voc gas dilution Articles

  • Minimizing Operating Costs in VOC Abatement Equipment

    Untitled Document As governmental regulations of environmental emissions become more restrictive, the average concentration of Volatile Organic Compounds (VOC's) has decreased as more ...

  • The NILU tracer gas technique

    A tracer gas technique has been developed by the Norwegian Institute for Air Research (NILU) to study emission rates, dilution and diffusion of gases. The technique has been applied in several countries to quantify diffuse VOC leakages from refineries, petrochemical plants and oil production platforms.  The tracer gas techniqueThe dual tracer gas system developed by NILU has been applied in ...

  • Off-Gas Treatment Technologies for Soil Vapor Extraction Systems: State of the Practice

    Untitled Document EXECUTIVE SUMMARY This document provides state-of-the-practice information on off-gas treatment technologies for soil vapor extraction ...

  • Vertical and Diurnal characterization of volatile organic compounds in ambient air in Urban areas

    More than half of the world’s population lives in cities, and their populations are rapidly increasing. Information on vertical and diurnal characterizations of volatile organic compounds (VOCs) in urban areas with heavy ambient air pollution can help further understand the impact of ambient VOCs on the local urban environment. This study characterized vertical and diurnal variations in ...

  • Detection of petroleum-contaminated soils using Equilibrium Headspace and Methanol Extraction

    Petroleum spills and leaking underground storage tanks comprise a significant portion of remediation projects. Soil removal and disposal determined based on the contaminants and concentrations present. Specific target analytes are associated with this type of contamination. A number of these compounds are classified as volatile organics and are used to assess the severity of the contamination, ...


    By PerkinElmer, Inc.

  • Case study - Pharmacuetical Company chooses the QUADRANT NRV Thermal Oxidizer

    Faced with meeting the needs of their Pharma Industry MACT Standards, one Fortune 100 Pharmaceutical Manufacturer called on Catalytic Products International, Inc. The challenge for Catalytic Products International was to design a system that was able to process the ultra-high LEL (high concentration of VOC’s) and deal with corrosive acids produced in the process off gas and the ...

  • Product Spotlight: Regenerative Thermal Oxidizer case study

    Oxidizer case histories in the pharmaceutical industry The pharmaceutical industry faces unique challenges in complying with environmental pollution and emission control regulations. Three pharmaceutical process case studies are examined: fluidized bed drying, tablet coating and reaction vessels, and batch operations. Recently, a contract drug manufacturing company faced violation ...

  • Controlling Pharmaceutical Coating & Drying Process Emissions

    Capturing and destroying harmful emissions from pharmaceutical processes can be challenging. It’s not because the volatile organic compounds (VOCs) are difficult to destroy using catalytic or thermal techniques. It’s because their concentrations can be so high. These process streams raise safety concerns, both when they’re collected in vents and when they reach the final ...

  • Clearing the air: the use of bio-oxidation for industrial air emissions control

    The wood products industry began rather ardous road to emissions control in the early 1990s with the first installation of a thermal oxidizer (an RTO) at a California MDF facility, for volatile organic compound (VOC) control. During the ensuing years, virtually every panel board facility has had to control emissions of VOCs, and up until the last few years, always with some sort of thermal ...


  • US EPA airmOzone TESTS

    The US EPA leads Photochemical Assessment Monitoring Stations programs (PAMS) for more than 15 years and many equipments used at PAMS sites are old and need to be replaced. That is why US EPA has conducted a material review of fully automatic GC units able to by analyze the 56 VOC ozone precursors of the PAMS list. They planned to perform an evaluation in two steps : - Laboratory evaluation of ...


    By Chromatotec Group

  • Case study - Petro-Chemical Processor meets National Emission Standards for Hazardous Air Pollutants

    A multitude of chemical and petroleum processing facilities across the country are now faced with having to meet new National Emission Standards for Miscellaneous Organic Chemical Manufacturing. One specific NESHAP is 40 CFR part 63, subpart FFFF. A facility must be a major source of HAP emissions Process units that: Produce organic chemicals that are not subject to other MACT ...

  • Case study: MDI production plant

    Overview A major chemical manufacturer required a pollution control system to destroy 99.9% of the halogenated volatile organic compounds (VOCs) and hazardous air pollutants (HAPs) emitted during the MDI manufacturing process. MDI is a chemical commodity used as a lightweight insulating material for ice chests and coolers as well as for sound and collision insulation in automobile ...

  • Petro-chemical processor meets national emission standards for hazardous air pollutants

    A multitude of chemical and petroleum processing facilities across the country are now faced with having to meet new National Emission Standards for Miscellaneous Organic Chemical Manufacturing. One specific NESHAP is 40 CFR part 63, subpart FFFF. The applicability of meeting this NESHAP is: A facility must be a major source of HAP emissions Process units that: Produce organic chemicals that are ...

  • EPA - China case study

    The first online air quality monitoring network for a 27 km2 industrial area The monitored area Situated south of Shanghai, in Zhejiang province Heavily industrialized area Main activity: fine chemicals 10 plants under surveillance, under the authority of the Chinese governmental agency for environmental protection (EPA) ...


    By Alpha MOS Environment

  • Cellulosic biofuel plant

    Cellulosic Biofuels meets National Emission Standards for Hazardous Air Pollutants A multitude of new cellulosic bio-fuel processing facilities across the country are now faced with having to meet new National Emission Standards for Miscellaneous Organic Chemical Manufacturing. One specific NESHAP is 40 CFR part 63, subpart FFFF. The applicability of meeting this NESHAP is: A facility must be a ...

  • Cellulosic biofuels meets national emission standards for hazardous air pollutants

    Cellulosic Biofuels meets National Emission Standards for Hazardous Air Pollutants A multitude of new cellulosic bio-fuel processing facilities across the country are now faced with having to meet new National Emission Standards for Miscellaneous Organic Chemical Manufacturing. One specific NESHAP is 40 CFR part 63, subpart FFFF. The applicability of meeting this NESHAP is: A facility must be a ...

  • Case study - Reactor vent emission control

    OVERVIEW Many chemical and petroleum companies use batch reactors to make their products.  These reactors typically have vents which are opened and closed during emptying, filling, mixing, heating or cooling and other steps of the production process.  The gases coming from these vents must be controlled under most government regulations.  Generally speaking, the ...

  • Case study - Destruction of inert process emissions

    Many chemical companies use batch reactors to make their products.  These reactors typically have vents which are opened and closed during emptying, filling, mixing, heating or cooling and other steps of the production process.  The gases coming from these vents must be controlled under most government regulations.  Generally speaking, the emissions produced are inert (little or no ...

  • Composting

    Introduction Composting is a controlled biological process by which organic contaminants (e.g., PAHs) are converted by microorganisms (under aerobic and anaerobic conditions) to innocuous, stabilized byproducts. Typically, thermophilic conditions (54 to 65 °C) must be maintained to properly compost soil contaminated with hazardous organic contaminants. The increased temperatures result from heat ...

  • Properties and Behavior of Fuels

    Fuel contaminants are generally nonhalogenated. Information presented for nonhalogenated VOCs and nonhalogenated SVOCs may also be appropriate for many of the fuel contaminants presented in this subsection. Contamination by fuel contaminants in the unsaturated zone exists in four phases: vapor in the pore spaces; sorbed to subsurface solids; dissolved in water; or as NAPL. The nature and extent ...

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