VOC Monitoring Articles

  • Combined use of ISCO and ISCR to treat CVOCs at industrial site in Texas, USA

    Groundwater at an industrial site in Texas is impacted with Chlorinated Volatile Organic Carbon’s (CVOCs), primarily PCE and TCE, from historical waste disposal. The topography at the site slopes steeply towards a small channel where the groundwater discharges. Depth to groundwater ranges from approximately 20 ft bgs at the source area to 1 ft bgs close to the channel. The soil consists of silty ...


  • TVOC measurement for LEED/green building evaluation

    Total Volatile Organic Compounds (TVOC) may be evaluated when building designers/managers are pursuing the Leadership in Energy and Environmental Design Green Building Rating System for New Construction (LEED-NC) EQ Credit 3.2. The latest LEED-NC guidance document specifies that the maximum allowed concentration of TVOC measured in a building (post construction, pre-occupancy) is 500 µg/m3; the ...


  • Hazardous Landfill Excavation - VOC Control, Vertical Surface

    Products & Equipment Used: Pneumatic Foam Unit 1600/40 AC-912 Long Duration Foam Application summary: Management at the Adams Center (IN) Commercial Hazardous Waste Landfill detected contaminants in their secondary leachate containment system, indicating a leak in the liner system. They decided to excavate the immediate area in order to ...


    By Rusmar Inc.

  • Emission of volatile organic compounds from solid waste disposal sites

    The emission of volatile organic compounds (VOCs) from a solid waste disposal site for municipal solid wastes was quantified. The VOCs contained in the landfill gas taken at the site were benzene, toluene, xylenes, ethyl benzenes, and trimethyl benzenes, while the concentrations of chlorinated compounds were very low. The concentration of benzene in the landfill gas samples ranged from below the ...


    By SAGE Publications

  • Mechanisms for formation of organic and inorganic by-products and their control in nonthermal plasma chemical processing of VOCs

    This paper presents the major by-products derived from Nonthermal Plasma (NTP) chemical processing of different types of Volatile Organic Compounds (VOCs), mechanisms for their formation, effects of reactor types and additives such as water and gaseous oxygen on by-product distribution, and safe operations of NTP reactors for the removal of VOCs.Keywords: VOC removal, volatile organic compounds, ...


    By Inderscience Publishers

  • Relation between ozone levels and NOx and VOC emissions in the Sao Paulo Metropolitan Area for an episode of August, 1998

    At present, major efforts in air pollution control for urban areas are oriented to reduce ozone levels to below standards. Models are a useful tool for air quality assessment and they can help to select the best strategy plan to reduce ozone levels in a polluted area. Like other large cities in the world, Sao Paulo Metropolitan Area (SPMA) has registered high levels of ozone and particulate ...


    By Inderscience Publishers

  • Pilot-scale compost media biofilter treatment of volatile organic compounds

    The compost media biofilter is one of the most important biological processes applied to treat waste gases. Research on a pilot-scale compost media biofilter treatment of volatile organic compounds (VOCs) was performed. The volume of biofilter media was 4.3 m3 and the biofilter operated for 57 days. Fluctuation of water content in the biofilter media was investigated. With continuous switching of ...


    By BioCycle Magazine

  • EPA and DPR Compliant Letter

    Department of Pesticide Regulation Mary-Ann Warmerdam Director Arnold Schwarzenegger Governor 1001 I Street · P.O. Box 4015 · Sacramento, California 95812-4015 · www.cdpr.ca.gov A Department of the California Environmental Protection Agency June 25, 2008 ENF 08-17 TO: County Agricultural Commissioners SUBJECT: ...

  • Modeling of air stripping from volatile organic compounds in biological treatment processes

    The removal of volatile organic compounds from biological treatment processes occurs through several mechanisms. These include biodegradation, adsorption onto solids, and air stripping or volatilization to the atmosphere. Volatilization results in fugitive emissions to the atmosphere, which is largely uncontrolled. Recent regulations have called ...

  • Volatile organic compounds emitted from hardwood drying as a function of processing parameters

    During the drying of wood, volatile organic compounds are emitted. These emissions contribute, in the presence of nitrogen oxides and sunlight, to the formation of ground level ozone and other harmful photo-oxidants. Emissions of volatile organic compounds from the drying of birch sawdust in a spouted bed were analyzed with a flame ionization detector and with a gas chromatograph-mass ...

