Fixed Gas Monitoring Articles

  • Case study - Beijing Guohuan Tsinghua Environment Engineering Design and Research Institute

    An aerobic digestion project was commissioned on a closed landfill site in Hubei Province.  Aerobic digestion in this particular application is from a biological waste water treatment process; once sediments are removed from waste water, oxygen is used to break down the organic matter.  The site had been covered with an overlay of clean soil to enable the land to be used again ...


    By Geotech

  • Case study - China Resources Gas Group Ltd

    Anaerobic fermentation project with waste water in Qidong Jiangsu Province, China.  The purification project was set up in order to connect the biogas to the city’s gas pipeline. The customer’s challenge Biogas upgrading: the Group aims to make use of what would ordinarily be a by-product – waste water.  Gas is extracted from a water treatment process, ...


    By Geotech

  • The Challenge AER-200 Respirqmeter System for anaerobic applications

    The CHALLENGE AER-200 Respirometer System consists of one or more biological reaction vessels, gas flow measuring cells, and a computer. The gas measuring base contains eight flow cells and associated interconnecting circuitry. As gas flows through each cell under the influence of a slight pressure caused by gas production in the reaction vessel, bubbles of a fixed volume are formed in the lower ...


    By Challenge Technology

  • GA3000 monitors graves in Korea case study

    Application Research into gases produced by animal carcasses Equipment GA3000 Location Korea Customer A Korean government research facility supplied and supported by ENInstrument. ...


    By Geotech

  • Trends and projections in the EU ETS in 2015

    The European Union (EU) Emission Trading System (ETS) covers about 45% of the EU's total greenhouse gas (GHG) emissions. GHG emissions from the installations included in the ETS decreased by 24% between 2005 and 2014. The emission level reached in 2014 was the lowest since 2005, when the system was launched. It was also lower than the 21% reduction target for the year 2020. Between 2013 and 2014, ...

  • A Four Channel Gas Detector for Wastewater Treatment Plants

    Common hazardous gases found in wastewater treatment plant facilities are hydrogen sulphide, methane, ammonia, carbon monoxide, chlorine and oxygen deficiency. Some facilities may also use ozone, chlorine dioxide or sodium hypochlorite with the chlorine during the sanitization treatment process. Furthermore, sulphur dioxide is often used to de-chlorinate the water once the treatment process is ...

  • The importance of maintaining your fixed gas analyser

    Plant technicians rigorously check for contaminates within the digester and ensure that the performance is optimised but maintaining the gas analyser monitoring the whole process is often overlooked.  Many analysers are used in harsh and potentially explosive environments and so it is of paramount importance that the operation runs smoothly and safely. With simple maintenance of your ...


    By Geotech

  • Fixed Versus Portable Gas Detection – Which Is Better?

    Did you know that workers are needlessly injured every year as a result of leaking toxic or combustible substances? Such incidents are known to involve a wide range of hazardous gases (including ammonia, carbon monoxide, chlorine, hydrogen sulfide, hydrocarbon vapors and so on). The sad reality is that most of these accidents are avoidable if only the workplace is adequately monitored. This leads ...

  • Are fuel cells the future for stationary power?

    Fuel cells are one solution for generating stationary power for industry and grid balancing, but they are currently not competitive with conventional generation. Marc Height has a look at the market and at new, lower-cost technology coming to the fore that could change the playing field. Input hydrogen and oxygen into a very particular box and, like magic, electricity is produced, alongside heat ...


    By Energy Institute (EI)

  • Simulation and optimization of airlift external circulation membrane bioreactor using computational fluid dynamics

    The airlift external circulation membrane bioreactor (AEC-MBR) is a new MBR consisting of a separated aeration tank and membrane tank with circulating pipes fixed between the two tanks. The circulating pipe is called a H circulating pipe (HCP) because of its shape. With the complex configuration, it was difficult but necessary to master the AEC-MBR's hydraulic characteristics. In this ...


    By IWA Publishing

  • Comparing TGA, FTIR and fixed filter infrared analyzers for measuring soot levels in in-service lubricants

    Measuring soot in diesel engine oil has become more important as soot levels get higher due to exhaust gas recirculation. As soot isone of the key indicators for the condition of the oil, diesel engine maintenance programs performing regular soot checks can realize cost savings by extending drain periods and reducing used oil disposal. TGA (Thermal Gravimetric Analysis) is the traditional method ...


