landfill gas detection Articles

  • Gas Detection and Monitoring Systems

    In greenhouse applications, the accurate measurement of a number of environmental parameters such as carbon dioxide concentration, temperature, light intensity, water, humidity, pH and nutrient levels using sophisticated sensors is used to create a controlled environment for optimising plant growth rates while minimising energy usage. Carbon dioxide concentration is also one of the best ...


    By Edinburgh Instruments Ltd

  • TDLAS Gas Detection Instrumentation

    PKL Technologies Inc. manufactures tunable diode laser (TDLAS) based gas detectors and monitors. Spectra-1 open path gas sensors are used in a variety of environmental and safety remote sensing applications. Spectra-1 gas sensors have been designed in a compact, easy to use, robust and portable format. Spectra-1 has been developed using proprietary hardware and software, to produce a low cost ...


    By PKL Technologies Inc.

  • Landfill gas explosive for global warming

    In response to EPA’s 1991 landfill rules that pushed the industry to larger facilities, landfill operator’s today pile and compact trash on the ground into giant mounds in the shape of a four sided pyramid. As originally contemplated, these mounds of trash were encased in liners to keep the wastes dry so contaminants would not be mobilized to leak into groundwater, along with ...


  • Case study - Monitoring landfill gas

    Infrared absorption Infrared absorption is usually the preferred method for measuring methane and carbon dioxide. Most gases absorb radiation in the infrared region. The wavelength of radiation that is absorbed is determined by the natural vibration frequencies of the molecule. These natural frequencies will depend on several factors. Thus different gas molecules have different natural ...


    By Geotech

  • Landfill Gas Clean-up and Upgrading to Hydrogen System

    Quadrogen has extensive knowledge of and experience in biogas and landfill gas clean-up systems technology, design and development. Quadrogen’s Integrated Biogas Clean-up System will remove all sulfur species, siloxanes, chlorides, water, oxygen and other impurities from biogas to the parts per billion level required for reliable and long term operation. Quadrogen also has extensive ...


    By Pioneer Air Systems

  • Monitoring And Analysis of Landfill Gases

    CoGDEM is the trade association representing manufacturers and service providers who are active in the field of gas detection instrumentation and environmental monitoring apparatus. Crowcon Detection Instruments Ltd was one of the founding members of CoGDEM, and in this article their Product Manager of Fixed Systems, Andy Avenell, gives an update on Landfill Gas. Landfill is by far the most ...

  • Portable laser gas detector systems for landfill CH4 and CO2 monitoring

    There has recently been a marked increase in interest in detecting and quantifying emissions of the greenhouse gases (GHG) carbon dioxide (CO2) and methane (CH4) from landfills in North America and Europe. The primary drivers for this increased interest are: new and pending legislation requires demonstrated reductions in GHG emissions; permits to expand existing facilities require more accurate ...


    By Boreal Laser Inc.

  • Aerial Radiation Detection

    In this time of multiple threats to our security: dirty bomb; cyber; shooters in public places; homemade bombs; misinformation; etc. we feel extremely vulnerable; perhaps more vulnerable than ever before. With the advent of Drone technology now available to private citizens, technology previously only held by the military, the opportunity has come to marry Drone Technology with aerial sensors. ...


    By Technical Associates

  • Ontario Landfill Site - Case Study

    A Texas based company with waste management sites around North America have installed electrical generation plants at various locations that use methane collected from the waste. The daily operation of these sites include the management of the leachate, a liquid waste by-product of decomposition, and the collection of gas for electricity production. This is typically carried out at multiple wells ...


    By Wireless Options Inc.

  • Landfill Leachate Sources and Treatment Options

    What is leachate? In a lab, it is any liquid that extracts solids as it passes through matter. In a landfill, it is the water that enters the facility in a number of ways, passes through waste material on contact, contains a wide range of constituents, and must be addressed with a proper operations plan. Leachate treatment options and mitigation are one of the greatest costs for landfill ...


    By Agru America, Inc.

