AXON Enviro Group Ltd

Athens, Greece

AXON Enviro Group Ltd

Athens, Greece
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Sebos I.,National Technical University of Athens | Progiou A.,AXON Enviro Group Ltd. | Symeonidis P.,DRAXIS Environmental Technologies | Ziomas I.,National Technical University of Athens
Journal of Hazardous Materials | Year: 2010

Land-use planning, as concerns the prevention and limitation of the consequences of possible major accidents from industrial installations, is an essential mechanism for dealing with actual or potential conflicts between sources of risk, such as potentially hazardous industrial developments, and surrounding land-uses. The objective of this paper is to present a decision making methodology that is suitable for assisting urban and spatial planning in the vicinity of hazardous installations and therefore covers the directions of Article 12 of the European Council Directive 96/82/EC (the so-called SEVESO II directive). The proposed methodology was designed to address the particularities of the Greek case, regarding the type and availability of risk and spatial data. It incorporates a broad set of multiple and conflicting criteria that arise in land-use planning decisions, through the application of a well known multi-criteria decision analysis method (ELECTRE TRI). Additionally, it is easy to use (comprised of simple steps) and can be readily incorporated into Geographical Information System based platforms. © 2010 Elsevier B.V.


Progiou A.,AXON Enviro Group Ltd | Ziomas I.,National Technical University of Athens
Water, Air, and Soil Pollution | Year: 2012

Air pollutants emissions from traffic are very closely connected to urban air quality, in a local scale, as well as to global problems like climate change, in a large scale. Road transport air pollutants emissions represent, in most cases, a critical parameter for a comprehensive and successful understanding of the mechanisms governing the air pollutants concentrations. Hence, reliable estimations and comprehension of road transport emissions are indispensable in order to set reliable strategies in the direction of air pollution abatement and management of air pollutants and greenhouse gases emissions. In this framework, in the present work, the emissions of air pollutants from road transport in Greece will be presented for the whole period 1990-2009 as it was found that a detailed, accurate and reliable emissions inventory was missing. The whole period emissions variation has clarified the impact of the change in the vehicle fleet, the engine technologies and the fuel quality. The calculated results have revealed that the age of the vehicles and the corresponding engine technology are the critical parameters determining the amount of the pollutants emitted. This was mainly observed in both passenger cars and heavy duty vehicles demonstrating the importance of a renewal programme of the old circulating vehicles in order to set an effective air pollution abatement strategy. Passenger cars were found to be responsible for the major part of most air pollutants emissions except from nitrogen oxides and particulates emissions. Heavy duty vehicles contribute more than 66% to nitrogen oxides and particulates emissions. For the whole time period, all calculated pollutants present a decreasing trend, with the exception of carbon dioxide and nitrous oxide which increase constantly, ranging from -96% for sulphur dioxide to -1% for PM10. © Springer Science+Business Media B.V. 2011.


Progiou A.G.,AXON Enviro Group Ltd. | Ziomas I.C.,National Technical University of Athens | Panagiotou N.M.,National Technical University of Athens | Boukouvalas C.J.,National Technical University of Athens
Proceedings - 7th International Congress on Environmental Modelling and Software: Bold Visions for Environmental Modeling, iEMSs 2014 | Year: 2014

Particulate matter concentrations are in most cities a major environmental problem. This is also the case in Greece where, despite the various measures taken in the past, the problem still persists. In this aspect, in the framework of the European Life Programme ACEPTAIR, a cost efficient, comprehensive policy tool was developed in order to help decision makers to take the most appropriate measures towards particulates pollution abatement. In the framework of the project, the tool was applied for the areas of three major Greek cities. The operational platform consists of two modules, a database and an algorithm for the calculation of particulate levels for different emissions scenaria. The database comprises historical measurements data, the corresponding emissions data from all sources as well as source apportionment data. In the second module, the algorithm can be applied in order to forecast particulate levels taking into account various reduction measures or the business as usual scenario. The tool can be used for future or past conditions giving thus the possibility to the decision makers to evaluate ex ante or ex post the effectiveness of specific abatement measures. Moreover, the ex post evaluation is useful for testing and validation reasons. Finally, the tool is user friendly and it can be easily updated when new input data are available.