    By Spectro Scientific

  • UE: risk of shortage for 8 rare earth metals

    In a report published on November 4th, the European Joint Research Centre (JRC) has warned of the "risk of shortage" in 2020-2030 of eight strategic metals used in low carbon energy technologies identified in the European SET Plan adopted in 2008. This report continues the work done in a previous study of the JRC from 2011. It is also based on the scenarios presented in 2011 in the roadmap of ...


    By Stanford Magnets

  • Understanding the Benefits of Fixed Gas Detection

    "Fixed gas detection is an essential method of ensuring maximum protection for personnel and plant. There are a variety of technologies available for a multitude of applications. Understanding fixed gas detection is the first step in providing safety." What is fixed gas detection? Fixed gas detection is installed with the aim of providing continuous, area and personnel protection. ...


    By a1-cbiss

  • Measuring methane at the UK`s first viable compact anaerobic digester plant

    At the UK's first viable compact anaerobic digester (AD) plant aimed at local food waste treatment, a Geotech GA3000 fixed biogas analyser monitors methane (CH4), carbon dioxide (CO2), oxygen (O2) and hydrogen sulphide (H2S). The plant, a modular scalable AD system, unveiled by React Environmental in July 2012 at Llangadog, Carmarthenshire, can handle some 1,000 ...


    By Geotech

  • What Features Do You Need In Your Mobile Or Modular Laboratory?

    Today’s need for laboratories crosses many industries in a variety of ways.  This is driven by numerous factors, but most notably by regulatory compliance requirements and the need to increase the efficiency of operations.  Whether the need is for a mining operation’s compliance covering storm water quality or an oil/gas company running geochemical operations on well fluids ...


    By GF Environmental Labs

  • Power generation at a stationary engine application

    South Texas, USA Max Gross Power Output: 28kWe Thermal Heat Input: 235 - 450kWt Hot Water Input Range: 180 - 190°F Hot Water Flow: 200 GPM Direct Condenser: Ambient air temperature ranges from 30-100°F avg is 70°F ElectraTherm’s Gulf Coast distributor, Gulf Coast Green Energy (GCGE), is generating fuel-free, emission free power using the ElectraTherm ...


    By ElectraTherm

  • Viral Analyses

    Outbreaks of foodbome and waterborne illness have been associated with viruses'*" . The viruses that are typically transmitted by water (via the fecal-oral route) belong to one of the largest groups of viruses called the enteric viruses. At least 140 human enteric virus types are known, including 72 serotypes of enteroviruses, adenoviruses, reoviruses, rotaviruses, norwalk virus, and others*. ...


    By Analytical Services, Inc

  • LAGFLUM, a stationary 3D Lagrangian stochastic numerical micromixing model for concentration fluctuations: validation in canopy turbulence, on the MUST wind tunnel experiment

    A stationary three–dimensional Lagrangian stochastic numerical model, LAGrangian FLUctuation Model (LAGFLUM), was developed by coupling a macromixing with a micromixing scheme, to determine the mean and the variance of concentration for a passive scalar in 3D turbulent flows. The model was tested by comparison with the (MUST) Mock Urban Setting Test wind tunnel experiment, where the dispersion of ...


    By Inderscience Publishers

  • What is a Breathing or Respiratory Zone?

    In the past, vehicle exhaust gas detectors have been installed on or near the ceiling. In contrary, Critical Environment Technologies Canada Inc. (CETCI) has always recommended that they be installed in the breathing zone. Recently, Quebec’s regulation has reinforced CETCI’s recommendations. It states that “dusts, gases, fumes, vapours and mists found in the workplace ...

  • Fixed price contract versus incentive–based contract in the oil and gas industry

    The research question of this paper is to analyse when an operator and a service provider prefer a fixed price contract, common in the oil and gas industry, versus the uncommon incentive–based contract. The contracts are modelled with 20 parameters and one free choice variable which is the time to complete the project determined by the service provider. The method is to determine the ...


    By Inderscience Publishers

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