Air Monitoring 11 Monitor Air Quality in Outdoor Areas
An old adage used to say “We are what we eat”. Nowadays however, it might be more important to say “We are what we breath”. With the increasing emissions in the atmosphere of dangerous particles, in urban and extra-urban areas, monitoring the quality of air has become more essential.
When talking about air quality in outdoor areas, the public usually needs to check and keep under control the particulates included in "Thin dust" commonly known as PM10, PM2.5 and PM1, whose sampling is regulated by UNI EN 12341 (PM 10) and UNI EN 14907 (PM2.5), on the European territory, and the US EPA Standard no. 40 cfr. Part 50. Zambelli (Italy) have created the ideal device to be used for this kind of sampling: the Explorer Plus.
Certified T.U.V. and equipped with sampling heads in compliance with all the three regulations, the sequential sampling system Explorer Plus has been devised to combine the lightness and comfort of a three module decomposable structure. This is combined with the reliability and efficiency of a sampler provided with a 6 m³/h rotary pump. The Explorer Plus is an automatic device with two interchangeable loaders (one empty and one with 16 cassette filters) and a supporting “double-jacket” flange to place the sampling heads on.
Other accessories, such as the Peltier cooling system, the conditioner complete with a small roof or the thermoresistance with thermoregulator (all listed on zambelli's website), make the Explorer Plus, fit for the most disparate places.
Reader Reply Card No.
Concentration Monitoring of Ethylene for the Perfect Banana
The smartMODUL-FLOW from smartGAS Mikrosensorik GmbH (Germany) is now available for the detection of ethylene (C2H4). The new gas sensor can detect ethylene with concentrations up to 2.4 Vol.-%.
Ethylene is a plant hormone playing an important role in the ripening process of fruit like apple, banana, or tomato. This effect was already known in ancient times, where ripe and unripe fruits were stored together. The ripe fruits emit ethylene and stimulate the ripening process of the unripe fruits. Today bananas are harvested green in South America and Asia and are shipped to Europe in cooling containers or on cooling ships, where the ripening process is stopped. After arriving in Europe the bananas finish the ripening in special storages, where gassing with an ethylene concentration between 100 and 1,000 ppm takes place. For optimisation of the ripening process the concentration of ethylene has to be monitored very carefully. The new smartMODUL-FLOW has a detection range of 0 to 2,000 ppm and is therefore the ideal sensor for this sensible application.
The sensor utilises infrared (NDIR) absorption and has various advantages compared with other types of sensors. By using highly selective IR absorption technology and integrated optical gas filters cross sensitivities with other gases are reduced to an absolute minimum. Due to the dual-beam-technique the sensor shows practically no ageing or long term drift. The sensor is available with many standard interfaces like Modbus ASCII with RS485, UART or 4…20 mA enabling an easy integration into existing control architectures.
Reader Reply Card No. Gas Sampling and Conditioning Components Exhibiting at AQE 2013
The 7th Air Quality and Emissions Show AQE 2013 will take place in Telford, England, from 13th to 14th March 2013. The organisers of the event have announced that in response to demand from the environmental monitoring community, the format of the next event will be considerably expanded. The new format will encompass the previous topics of the Mcerts events and will focus on industrial emissions and stack monitoring of processes regulated by the Environment Agency, but it will now also address the emissions to air of processes which are controlled by local authorities, in addition to several new aspects of air quality protection.
The congress and workshop program of AQE 2013 is again scheduled for diverse, up-to-date and top-class lectures and workshops reflecting the whole variety of technologies in process industries.
JCT Analysentechnik GmbH (Austria), a high quality specialist manufacturer of gas sampling and conditioning components, will show their latest products and developments as well as a range of portable equipment for mobile applications designed for stack testers and test laboratories. They will be happy to welcome you on 13th and 14th March 2013 in the Telford International Centre at booth 42.