Progiou A.G.,AXON Enviro Group Ltd. | Ziomas I.C.,National Technical University of Athens
Science of the Total Environment | Year: 2015

Particulate matter concentrations are in most cities a major environmental problem. This is also the case in Greece where, despite the various measures taken in the past, the problem still persists. In this aspect, a cost efficient, comprehensive method was developed in order to help decision makers to take the most appropriate measures towards particulates pollution abatement. The method is based on the source apportionment estimation from the application of 3D meteorological and dispersion modeling and is validated with the use of 10years (2002-2012) PM10 monitoring data, in Athens, Greece, as well as using PM10 emission data for the same area and time period. It appears that the methodology can be used for estimating yearly average PM10 concentrations in a quite realistic manner, giving thus the decision makers the possibility to evaluate ex ante the effectiveness of specific abatement measures. © 2015 Elsevier B.V..


PubMed | AXON Enviro Group Ltd
Type: | Journal: The Science of the total environment | Year: 2011

During the last decades, the Greater Athens Area (GAA), among many other urban agglomerations, faces atmospheric pollution problems mainly associated with high levels of particulates, nitrogen dioxide and ozone. The major pollution source for the GAA is road transportation. In this sense, the aim of this work was to investigate the existence of a direct relationship linking air pollutant concentration levels and road traffic emissions. To this aim, air pollutant emissions from road traffic were calculated for the period 1990-2009 and then the relationship with the corresponding air pollutant concentrations was investigated. The calculated results have revealed that all pollutants examined show a strong decreasing trend whereas the age of the vehicles and the corresponding engine technology determine the amount of the pollutants emitted. In addition, the NO(2)/NO(x) emission ratio presents a constant increase in the course of the years, according to the respective NO(2)/NO(x) concentration ratio. Furthermore, the comparison between emission calculations and the corresponding measured concentrations shows a highly significant correlation providing therefore evidence to policy makers that all pollution abatement measures can be defined and assessed with regard to their anticipated effect on air pollutant emissions. Detailed analysis of the 2009 emissions shows that, in general, passenger cars are the major polluters for CO, NMVOCs and CH(4), whereas PM(10) and NO(x) are mostly associated with heavy duty vehicles (HDVs). Finally, it appears that vehicles aged more than 15 years are responsible for the major part of the air pollutants emitted.


Progiou A.G.,AXON Enviro Group Ltd. | Ziomas I.C.,National Technical University of Athens
Science of the Total Environment | Year: 2011

During the last decades, the Greater Athens Area (GAA), among many other urban agglomerations, faces atmospheric pollution problems mainly associated with high levels of particulates, nitrogen dioxide and ozone. The major pollution source for the GAA is road transportation. In this sense, the aim of this work was to investigate the existence of a direct relationship linking air pollutant concentration levels and road traffic emissions. To this aim, air pollutant emissions from road traffic were calculated for the period 1990-2009 and then the relationship with the corresponding air pollutant concentrations was investigated. The calculated results have revealed that all pollutants examined show a strong decreasing trend whereas the age of the vehicles and the corresponding engine technology determine the amount of the pollutants emitted. In addition, the NO 2/NO x emission ratio presents a constant increase in the course of the years, according to the respective NO 2/NO x concentration ratio. Furthermore, the comparison between emission calculations and the corresponding measured concentrations shows a highly significant correlation providing therefore evidence to policy makers that all pollution abatement measures can be defined and assessed with regard to their anticipated effect on air pollutant emissions. Detailed analysis of the 2009 emissions shows that, in general, passenger cars are the major polluters for CO, NMVOCs and CH 4, whereas PM 10 and NO x are mostly associated with heavy duty vehicles (HDVs). Finally, it appears that vehicles aged more than 15years are responsible for the major part of the air pollutants emitted. © 2011 Elsevier B.V.


PubMed | National Technical University of Athens and AXON Enviro Group Ltd.
Type: | Journal: The Science of the total environment | Year: 2015

Particulate matter concentrations are in most cities a major environmental problem. This is also the case in Greece where, despite the various measures taken in the past, the problem still persists. In this aspect, a cost efficient, comprehensive method was developed in order to help decision makers to take the most appropriate measures towards particulates pollution abatement. The method is based on the source apportionment estimation from the application of 3D meteorological and dispersion modeling and is validated with the use of 10 years (2002-2012) PM10 monitoring data, in Athens, Greece, as well as using PM10 emission data for the same area and time period. It appears that the methodology can be used for estimating yearly average PM10 concentrations in a quite realistic manner, giving thus the decision makers the possibility to evaluate ex ante the effectiveness of specific abatement measures.

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