References of "Nicolas, Jacques"
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See detailLes nuisances olfactives à habay
Nicolas, Jacques ULg; Romain, Anne-Claude ULg

Conference given outside the academic context (2007)

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See detailTroisième campagne de mesure des odeurs sur le CET "Cour-au-Bois" à Braine le Château - Estimation des nuisances olfactives
Nicolas, Jacques ULg; Delva, Julien; Denne, Pierre et al

Report (2007)

The study is conducted in the frame of a programme of monitoring of all landfill sites in Wallonia. The "odour" part is assigned to ULg. The present report concerns more particularly a third campaign on ... [more ▼]

The study is conducted in the frame of a programme of monitoring of all landfill sites in Wallonia. The "odour" part is assigned to ULg. The present report concerns more particularly a third campaign on the site of "Cour-au-Bois" at Braine-le-Château. Besides the usual field inspection technique, the research group has used the results of a survey conducted in the surrounding population together with an analysis of the diary provided by a resident. [less ▲]

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See detailStudy of VOC and odour emissions during the convective drying of urban residual sludges
Léonard, Angélique ULg; Martin, Georges; Nicolas, Jacques ULg et al

Conference (2007, October)

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See detailCampagne de mesure des odeurs sur le CET de Malvoisin - Estimation des nuisances olfactives.
Nicolas, Jacques ULg; Denne, P.; Romain, Anne-Claude ULg et al

Report (2007)

The study is conducted in the frame of a programme of monitoring of all landfill sites in Wallonia. The "odour" part is assigned to ULg. The present report concerns more particularly a campaign on the ... [more ▼]

The study is conducted in the frame of a programme of monitoring of all landfill sites in Wallonia. The "odour" part is assigned to ULg. The present report concerns more particularly a campaign on the site of Malvoisin. Besides the usual field inspection technique, the research group has used GC-MS to estimate the chemical composition of the atmosphere over the tipping area, dynamic olfactometry and flux emission chamber to assess the odour flux generated by the waste material and a survey in the surrounding population. [less ▲]

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See detailMonitoring an odour in the environment with an electronic nose : requirements for the signal processing
Romain, Anne-Claude ULg; Delva, Julien ULg; Nicolas, Jacques ULg

Conference (2007, January)

Artificial olfaction system (the so-called electronic nose) is a very promising tool to monitor the malodour in the field. Usual measurement techniques of odour use human olfaction or conventional ... [more ▼]

Artificial olfaction system (the so-called electronic nose) is a very promising tool to monitor the malodour in the field. Usual measurement techniques of odour use human olfaction or conventional analytical techniques. The first category represents the real odour perception but is not applicable to measure continuously bad odours in the field. The second class of techniques gives the mixture composition but not the global information representative of the odour perception. The e-nose has the potentialities to combine "the odour perception" and the "monitoring in the field". However to be able to reach that goal, the signal processing has to be adapted to work in complex environment. The research group in Arlon has more than ten years experience in the measure of environmental malodours in the field. The paper presents the minimal requirements that the group considers as essential for artificial olfaction system to become successful for this application. [less ▲]

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See detailDifferent approaches to measure environmental odours emitted by landfill areas
Romain, Anne-Claude ULg; Delva, Julien ULg; Nicolas, Jacques ULg

Conference (2007)

This paper presents different methods to assess the odour emission and the odour annoyance in the surroundings. It is shown, on the example of landfill areas and composting facilities, that chemical ... [more ▼]

This paper presents different methods to assess the odour emission and the odour annoyance in the surroundings. It is shown, on the example of landfill areas and composting facilities, that chemical analyses are helpful to identify key compounds of the odour release, and to set up the specification of a monitoring instrument. Sensitive methods, like dynamic olfactometry or sniffing team investigation, are mainly applicable to provide a global odour plume or an average annoyance zone. And the electronic nose can supply a warning signal to the plant manager or a real time estimation of the annoyance zone. [less ▲]

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See detailApplying the electronic nose in the environment
Nicolas, Jacques ULg; Delva, Julien ULg; Romain, Anne-Claude ULg