  • Annual European Community LRTAP Convention Emission Inventory report 1990–2005

    This is the annual European Community Long‑range Transboundary Air Pollution (LRTAP) Convention Emission Inventory report. The report, and its accompanying data, are provided by the European Commission (on behalf of the European Community), as an official submission to the secretariat for the Executive Body of the LRTAP Convention. Under the LRTAP Convention, Parties are requested to report ...

  • Using Deconvolution Software to Identify Unknown Compounds

    Many software packages for the qualitative and quantitative analysis of GC/MS data allow the operator to indicate the target compounds of interest and generate a report that includes the observed concentration of each target compound in the sample. Given the targeted nature of the analysis, additional (i.e. unexpected) compounds present in the sample are not identified, unless the operator ...


  • Volatile organic compounds in the nation’s ground water and drinking-water supply wells

    ABSTRACT Volatile organic compounds (VOCs) are produced in large volumes and are associated with a myriad of products, such as plastics, adhesives, paints, gasoline, fumigants, refrigerants, and drycleaning fluids. Widespread and long-term use of VOCs and their ability to persist and migrate in ground water raise questions about possible adverse effects on the environment, including ...

  • Evaluation of Spatial and Temporal Variability in VOC Concentrations at Vapor Intrusion Investigation Sites

    ABSTRACT As vapor intrusion has become an increasing concern at corrective action sites, the USEPA and a number of state regulatory agencies have recently issued guidance documents covering the collection of subsurface gas, and above-ground air samples during vapor intrusion investigations. Most of these guidance documents do not provide specific recommendations concerning the number of each ...


  • Evaluation of the snap sampler for sampling ground water monitoring wells for VOCs and explosives

    A series of laboratory and field studies were conducted to determine the ability of the Snap Sampler to recover representative concentrations of VOC and explosives in ground water. For the laboratory studies, statistical analyses of the data (for each analyte) were conducted to determine if the concentrations of analytes in samples taken with the Snap Sampler were significantly different from ...


    By ProHydro, Inc.

  • Ambient Air Quality in India - An Alarming Report

    Are we mortgage India against air pollution? The answer may be “Yes”. The reason is India has witnessed a phenomenal increase in the number of industries and vehicles in the last decade, along with the mushrooming of cities. As a consequence, there has been a dramatic deterioration in the quality of urban air in most regions of the country particularly in big cities like Delhi, Mumbai, Kolkatta ...


  • Oxygen Release Compound - Canada Case Study

    EHC-O Oxygen Releasing Compound - ES&E Magazine (May 2007) A whimsical comment by the author Michael McClary compels one to realize that more intuitive processes can be overlooked when considering technology’s abilities to improve our natural environments. He said: “Irrigation of the land with seawater desalinated by fusion power is ancient. It’s called rain.” In situ treatment of ...


  • Grand Canonical Monte-Carlo simulations for VOCs adsorption in non-polar zeolites

    Removal of Volatile Organic Compounds (VOCs) by sorption in non-polar zeolite materials (AFR, BOG, LTL) has been tested by Grand Canonical Monte-Carlo (GCMC) molecular simulation techniques. Computational details and simulation procedure were validated by comparison with experimental data reported in literature. Results showed promising adsorption properties in the low pressure range. The ...


    By Inderscience Publishers

  • Installation of EHC for VOCs

    Project Installation of EHCT for Treatment of Chlorinated Volatile Organic Compounds Summary Adventus installed 1 ton of EHC® into a trench and 3 tons of EHC® into an open excavation at a site that has groundwater contaminated with a mixture of chlorinated solvents. The Challenge Two areas of contamination were targeted for ...


  • Characterisation of multiple interior noise metrics and translation of the voice of the customer

    Several metrics represent noise characteristics such as engine idle, acceleration, and rough and smooth road noise because many factors affect vehicle noise. Engineers have to juggle several metrics to satisfy heterogeneous customer needs. All important design variables, which are often well correlated, should be included in translating the Voice Of the Customer (VOC) because the noise ...


    By Inderscience Publishers

Need help finding the right suppliers? Try XPRT Sourcing. Let the XPRTs do the work for you