  • Spray-applied gas vapor barrier solution for housing development on former landfill site case study

    Project: Fraternity Meadows - Building D Location: Secaucus, NJ Products: Liquid Boot 500 Gas Vapor Mitigation System GeoVent™ Gas Venting System Background: The Fraternity Meadows development is a specialized community project situated on a former landfill with detectable levels of methane gas in the soil. This ...


    By CETCO

  • Case study - Tohoku tsunami clean-up uses portable gas analyser for CO detection

    Application Carbon monoxide detection in waste mounds Equipment GA2000 now supersdeded by the GA5000 portable landfill gas analyser Location Tohoku, Japan ...


    By Geotech

  • Application of gas chromatography-mass spectrometry preceded by solvent extraction to determine volatile fatty acids in wastewater of municipal, animal farm and landfill origin

    This study describes extraction of selected volatile fatty acids (VFAs) (containing from 2 up to 8 carbon atoms) with methyl-tert-butyl ether (MTBE) from polluted aqueous samples followed by separation, identification and quantification by gas chromatography coupled with mass spectrometry (GC-MS). Extraction parameters such as time and number of extractions, volume ratio, effect of acidification ...


    By IWA Publishing

  • Effects of landfill leachate treatment on hepatopancreas of Armadillidium vulgare (Crustacea, Isopoda)

    The major environmental impact to the landfill is emission of pollutants via the leachate and gas pathway.The hepatopancreas of the terrestrial isopod Armadillidium vulgare (Isopoda, Crustacea, Latreille 1804) takes an important role in bioaccumulation of contaminants, such as heavy metals. To evaluate the effects of landfill leachate treatment, two different approaches are here applied: 1) ...


    By John Wiley & Sons, Ltd.

  • Use of biocatalysts to reduce hydrogen sulfide emissions from lagoons and landfills

    Emission of odors from ponds and lagoons occurs due to aerobic and anaerobic decomposition of organic solids to release hydrogen sulfide, ammonia, and other organic by-products.  Aerobic biodegradation occurs near the water-air interface, where diffusion of oxygen occurs, while anaerobic degradation prevails mainly near the bottom of the pond or lagoon, where there is low or no dissolved oxygen ...


    By PRD Tech, Inc.

  • Use of Land over Closed Municipal Solid Waste Landfill

     §330.951. Definitions. Unless otherwise noted, all terms contained in this section are defined by their plain meaning. This section contains definitions that are applicable only to this subchapter and which supersede definitions in §330.2 of this title (relating to Definitions) where those terms appear in this subchapter. As used in this subchapter, words in the singular include the plural ...


  • Air Monitoring Information to Aid in the Assessment of Potential Human Health Risk from an Ongoing Landfill Fire

     Abstract The North Carolina Division of Air Quality (DAQ) was asked by the Occupational and Environmental Epidemiology Section (OEES) of the North Carolina Department of Health and Human Services to provide air monitoring information to aid in the assessment of potential human health risk from an ongoing landfill fire in Dare County. The Air Toxics Analytical Support Team (ATAST) arrived ...


  • Do People in Properties near Landfills need to be Concerned about Health & Safety Issues Related to Odors?

    Many residential communities and businesses have been built over the years close to landfills as towns and cities have grown. For people working or living near a landfill, one telltale sign of a landfill’s presence is often unpleasant odors. Landfill gases are formed when buried waste decomposes due to microorganisms or volatizes as the waste changes from a liquid or solid to a ...


    By EMSL Analytical, Inc.

  • Greenhouse gas emissions and reduction studies using a portable TDL gas monitor

    Boreal Laser's GasFinder is a portable open path gas monitor based on laser technology. GasFinder is uniquely suitable for studies of greenhouse gas emissions. It is specific to the gas of interest, provides one second response and has a broad dynamic range. GasFinder is permanently calibrated and is very small and light (less than 5kg). Alignment is easy and stable. No on-site electronic tuning ...


    By Boreal Laser Inc.

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