Showing results for: methane monitoring Articles
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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 ...
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Error analyses in volumetric method for measuring methane and CO
2adsorption on coalCO2 sequestration in deep coal seams with enhanced coalbed methane recovery (CO2–ECBM) is emerging as a promising option to stabilise CO2 concentration in the atmosphere. Volumetric method for measuring methane and CO2 adsorption on coal can generate the critical information of the coalbed methane recovery and CO2 storage amount of the target coal seams. In this work, the potential sources of ...
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Analysis of methane emissions from digested sludge
The energetic use of sewage sludge is an important step in the generation of electricity and heat within a wastewater treatment plant (WWTP). For a holistic approach, methane emissions derived from anaerobic treatment have to be considered. Measurements show that methane dissolved in digested sludge can be analyzed via the vacuum salting out degassing method. At different WWTPs, dissolved ...
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Anaerobic Biomass Activity Tests
Anaerobic Biomass Activity Tests The methane production activity of anaerobic sludges is related to the history of the sludge, the biomass yield from the wastewater the sludge has been treating, the fraction of methanogens, and the presence of toxic substances. Best performance can be achieved from an anaerobic treatment plant if the operator measures the Specific Methanogenic Production (SMP) ...
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Measurements of Methane Emissions and Surface Methane Oxidation at Landfills: WR1125
Methane emissions from landfill were estimated to account for around 3% of the UK‟s total greenhouse gas emissions in 2009. The reported figure for methane emissions from landfill in the UK represents 41.5% of all UK methane emissions. The IPCC guidelines indicate that measurement of methane emissions is necessary to validate models and to provide confidence in country specific model ...
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Anaerobic BMP and ATA Tests
Anaerobic BMP and ATA Tests Biochemical Methane Potential (BMP) tests involve addition of test chemicals or wastewater samples of concern to an anaerobic culture that is contained within a sealed vessel. Methane or total gas production are measured over periods ranging from 1 to 60 days without addition of new chemical or wastewater sample. Modern BMP tests usually involve multiple additions of ...
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Improving the reliability of closed chamber methodologies for methane emissions measurement in treatment wetlands
Non-homogeneous mixing of methane (NHM) within closed chambers was studied under laboratory conditions. The experimental set-up consisted of a PVC vented chamber of 5.3 litres of effective volume fitted with a power-adjustable 12 V fan. NHM within the chamber was studied according to fan position (top vs lateral), fan airflow strength (23 vs 80 cubic feet per minute) and the mixing time before ...
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Application of CH4 gas sensor
introduction Methane gas is an odorless, colorless, highly flammable gas commonly found in natural gas, biogas, and landfill gas. It is also a potent greenhouse gas that contributes to climate change. Therefore, monitoring and detecting methane gas leaks is critical to prevent potential hazards and environmental damage. The CH4 gas sensor detects and measures the concentration of methane gas in ...
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Sewage sludge treatment: evaluation of the energy potential and methane emissions with COD balancing
Sewage sludge is an important resource for the generation of electricity and heat within a wastewater treatment plant (WWTP). Taking a holistic approach to such use involves considering the greenhouse gas emissions. In particular, for anaerobic sludge treatment, methane emissions are a matter of concern. Therefore, the utilization of a carbon balance, based on the chemical oxygen demand ...
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Cambrian Innovation Inc - Case Study
Cambrian the leading wastewater treatment solution provider in US and they built a plant to help Anchor Brewing, the oldest beer producer in US, to deal with their wastewater and make sure that after their treatment, the wastewater’s NMHC concentration should be within allowable limit. Cambrian use our Nutech 3000 to perform the NMHC testing. The photo shows Cambrian operator Evert Jacobson ...
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Puzzle remains over source of Amazonian methane
Remote sensing observations have shown high methane concentrations in the troposphere above tropical forests in Venezuela and Brazil and scientists claim to have measured significant amounts of methane being emitted aerobically from the leaves of plants during photosynthesis. Recent experiments have been unable to reproduce these controversial results. Detailed knowledge of the global ...
