TRS Monitoring in the Pulp Industry Bengt Löfstedt CEM 2024-03-13 View Count 1432 “The smell of money” is something you may hear close to a pulp production facility, but to be honest, the odour is not pleasant. Continue reading to learn more about the processes generating the fumes, and how to monitor them and emissions from pulp production in general! Read More »
Trending Emissions Monitoring Bengt Löfstedt General, AQM, CEM 2024-01-02 View Count 2153 For the past year, OPSIS has received many orders for equipment for the monitoring of the concentrations of total mercury and dioxins in emissions to air, primarily from waste-to-energy facilities. What brought this along? Read More »
Air Pollution Part 4 – Reduction Methods Bengt Löfstedt General, AQM, CEM 2023-12-07 View Count 1648 Air pollution is undesirable but there are ways to fight it. We wrap up the series of articles about air pollution by taking a look at what to do about it. Read More »
Air Pollution Part 3 – Sources of Particulates Bengt Löfstedt General, AQM, CEM 2023-11-30 View Count 1851 In this article, we take a closer look at how particulate matter is generated, with emphasis on the smallest fractions which also are the ones with the worst health effects. Read More »
Air Pollution Part 2 – Sources of Gaseous Substances Bengt Löfstedt General, AQM, CEM 2023-11-23 View Count 1879 We continue the series of articles on air pollution by taking a closer look at where gas-phase air pollution comes from. Read More »
Air Pollution Part 1 – What’s in the Air? Bengt Löfstedt General, AQM, CEM 2023-11-16 View Count 1729 What is air pollution, where does it come from, and what can we do about it? This article is a first in a short series addressing these topics. Read More »
Emissions Monitoring through Long-term Sampling Bengt Löfstedt CEM 2023-08-04 View Count 2928 Monitoring of flue gas emissions is often a matter of continuous measurements. However, there is also periodic monitoring which can be divided into sampling during a short period of time, and long-term sampling which may approach continuous monitoring. Read More »
Gas Concentration Units and Unit Conversions Bengt Löfstedt General, AQM, CEM 2023-05-11 View Count 2773 On the most fundamental level, the signal from the sensor of a gas analyser gives the number of gas molecules, usually along an optical light beam or in a certain sampling volume. However, a concentration should not be expressed in number of molecules – the number would be far too big. Instead, it is scaled to a unit of weight-per-cubic-metre or volumetric share. How is the scaling done? Read More »
Continuous Emissions Monitoring – What, Why, and How? Bengt Löfstedt CEM 2023-05-05 View Count 1974 Combustion-based heat and power production has historically been an environmental culprit. However, increased awareness and legislative requirements have improved the situation notably over the past decades. But which rules apply, which emissions-to-air limits are there, and how are the emissions determined? Read More »
Uncertainties in Measurements Bengt Löfstedt General, AQM, CEM 2023-04-20 View Count 2133 With all efforts made on precision instrumentation, quality assurance, calibrations, parallel measurements, and adjustments, the measurement results produced by a gas monitor should be spot on, right? Well, not quite… Read More »