The second draft of the international handbook on dispersion modelling is now available and open for comments. There are now 45 days to submit comments. Your comments are welcome if you are an expert in odour management or dispersion modelling. The due date to submit comments is 9 July 2023. The final version of the handbook is expected to be ready by September 2023.

   More than 50 experts worldwide signed up for this initiative in 2020. Currently, around 20 volunteers are actively involved in developing this document. Monthly meetings were held online on the last Thursday of each month at alternative times separated by 12 hours to have a more equitable distribution of time slots for volunteers from different time zones.

   During 2018, Chile began to generate quality standards for offensive odors. The priority of the authority was defined by type of activity and the historical number of complaints per year raised by citizens for every type of industry. From the analysis, five industries were selected for the first stage, among which the Chilean Kraft pulp industry was part of, activity representing approximately 2% of world production.

   Facing complaints, the lack of development planning and land use, the absence of quality standards the null international and bibliographic experience of how to proceed with odor management in this type of industry contributed to creating the necessary need to generate online, integrated, prompt response tools that could allow the odor impact to be managed efficiently in real time.

   Since this month November 2022, GRAL dispersion model presents a new website: The Graz Lagrangian Model - GRAL - was initially developed in 1999 at the Institute of Thermodynamics and Sustainable Propulsion Systems at Graz University of Technology.

   In addition, new features and bugfixes have been implemented in the new GRAL Version 22.09, which is now available on the GRAL homepage.

All the content here under Creative Commons license