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React Environmental use GA3000 to measure methane - Case Study
The company uses Geotech’s GA3000 (now superseded by GA3000 PLUS) fixed biogas analyser to monitor methane, carbon dioxide, oxygen and hydrogen sulphide. React’s anaerobic digestion plant incorporates a patented separated hydrolysis system that converts organic material into renewable energy. This is an important evolution in the principal biological process which is common to ...
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Update on Federal Air and GHG Regulations Affecting Landfills
EPA’s recent regulatory changes are expected to alter the way landfills are regulated for the foreseeable future with a potential to add additional compliance costs for the industry. The air quality and greenhouse gas (GHG) regulatory framework at the federal level is currently in a state of flux with respect to landfills. The landfill industry awaits the issuance of a revised version ...
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Development of on-line instruments for monitoring of methane and NMTHC at PPB and PPM levels without matrix effects
Monitoring of methane and Non-Methane Total Hydrocarbons (NMTHC) is an important tool for process monitoring. In the microelectronics industry, the silicon substrates (wafers) are stored in containers, named FOUP (Front Opening Unified Pod) made in polymers (PC, PEEK, COP, PEI). Such materials are able to adsorb the Volatile Molecular Contaminants (VMC) and subsequently outgas these ones in ...
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Expert insight: test method basics for oxidizer permit requirements
Whenever a new oxidizer is installed to control Volatile Organic Compound (VOC) emissions, the question often comes up: What test method should I use to demonstrate that the device meets permit requirements? Most states allow you the choice of three EPA Test Methods: 18, 25 and 25A. Of these, use of Method 25A is usually the most desirable, for a few reasons. One, Method 25A provides real time ...
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Comparison of greenhouse gas analyzers -measurements using photoacoustic, laser, FTIR analyzers and gas chromatography
In the last decades, several technologies have been developed to measure greenhouse gas (GHG) concentrations and fluxes. We compared six devices using different measurement technologies: two gas chromatographic systems with a barrier discharge ionization detector (GC-BID) and an electron capture detector (GC-ECD), respectively, a portable GHG analyzer based on laser absorption, a photoacoustic ...
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Cubic Methane Leak Sensing Solution for Oil and Gas Industry Compliance with EU Methane Regulation
On 15 November 2023, the European Union reached the provisional agreement on a new EU Methane Regulation, as part of the proposals to deliver European Green Deal, aimed at reducing methane emissions in the energy sectors of Europe. The oil and gas industry will be subject to the highest monitoring standards, requiring accurate measurement, monitoring, reporting, and verification of methane ...
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Monitoring Methane Emissions from Agriculture and Dairy Farming
Methane (CH4) is the second most prevalent greenhouse gas emitted from human activities. In 2014, CH4 was responsible for around 11 percent of all US greenhouse gas emissions caused by human actions. Methane is emitted by a range of natural sources such as marshlands, leakage from natural gas systems and livestock farming [1]. Domestic livestock such as cattle, sheep and goats, produce ...
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Controlling CO2 Emissions with Agricultural Gas Sensors
Agriculture in the UK is responsible for 9% of total greenhouse gas emissions, with that number rising to 30% of worldwide total emissions.1 There are a variety of sources for such gases in agriculture, including methane production from livestock, carbon dioxide release on soil disturbance, and emissions from farm machinery.2-4The question is how to reduce such emissions. Under the 2008 Climate ...
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New Study Raises Big Questions on U.S. Fugitive Methane Emissions
A new study in the Proceedings of the National Academy of Sciences sheds light on a question that continues to vex industry executives and policymakers alike: How significant are fugitive methane emissions from oil and gas production? The study claims that U.S. methane emissions may be as much as 50 percent higher than estimates in the Environmental Protection Agency’s (EPA) annual ...
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