Poster (2007)

The communication presents the various requirements imposed to electronic nose to become an instrument of environmental monitoring. Obstacles of the monitoring of real life environmental odours may be ... [more ▼]

The communication presents the various requirements imposed to electronic nose to become an instrument of environmental monitoring. Obstacles of the monitoring of real life environmental odours may be classified into three categories: • the final goal of the study, requiring to measure a global odour annoyance and not any gaseous emission, • the analysed sample itself, which is highly variable, due to the process evolution and to the influence of ambient parameters; • and the operating conditions, needing to work far from any building and sometimes at locations not easy to reach. The paper suggests some simple solutions to those problems. [less ▲]

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See detailHorizontal Evaluation Method for the Implementation of the Construction Products Directive (HEMICPD)
Lor, Marc; Vause, Kevin; Dinne, Karla et al

Poster (2007)

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See detailElectronic nose : a promising tool for landfill odour monitoring
Nicolas, Jacques ULg; Romain, Anne-Claude ULg; Delva, Julien ULg

in Lehmann, Ernest C. (Ed.) Landfill research focus (2007)

The paper briefly presents the advantages and drawbacks of the use of electronic noses to monitor continuously the odours generated by a landfill area. It stresses more particularly on the remaining ... [more ▼]

The paper briefly presents the advantages and drawbacks of the use of electronic noses to monitor continuously the odours generated by a landfill area. It stresses more particularly on the remaining obstacles to surmount before using the technique on a routine level. [less ▲]

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See detailMonitoring of PCDDs and PCDFs of waste incinerators in Wallonia : uncertainty evaluation.
Bergmans, B.; Idczak, F.; Maetz, P. et al

in Organohalogen Compounds (2007), 69

Since the end of 2000, a continuous sampling to monitor PCDDs and PCDFs emission was implemented on the 11 municipal waste incineration ovens in Walloon Region, to check the compliance with the EU ... [more ▼]

Since the end of 2000, a continuous sampling to monitor PCDDs and PCDFs emission was implemented on the 11 municipal waste incineration ovens in Walloon Region, to check the compliance with the EU emission limit value, 0.1 TEQ ng/Nm³. For this purpose, uncertainty estimation is one of the most crucial points for decision making. The sampling and analytical uncertainty was estimated by two different ways: 1. Identification and quantification of the major contributions through QA/QC data (type A evaluation) or by other sources (type B evaluation), 2. Direct assessment through specific duplicate measurements. Both ways were found to give results in good agreement, with an extended uncertainty of about 30 to 40%, depending on the congener, with a coverage factor k=2. [less ▲]

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See detailControlling factors of gully erosion in the upper part of the Isser river watershed (Algiers, N. Algeria)
Daoudi, M.; Dewitte, Olivier ULg; Gérard, Paul et al

in Geophysical Research Abstracts (2007), 9

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See detailFormules de calcul de distances à respecter entre bâtiments d'élevage et habitations pour que l'odeur soit acceptable. Comparaisons et proposition, puis validation d'une formule pour la Wallonie (Belgique)
Nicolas, Jacques ULg; Cobut, Pierre; Otte, Benoît et al

in Actes des septièmes journées de la recherche avicole (2007)

Le Gouvernement de la Région wallonne (Belgique) a confié à l'unité de recherche la tâche d'inventorier les différentes directives relatives au calcul de la distance à respecter entre les bâtiments d ... [more ▼]

