benzene gas monitor Articles

  • Case study – benzene contamination retail gas station, Colorado

    Introduction The scope of work for this site included an expansion of an existing soil venting system to remediate impacted soil and injection of a carbon-based petroleum degrading product to remediate long-term groundwater impacts. By using a combination of remediation technologies, including LT Environmental’s (LTE) TerraCert™ program, the overall goal of a cost effective cleanup ...

  • Case study – benzene contamination - tank battery, Weld County, Colorado

    Introduction LTE was requested by Devon Energy Corporation (Devon) to remediate residual soil and groundwater impacts at an exploration and production site in Weld County, Colorado. Soil impacts were found from the surface to 24 feet below ground surface (bgs) and were a result of produced water sump and aboveground storage tank overfills. Benzene concentrations in the groundwater were up to ...

  • Biofuels Gas Monitoring

    The Customer The Company is one of the world’s leading developers and producers of advanced fuels and green chemicals. The Process The Company uses a gasification process that breaks down wood chips, waste and other feedstock using plasma technology. The process produces a uniform synthetic gas (syngas) that is used to power their turbine engines. ...

  • Application of nanocrystalline metal oxide gas sensors for air quality monitoring

    Increasing concern regarding health effects caused by air pollution, together with the limited spatial resolution achievable with conventional monitoring stations, have driven efforts to develop inexpensive metal oxide gas sensors for air quality measurements. The sensing mechanism is dependent on physicochemical reactions between adsorbed gas molecules and oxygen species on the oxide surface, ...


    By Inderscience Publishers

  • Retail Store, Loganville, GA

    Prior to EXO TECIfs involvement. extensive soil excavation was performed of the former gasoline UST pits followed by an unsuccessful injection using only hydrogen peroxide. EXO TECH was then contracted and mobilized to the site and installed additional injection wells and performed three small dose injections using persulfate activated with hydrogen peroxide. Due to preferential ...


    By Exo Tech Inc.

  • Air Monitoring for the Gulf Oil Spill

    Ambient air monitoring is a priority in the ongoing efforts to contain and manage the oil spill from the Deepwater Horizon in the Gulf of Mexico. The following provides information about the kinds of airborne contaminants that are currently being monitored in the Gulf, how they are collected and how they are analyzed. For a given project, a suitable sampling plan – developed by ...


  • BTEX monitor, equal performances to laboratory chromatographs

    Environnement S.A leveraged its technical leadership in this field with an extensive experience, being one of the first companies creating its first BTEX analyser almost 20 years ago. The VOC72M third generation of ...


    By Environnement S.A

  • IR Gas Detector Provides Rapid Response

    The advanced Model IR400 Point IR Combustible Gas Detector from General Monitors features an industry-leading three-second T90 response time to the presence of combustible hydrocarbon-based gases, which allows plant operators to respond quickly to gas leaks and ...


    By General Monitors

  • Monitoring leaks in Heat exchangers - Case study

    The Situation A California refinery produces xylene for use as commercial product and a precursor for petrochemical manufacturing. A primary component to the production of xylene is the isolation and purification of the chemical from a complex mixture of petroleum hydrocarbons. Steam based heat exchangers are used to process the xylene. Inherent to the design and rough duty heat ...

  • Designing and Implementing Perimeter Air Monitoring Programs

    Perimeter or fenceline ambient air quality and meteorological monitoring programs have become increasingly valuable at hazardous waste, landfill, dredging, ports, and MGP remediation sites. Air quality monitoring programs protect public health and reduce owner liability ...


    By AECOM

  • FTIR gas analysis improves container safety

    Introduction Entry to freight containers represents a significant hazard to staff responsible for inspection, stuffing or destuffing because of the large number of airborne chemicals that can be present. Research in Germany and the Netherlands found hazardous levels of gases and vapours in around 20% of all containers and this level of contamination is now accepted as commonplace. It ...


    By Gasmet Technologies Oy

  • Photodegradation of 4-chloronitrobenzene in the presence of aqueous titania suspensions in different gas atmospheres

    The photocatalytic degradation of 4-chloronitrobenzene (4-CNB) was carried out using Degussa P25 TiO2 as photocatalyst in three different gas atmospheres: nitrogen, oxygen, and ozone. The total organic carbon (TOC) and inorganic anions including chloride, nitrite, and nitrate anions were measured to monitor the mineralization processes, while the degradation of 4-CNB and the formation of ...


    By IWA Publishing

  • Case study N°AA7 – Ambiant air monitoring – VOC Purge & trap

    Context & Challenges Volatile organic compounds (VOC) can be dissolved in water. Sometimes water is polluted and to study contamination of VOC in finished drinking water, VOC must be measured. Chromatotec Solutions Chromatotec has developed a specific system for the measurement of VOC in water: a Purge & Trap system, the airmoPURGE. The ...


    By Chromatotec Group

  • Why high temperature combustion of landfill gas?

    Due to the accumulation of knowledge and the tightening of environmental law, the landfill technology has increasingly become concerned with the management of trace compounds in landfill gas. With landfill gas, contamination is through sulphur, chlorine, fluorine, halogenated hydrocarbons and heavy metals. Other trace elements such as volatile organic compounds (VOC), impose environmental ...


    By Hofstetter BV

  • Monitoring of Recent Atrazine Occurence in River Sava and Phenol in River Ibar

    Untitled Document RHMS-Environmental Division- Water Quality Control, 11000 Beograd, Kneza Višeslava 66* The ...


  • Praxair Selects Baseline-MOCON’s New BevAlert Gas Analyzer To Improve Detection Sensitivity Of CO2 Impurities

    Lyons, CO — Praxair, Inc. has upgraded its carbon dioxide (CO2) gas analysis with the installation of multiple BevAlert™ Model 8900 at its plants across North America and select international locations.The BevAlert Model 8900 new gas chromatograph, from Baseline-MOCON, Inc., a subsidiary of MOCON monitors trace impurities in CO2 (and other gases) while setting new standards for analytical ...

  • Halliburton hunts new bacteria killer to protect Shale-gas boom

    Halliburton Co. and Schlumberger Ltd., trying to forestall a regulatory crackdown that would cut natural-gas drilling, are developing ways to eliminate the need for chemicals that may taint water supplies near wells. At risk is hydraulic fracturing, or fracking, a process that unlocked gas deposits in shale formations and drove gains in U.S. production of the fuel. Proposed regulations might slow ...


    By Biolargo, Inc.

  • Biofiltration systems for the treatment of waste gas from industrial plants

    Bord na Móna Environmental Ltd have considerable experience in the field of biological air filtration (600 installations). Initially, the majority of installations were on Municipal and Industrial Wastewater applications. This was quickly followed by Municipal Solid Waste, an application Bord na Móna jointly developed with its Italian partners Air Clean srl. Since 2000, Bord na Móna have ...


    By Anua - Bord na Móna Limited

  • New air quality rules challenge oil & natural gas industry

    EPA Administrator signed a suite of proposed new air regulations affecting both the Production/Processing and Transmission/Storage sectors of the oil and natural gas industry. The proposed rules mandate the use of emission controls as well as work practices through two different air regulatory programs – New Source Performance Standards (NSPS) and National Emissions Standards for Hazardous ...


    By Trinity Consultants

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