site emissions Articles
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Chemical Company - Environmental
One of the world’s top chemical producers, with major operations in the Houston area, needed to deploy a real-time environmental management application to meet local, state and federal regulatory requirements for NOx and HRVOC, and take advantage of the new emissions trading programs. It sought a solution that would leverage its existing IT infrastructure and support a multi-site emissions ...
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Croydon Selects EMSOL to Reduce Construction Site Emissions - Case study
London feels like it is constantly being rebuilt; nowhere is that more evident than in Croydon which has 11 multi-million pound developments in process during any given month. The resulting pollution and congestion that these sites cause is a serious concern to local communities and the traveling public. Croydon Council has been at the forefront of investments to manage environmental impact. ...
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Advanced sensor technology delivering safety and consistency
Safety and consistency delivered by advanced sensor technology Semiconductors have changed the way we live and continue to play a key role in our future. As the number of production facilities increase, so the potential for harmful emissions also rises. Sensor technology supports the semiconductor industry by enabling consistency and uniformity, while at the same time protecting those working ...
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Sustainable development and adjustment of low carbon industrial investment in dual heritage areas using SD–FREVM: a case study in China
This paper targets the adjustment of industrial investment for low carbon development area through integrating system dynamics and a fuzzy random expected value model. Following that, Leshan, one of the World Natural and Cultural Heritage areas in Western China, is selected as a case to reach the aim of reducing carbon intensity. After the simulation results are analysed, it is concluded that by ...
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Influence of land-sea breezes on nocturnal ozone maxima observed in urban sites
Sometimes nocturnal ozone maxima have been observed, contrasting with the nocturnal minimum values of typical daily profile. The influence of land-sea breeze on the nocturnal ozone maxima was analysed in two urban sites strongly influenced by traffic emissions. Results showed that the increase in nocturnal ozone concentration, as well as its maxima was caused by horizontal advection of ozone, ...
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Infrared differential absorption Lidar (DIAL) measurements of hydrocarbon emissions
We report the application of an infrared (IR) differential absorption Lidar (DIAL) system (also capable of ultra violet measurements) built at the National Physical Laboratory (NPL), UK, to field measurements of total site emissions (controlled and fugitive) from petrochemical and landfill installations. The validation of the IR-DIAL was carried out via a series of controlled field experiments ...
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Watershed-based sources of polycyclic aromatic hydrocarbons in urban storm water
Untitled Document Abstract—Polycyclic aromatic hydrocarbons (PAHs) are carcinogenic and mutagenic compounds, ubiquitous in the air and water of urban environments, and have been shown to accumulate in coastal estuarine and marine sediments. Although previous studies have documented concentrations and loads of PAHs in urban runoff, little is known about the sources and ...
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Federal PSD/Title V Stationary Source Permitting Exclusion of Nonroad Engines
The PSD and Title V programs derive their applicability based on the aggregate air emissions from on-site equipment at each facility. Many railyards operate small combustion equipment such as gasoline-powered welders, compressors, and generators. These units may qualify as nonroad engines. Air emissions from nonroad engines need not be included in a facility’s aggregate air emissions when ...
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Particulate emission monitoring in the Mineral industry - Case Study
Application The grinding of China Clay can be processed by ring roller mills providing efficient control of product size. With the addition of a new mill on a China Clay production site, particulate emission monitoring from the baghouse to the atmosphere was required to meet regulatory requirements. With an ELV of 10 mg/m3 and an MCERTS certified product installation specified by the regulator, ...
By ENVEA
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`Federal PSD/Title V Stationary Source Permitting Exclusion of Nonroad Engines,` presented at the 2004 Railroad Environmental Conference
Abstract The PSD and Title V programs derive their applicability based on the aggregate air emissions from on-site equipment at each facility. Many railyards operate small combustion equipment such as gasoline-powered welders, compressors, and generators. These units may qualify as nonroad engines. Air emissions from nonroad engines need not be included in a facility's aggregate air emissions ...
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Dispersion from elevated sources above obstacle arrays: modelling requirements
A series of wind-tunnel experiments is used to investigate the requirements of "practical" models for the prediction of the behaviour of stack emissions from an industrial site (i.e. a group of buildings), in particular for the determination of ground-level concentration or exposure downwind from the site. The study addresses Gaussian plume modelling and, assuming that an adequate model ...
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Case study - Nor848A Acoustic Camera Metro station in Taipei, Taiwan
After the construction of the elevated sky train, too high noise levels were appearing under the line and local communities were complaining. Therefore acoustic absorbing panels were mounted under the metro line at critical sites in order to reduce noise emission. To document the effect of the absorbers a Norsonic Nor848A 1.0 meter acoustic camera was setup for recording and reporting on the ...
By Norsonic AS
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Project - Michigan Chemical Plant - Chemical Processing
CMC Solutions, LLC. was retained by a chemical plant in the Michigan to install and evaluate a Predictive Emission Monitoring System (PEMS) under 40 CFR Part 75, Subpart E as an alternate monitoring system under Title IV of the Clean Air Act. The PEMS software (SmartCEMS with Data eLements) was installed onsite for predictive models for continuous monitoring on two units. One of these boiler ...
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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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Separate determination of PM10 emission factors of road traffic for tailpipe emissions and emissions from abrasion and resuspension processes
Little is known about the relevance of mechanically produced particles of road traffic from abrasion and resuspension processes in relation to the exhaust pipe particles. In this paper, emission factors of PM10 and PM1 for light and heavy-duty vehicles were derived for different representative traffic regimes from concentration differences of particles and nitrogen oxides (NOx) in ambient air ...
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Data Requirements Air Emissions/Off-Gases
Predictive modeling may be usefelected to represent the system (e.g., SVE treatment, incinerator, etc.), and site and contaminant informaul in estimating emissions from a site or treatment system. An appropriate theoretical model is stion is used to estimate gross emissions. Because many variables affect emission rates, this approach is limited by the representativeness of the model and by the ...
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N2O, CH4 and CO2 emissions from seasonal tropical rainforests and a rubber plantation in Southwest China
Abstract The main focus of this study was to evaluate the effects of soil moisture and temperature on temporal variation of N2O, CO2 and CH4 soil-atmosphere exchange at a primary seasonal tropical rainforest (PF) site in Southwest China and to compare these fluxes with fluxes from a secondary forest (SF) and a rubber plantation (RP) site. Agroforestry systems, such as rubber plantations, are ...
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Project - Michigan Chemical Plant - Chemical Processing
CMC Solutions, LLC. was retained by a chemical plant in the Michigan to install and evaluate a Predictive Emission Monitoring System (PEMS) under 40 CFR Part 75, Subpart E as an alternate monitoring system under Title IV of the Clean Air Act. The PEMS software (SmartCEMS with Data eLements) was installed onsite for predictive models for continuous monitoring on two units. One of these boiler ...
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A simple method to check for natural attenuation downstream of abandoned waste disposal sites
Evaluations of waste sites are based on the assessment of whether conditions for Natural Attenuation (NA) processes are favourable. A method is proposed as a first check for effects of NA in the groundwater emissions. For the application of the method, concentrations of the concerned substance and of a tracer must be available at observation wells at different distances from the source, ...
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Welcome To the Dungeon!
The Qnergy Applications Engineering Team has created a state-of-the-art test lab that allows the validation of any electronic piece of equipment the scientific mind can think of. This lab is affectionately referred to as “The Dungeon”. In The Dungeon, the Qnergy Team has validated the operation of its PowerGen Stirling engine remote power system on some of the most challenging pieces ...
By Qnergy
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