Reader Reply Card No. Remote Gas Analysis Best Available Techniques for Emissions Monitoring
Firms in the UK’s waste sector are proactively seeking Best Available Techniques for emissions monitoring, according to Enviro Technology (UK).
Over recent months there has been a surge in demand for sophisticated equipment, such as monitors of total gaseous mercury. The air quality and emissions monitoring specialist believes that a combination of factors, such as the recast Industrial Emissions Directive (IED) and new national standards surrounding stack emissions in the US, are driving the trend.
Anthropogenic mercury emissions – typically associated with coal or lignite-fired combustion plants - are widely recognised as a serious pollutant. Mercury has been linked to brain and nervous system defects, and its vapour can stay in the atmosphere for up to a year before combining with soil and entering the food chain.
Enviro Technology supplies an MCERTS-certified Opsis DOAS Continuous Emissions Monitoring System (CEMS) that recently received TUV approval for measuring total gaseous mercury. The equipment involves a non-contact method of measurement, using an optical path.
Specific controllers and analysers are installed to perform a continuous emission monitoring (CEM) of chimney emissions, to detect the release of dangerous gases, or to analyse ambient air quality. Gas analysis data from different locations can be wirelessly transmitted to a central location, eliminating the need for installing cables. The DX80 MultiHop Data Radio from Banner Engineering (Belgium) connected to the controller’s communication port transmits all the information to a master radio in a centrally located control room.
Reader Reply Card No. 38
This innovative solution overcomes problems traditionally associated with measurement of mercury emissions. Extractive CEMS struggle to provide accurate total gaseous mercury measurements due to issues surrounding chemical reactions and contamination in the sampling system.
Enviro Technology believes that industry leaders are starting to consider the lifetime value of emissions monitoring equipment, and seeking to future-proof their investment as much as possible. For instance, they are opting for equipment that is capable of lower levels of detection than is currently required by law, so that they have room to manoeuvre if things change. Factors such as the new emissions standards set by the US Environmental Protection Agency and the IED’s shift towards Best Available Techniques are playing a role in the decision making process.
Jim Budd, UK CEMS Sales Manager for Enviro Technology, says: “Emissions limits are becoming ever tighter, and the waste sector understands that it is sensible to invest in the best equipment available. Naturally this makes sense from an environmental perspective, but it is also more economically sound when you consider the lifetime value of equipment. A cheaper system might seem more cost-effective upfront, but any savings are quickly lost if the equipment has higher running costs or a shorter replacement cycle.”
The Opsis DOAS Total Gaseous Mercury system is a non-contact monitoring solution that measures mercury vapour using an optical path. In addition to total
gaseous mercury, it can measure all gases listed in the Industrial Emissions Directive, including: NOx, SO2, CO, CO2, NH3, HF and HCl. Its cost of ownership is lower than extractive systems, due to reduced maintenance and calibration requirements, easy operation and low energy consumption.
Reader Reply Card No. 142
www.envirotech-online.com IET November / December 2012 37 36 35
Page 1 |
Page 2 |
Page 3 |
Page 4 |
Page 5 |
Page 6 |
Page 7 |
Page 8 |
Page 9 |
Page 10 |
Page 11 |
Page 12 |
Page 13 |
Page 14 |
Page 15 |
Page 16 |
Page 17 |
Page 18 |
Page 19 |
Page 20 |
Page 21 |
Page 22 |
Page 23 |
Page 24 |
Page 25 |
Page 26 |
Page 27 |
Page 28 |
Page 29 |
Page 30 |
Page 31 |
Page 32 |
Page 33 |
Page 34 |
Page 35 |
Page 36 |
Page 37 |
Page 38 |
Page 39 |
Page 40 |
Page 41 |
Page 42 |
Page 43 |
Page 44 |
Page 45 |
Page 46 |
Page 47 |
Page 48 |
Page 49 |
Page 50 |
Page 51 |
Page 52 |
Page 53 |
Page 54 |
Page 55 |
Page 56 |
Page 57 |
Page 58 |
Page 59 |
Page 60
