Passive Sampling Articles
-
Fenceline Monitoring of Benzene in Refineries Using OMNI-2100 - Case Study
Background: According to the Environmental Protection Agency (EPA)1, undetected leaks (aka fugitive emissions) are a significant source of pollution and can emanate from industry, refineries, energy production, and natural gas pipelines. Fixing these leaks can protect workers and nearby communities, reduce operating costs for companies, and assist regulators with implementing source emissions ...
-
Aeration’s Importance in Wastewater Treatment
Microbes are the backbone of an aerobic wastewater treatment system, and they need oxygen to work efficiently Biological wastewater treatment is an economical alternative to chemical and mechanical wastewater treatments. It makes use of bacteria and other organisms to decompose organic waste present in wastewater. The microorganisms feed on the organic material to obtain the nutrients they need ...
-
The US EPA acquires CEREX analyzers for Benzene Testing
Industrial facilities, energy production, and refining operations can be significant sources of gas-phase air pollutants. Some industrial emissions originate from fugitive sources (leaks) or process malfunctions and can be mitigated if identified. In recent amendments to the National Emission Standards for Hazardous Air Pollutants from Petroleum Refineries, the U.S Environmental Protection Agency ...
-
A Guide for Effective Selection of Air Quality Monitors
The selection of air quality monitors plays an elemental role in preparing preventive and protective action plans on regional as well as global scales. In 2019, Hindustan Times kindled a discussion on the rising number of non-attainment cities across the country. That is to say, a non-attainment city fails to comply with the Central Pollution Control Board (CPCB) standards. This noncompliance is ...
-
City of London Corporation, Waste Transfer Station - Case study
Air Pollution Challenges in the Urban Supply Chain The City of London Corporation has consistently delivered innovative initiatives to improve air quality and Walbrook Wharf was one of their key initiatives. Walbrook Wharf is a large waste transfer site right on the Thames, just east of Southwark Bridge. At this site, waste from all over the authority is collected and shipped down the Thames by ...
-
The Snap Sampler is the subject of ESTCP ER-0630, a demonstration/validation of the Snap Sampler technology
The Army Corps ESTCP study is the most extensive 3rd-Party evaluation of the Snap Sampler method completed to date. There are 5 complete reports and several presentations included here for free download. A Fact Sheet explaining results in a short synopsis is included ...
-
Passive vs Active Sampling for Sensor-based Ambient Air Quality Monitoring
Air pollution with its cascading effects across the population has become a serious matter of concern. To address this air pollution problem, availability of accurate and reliable air quality data is crucial. The quality of air monitoring depends upon how the sample of air is collected and how it is analysed. This paper majorly focuses on passive vs active sampling for air quality monitoring. ...
-
Using Chemcatcher to help solve a pesticide puzzle - Case Study
The acid herbicide MCPA (4‐chloro‐2‐methylphenoxy acetic acid) is a relatively common pesticide used in agriculture and horticulture to control broadleaved weeds and rush. It has been detected in surface water, groundwater and drinking water worldwide. In fact, it is one of the most frequently encountered herbicides in water quality monitoring the US, Canada, Australia and much ...
-
Ceramic Tube Diffuser EKR - Dirnau (Landshut) Purification Plant - Case Study
In 2019, ENVICON has won the tender for a retrofit of the ceramic tube diffusers in the Dirnau (Landshut) purification plant. As well as providing the diffusers, ENVICON also carried out the project coordination, removal, installation and commissioning as well as the disposal of the old diffusers. The existing plastic-bonded ceramic tubes were replaced. Due to the design of our diffusers, some ...
By ENVICON GmbH
-
Membrane Tube Diffuser EMR - Pfutzthal Purification Plant - Case Study
In 2007/2008, the Pfützthal purification plant was expanded from 25,000 PE to 36,800 PE. The aeration system to be implemented during the conversion of the biological purification stage was to be as efficient as possible. Originally planning to use disc diffusers of size 2000 x 1000 mm, our customer then opted for the especially efficient EMR 1000 AeroTop tube diffusers since ENVICON ...
