbon system to slow down the spread of the solvent trichloroethene (TCE) groundwater contamination at Site ...


    By J.C. Palomar, Inc.

  • Water contamination in fuel: cause and effect

    Water exists in three physical states and depending on the surrounding conditions it finds its way to the fuel systems like the high pressure common rail (HPCR) fuel systems on diesel engines. The important point thereafter is to provide the best possible on-engine protection by securing the fuel injector systems from severe damage. As the environmental challenges and emission regulations become ...

  • Air Sparging - Technology Overview

    Air sparging involves injecting a gas (usually air/oxygen) under pressure into the saturated zone to volatilize groundwater contaminants and to promote biodegradation in saturated and unsaturated soils by increasing subsurface oxygen concentrations. Vola tilized vapors migrate into the vadose zone where they are extracted via vacuum, generally by a soil vapor extraction system. The term ...

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