Imola, Italy
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Dentoni L.,Polytechnic of Milan | Capelli L.,Polytechnic of Milan | Sironi S.,Polytechnic of Milan | Remondini M.,Sacmi Science | And 5 more authors.
Chemical Engineering Transactions | Year: 2012

For odour impact assessment purposes it may be very useful to dispose of an instrument (electronic nose) capable of both qualifying and quantifying odours in ambient air. For this reason, in the last decade, at the Politecnico di Milano, in collaboration with Sacmi s.c. and Progress S.r.l., specific electronic noses for the continuous monitoring of environmental odours were developed. Since the first instrument developed (EOS 835), during the last years an innovative electronic nose was realized (EOS 507) with the aim of guaranteeing better performances on field. This paper reports the results of laboratory tests performed on different pure compounds, selected among compounds that are typical of environmental odour emissions, proving the capability of the new instrument EOS 507 of discriminating odours and to determine their concentrations up to very low odour concentration values (about 30 ouE/m 3). Moreover, the two instruments (EOS 507 and EOS 835) were used on field, in order to verify their performances with real environmental odours. Copyright © 2012, AIDIC Servizi S.r.l.


Eusebio L.,Polytechnic of Milan | Sironi S.,Polytechnic of Milan | Capelli L.,Polytechnic of Milan | Il Grande M.,Progress S.R.L. | Della Torre M.,Sacmi Science
Chemical Engineering Transactions | Year: 2014

The development of an electronic nose for the continuous monitoring of odour emissions from an industrial plant would represent an important advantage in the field of environmental odour emissions control. For instance, it would allow to characterize odour emissions over time and use these data as real time input (data) for dispersion modelling purposes. This study presents the first results of our research for the development of an electronic nose designed specifically for emission monitoring. The electronic nose EOS 507 was developed in collaboration with Sacmi s.c. and Progress S.r.l. The emission chosen to test the electronic nose performances was a chimney for the emissions of the fumes produced by a plant for the disposal and treatment of hospital waste. A preliminary study was conducted in order to evaluate the instrument capability to quantify the odour concentration of pure compounds as well as of mixtures emitted by the monitored plant. An accurate instrument training was carried out in order to account for both the different operation phases of the plant and the variability of the conferred waste. The monitoring in the field involved the periodical collection of samples at the monitored emissions and their analysis by dynamic olfactometry, in order to verify the correctness of the electronic nose estimations. The first results obtained seem to highlight that the electronic nose, if opportunely trained, is capable of estimating the odour concentration of the emission at a satisfying level of accuracy. Copyright © 2014, AIDIC Servizi S.r.l.


Sironi S.,Polytechnic of Milan | Eusebio L.,Polytechnic of Milan | Capelli L.,Polytechnic of Milan | Remondini M.,Sacmi Science | Del Rosso R.,Polytechnic of Milan
Chemical Engineering Transactions | Year: 2014

Indoor air quality is important to occupant health because it affects the health and comfort of occupants. Ventilation is the technique used for regulating indoor air quality. Currently, CO2 is the pollutant that is taken as the reference to calculate the makeup air rate and recirculation air rate of indoor spaces. Indeed, the quality of indoor air is affected by all microclimate components of the environment, concentration of odours and toxic materials, number of aerosols and microbes in the air, contamination by radioactive gases, static electricity etc. Regarding air quality, pleasant or unpleasant odours dominate the perception of the environment by the occupant and, among other pollutants that may be present in indoor environments, odour has been considered as one of the causes of different symptoms of the Sick Building Syndrome. This paper discusses the laboratory and indoor field tests conducted measuring both CO2and odour in order to compare the concentration trends of these two parameters. The indoor air monitoring trial was conducted for a three month period in a university room used by students as a break room. Moreover, the performance of an innovative electronic nose, designed specifically for indoor applications (EOS 101), was evaluated. The tests prove the simplified electronic nose EOS 101 to be effective in the detection of odours in an indoor environment. Copyright © 2014, AIDIC Servizi S.r.l.


Cavazzuti M.,University of Modena and Reggio Emilia | Corticelli M.A.,University of Modena and Reggio Emilia | Nuccio A.,Sacmi Forni SpA | Zauli B.,Sacmi Science
Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science | Year: 2013

Kiln burners for industrial tile production are usually fuelled by methane gas. However, the interest towards the use of coal or synthesis gases is rapidly increasing, mainly due to the opening of important markets in developing countries. The widely variable chemical composition of these fuels demands the gas burner to be adapted on case-by-case basis, since the firing parameters are strictly fixed, to guarantee the required temperature distribution within the kiln. In this context, computational fluid dynamics analysis represents a very convenient alternative to the traditional design based on experiments. In this article three-dimensional numerical predictions are presented for a syngas-fired burner. Three different fuels, two burner layouts and two burner nominal power are considered. Temperature, velocity and oxygen mass fraction distributions are discussed, and general design lines for low lower heating value gas burners are extracted. © IMechE 2013.


Cavazzuti M.,University of Modena and Reggio Emilia | Corticelli M.A.,University of Modena and Reggio Emilia | Masina G.,Sacmi Forni S.p.A. | Saponelli R.,Sacmi Science
Engineering Applications of Computational Fluid Mechanics | Year: 2013

Industrial kilns for ceramic tiles production demand thorough control of the firing parameters to ensure uniform product quality. A given temperature profile must be imposed along the kiln length, while spanwise temperature profile should be as uniform as possible at the tiles level at any location. Due to special needs in emerging markets, interest is growing towards the use of gases produced by gasification processes as an alternative to methane. This requires specific burner design and proper re-calibration of the firing parameters. In the present work, computational fluid dynamics is used to analyse an industrial kiln section for different fuels, nominal burner powers, and burner nozzle diameters. The results are given in terms of temperature and velocity fields in the kiln room, and temperature distributions over the tiles floor. It is shown that a sensible combination of the three parameters investigated can lead to satisfactory results, even with gases having poor heating value.


Dentoni L.,Polytechnic of Milan | Capelli L.,Polytechnic of Milan | Sironi S.,Polytechnic of Milan | Del Rosso R.,Polytechnic of Milan | And 2 more authors.
Sensors (Switzerland) | Year: 2012

Exhaustive odour impact assessment should involve the evaluation of the impact of odours directly on citizens. For this purpose it might be useful to have an instrument capable of continuously monitoring ambient air quality, detecting the presence of odours and also recognizing their provenance. This paper discusses the laboratory and field tests conducted in order to evaluate the performance of a new electronic nose, specifically developed for monitoring environmental odours. The laboratory tests proved the instrument was able to discriminate between the different pure substances being tested, and to estimate the odour concentrations giving correlation indexes (R2) of 0.99 and errors below 15%. Finally, the experimental monitoring tests conducted in the field, allowed us to verify the effectiveness of this electronic nose for the continuous detection of odours in ambient air, proving its stability to variable atmospheric conditions and its capability to detect odour peaks. © 2012 by the authors; licensee MDPI, Basel, Switzerland.

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