By ENVICON GmbH
-
Assessing urban air quality using `non-conventional` methods
I started my PhD journey in 2016 at the Manchester Metropolitan University, under supervision by Dr Leon J. Clarke, Dr Konstantinos Tzoulas and Dr Gina Cavan. After developing a ‘passion’ for lichens during my undergraduate studies, I was able to work with these fascinating organisms again and further develop and improve skills in the field of geochemistry. This short blog provides ...
-
Benzene Monitoring: Comparing Real-Time to Method 325
Executive Summary EPA’s Refinery Sector Rule, issued in 2015, includes monitoring air concentrations of benzene along the perimeter/fenceline of U.S. refineries. EPA Method 325 A & B requires refineries to continuously monitor benzene using passive sampling tubes over 14-day intervals. Method 325A details field protocols for the deployment and collection of passive sampling tubes, while ...
-
Robust, High Efficiency Aeration System with intelligent Control system at one of the Largest WWTP`s in the World
INTERNATIONAL SUCCESS This extensive aeration project demanded robust, well-proven, high-efficiency diffusion technologies coupled with intelligent control protocols to accomplish desired results. EDI, with decades of experience and a strong reputation for delivering quality on every project, achieved another successful outcome: 10% greater oxygen transfer efficiency Reduced maintenance ...
-
How Refiners Use Monitoring Tools to Support Community Health and Safety
Nothing is more important than the health and safety of our people and our communities—the communities where our employees live, work and go to school. Fenceline monitoring is used at our facilities to aid in the early detection of emissions, including benzene. The data helps us immediately correct problems and nearly all refining facilities quickly return to below action levels after ...
-
Metaldehyde still on the radar for UK water companies
The UK government’s ban on the sale of metaldehyde-containing slug pellets, introduced this summer, was in place for just a month when it was overturned by a High Court decision on 31 July 2019. This means that the substance will remain on the radar for water companies and environmental groups – for the moment at least. The Defra ban on substance came into force on 30 June, with the ...
-
Takeda Pharma GmbH, Germany - Case Study
“Takeda Pharma GmbH is controlling more than 30000 containers per year. NIR allows to save time without loosing safety.” Customer name Mr. Armin Groh, Laboratory Manager Quality Control Company / Institution Takeda Pharma GmbH, Germany Product lines NIRSolutions™ Industries Pharma & Biotech Customer: Takeda Pharma GmbH, Germany Takeda Pharma GmbH as part of the ...
By BUCHI
-
UF Purification versus Microfiltration, Which Process To Choose For Your Application?
Anyone who has studied at the very least high school level biology (and paid attention) is familiar with the concept of a membrane, in particular a semi-permeable membrane. Biological living cells are wrapped in semi-permeable membranes that keep their functions separate from the surrounding environment. The semi-permeable aspect allows only certain ions and organic molecules to pass into or out ...
-
An Introduction to the Different Types of Air Sampling Techniques
Monitoring air quality is both an essential part of health and safety and for ensuring a pleasant workplace environment. For example, in breweries or dry food storage areas, where carbon dioxide is produced as part of the fermentation process, monitoring gas levels is key for protecting workers’ health.1 Even in office buildings, where chemical processing may not be a risk, monitoring ...
-
10 Things to Look for in Continuous Ambient Air Quality Monitoring System
Cost-effective sensors have started to make their mark when it comes to the air quality monitoring system. Today, there are many types of these low-cost sensors which are available in the market. However, certain aspects should be given importance when it comes to choosing the right solution to your problem. Here are ten things one should keep in mind while selecting a low-cost air quality ...
-
The effect of draw out lens diameter on sensitivity of GC–MS analysis
Gas chromatography–mass spectrometry (GC–MS) allows isolation and identification of individual analytes within a complex mixture. Helium has traditionally been the first-choice carrier gas, owing to its inertness, performance, and relatively cheap price. Since 2001, however, helium has become increasingly expensive with a reported global increase in price of 500% between 2001 and 2016 ...
Need help finding the right suppliers? Try XPRT Sourcing. Let the XPRTs do the work for you