Balfagon   The use of activated carbon has been and still is common practice in deodorization installations, as it is one of the technologies that requires the lowest initial investment, as well as little maintenance. The current situation, in which the price of this raw material is rising steadily, has led to the search for new alternatives for chemical adsorbents that allows to eliminate or minimize the use of activated carbon, while maintaining or even improving its performance.

    This study aims to present alternatives to activated carbon and compare the filtration efficiency, both in capacity and reaction rate, for hydrogen sulfide, as well as their physical characteristics. The carbon footprints of each type of adsorbent being used will also be compared. The use of nearby raw materials, together with chemical engineering for the development of these new products, makes it possible to achieve better chemical adsorbents, less pollutants, more competitive prices and what is also important, more stable prices.


PT EN13725   The company Olfasense has opened the registration for the annual Proficiency Test for Olfactometry based on EN 13725:2003. Laboratories around the world are invited to participate in this edition to confirm compliance to the performance criteria of EN 13725:2003.

   The measurements for the proficiency test will be carried out between August 29th and September 9th, 2022, inclusive. If your lab is interested in participating in this interlaboratory proficiency test, you are encouraged to confirm your participation by May 27th, 2022, at the latest.

42 003   On the 20th of November 2012 the first meeting took place of Working Group 2, tasked by CEN/TC274 “Air Quality” to revise EN 13725:2003 ‘Air Quality - Determination of odour concentration by dynamic olfactometry’.

   After 8 years of work and 17 meetings, the final draft of the revised standard is finally completed and submitted on May 31st 2021 for formal vote in the CEN Technical Committee 264 “Air Quality” in 2021. This paper lists the changes that will affect the practice of olfactometry in Europe, once this standard is published as EN 13725:2021.

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