Le Gouvernement de la Région wallonne (Belgique) a confié à l'unité de recherche la tâche d'inventorier les différentes directives relatives au calcul de la distance à respecter entre les bâtiments d'élevage (dont les élevages de volailles) et les habitations pour assurer un niveau d'acceptabilité de l'odeur générée. Huit formules de calcul, appliquées dans différents pays, ont été examinées et comparées et une étude de sensibilité des différents paramètres a été menée. Cette première comparaison a donné lieu à une appréciation des différentes méthodologies, selon des critères de pertinence par rapport à la réalité de terrain, de faisabilité technique, d'applicabilité à la Région wallonne et de cohérence avec les théories de la génération et de la dispersion des odeurs. Sur base de ces différents éléments, une formule originale a été proposée : elle permet de calculer une distance d'acceptabilité de la nuisance olfactive sur base de facteurs multiplicatifs incluant les éléments suivants : nombre et type d'animaux, facteurs techniques de l'étable (type, stockage et manipulation de la litière, ventilation, nourriture), environnement orographique et météorologique et type de voisinage. Les différents paramètres de cette formule ont été ajustés grâce à des visites de terrain, puis la formule a été validée sur 22 poulaillers et élevages de canards. La compatibilité a été testée avec les unités d'odeur, les débits d'odeur et les percentiles spatio-temporels utilisés pour apprécier les zones de nuisances olfactives. [less ▲]

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See detailSeconde campagne de mesure des odeurs sur le CET de Hallembaye Estimation des nuisances olfactives – Etude de l'influence du relief sur la propagation des odeurs.
Nicolas, Jacques ULg; Denne; Hanson, Alain ULg

Report (2006)

The study is conducted in the frame of a programme of monitoring of all landfill sites in Wallonia. The "odour" part is assigned to ULg. The present report concerns more particularly a second campaign on ... [more ▼]

The study is conducted in the frame of a programme of monitoring of all landfill sites in Wallonia. The "odour" part is assigned to ULg. The present report concerns more particularly a second campaign on the site of Hallembaye. The research group applied the usual field inspection technique to assess the global odour emission rate generated by the site. The influence of relief is particularly discussed with the results of 3D modelling. [less ▲]

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See detailEtude de faisabilité d'une méthodologie d'évaluation des nuisances olfactives, basée sur un arbre de décision. Jacques
Nicolas, Jacques ULg; Cobut, Pierre; Romain, Anne-Claude ULg et al

Report (2006)

La Région wallonne ne dispose actuellement d’aucune réglementation spécifique aux nuisances olfactives, ni en ce qui concerne les propositions de mesures d’odeurs, ni en matière de valeurs limite à ... [more ▼]

La Région wallonne ne dispose actuellement d’aucune réglementation spécifique aux nuisances olfactives, ni en ce qui concerne les propositions de mesures d’odeurs, ni en matière de valeurs limite à respecter. L’application d’une réglementation ou la préparation de textes nouveaux, se traduit par la nécessité de disposer de méthodes et de moyens de mesures adéquats : ceux-ci sont décrits dans les normes, qu’elles soient allemandes (VDI), françaises (AFNOR), européennes (CEN) ou internationales (ISO). L’objectif principal de cette étude est de tester et d’améliorer la procédure de décision en matière de nuisances olfactives, devant permettre de baliser l’instruction des dossiers d’octroi de permis en fonction de critères propres à l’installation et à son environnement. L’outil qui servira à remplir cet objectif est un arbre de décision dichotomique. Les objectifs secondaires qui en ont découlé sont :  une première « carte d’identité odeur » par secteur d’activité ;  des recommandations en matière d’interprétation des données de mesure dans un objectif de réglementation. Ce rapport débute avec un état de l’art en matière de législation, dans lequel nous abordons la tendance actuelle et la critique des législations nationales ainsi qu’un résumé de la législation de la Région flamande. Le chapitre trois présente les différentes techniques de mesures de l’odeur. Les méthodes peuvent être soit sensorielles, soit physico-chimiques ou soit électroniques. On retrouve par exemple dans les premières : le facteur d’émission, l’olfactométrie dynamique au seuil de perception, le traçage d’odeur sur le terrain, l’évaluation des percentiles, la grille de mesure, le journal tenu par les riverains et l’intensimétrie. L’évaluation systématique de la qualité des méthodes de mesure en termes de précision ou de reproductibilité ne sont pas reprises dans ce rapport, en effet celle -ci peut être trouvée dans la littérature. La méthodologie suivie pour arriver à répondre à l’objectif principal se base sur les trois points suivants : une trentaine de visites d’exploitations industrielles, une discussion avec divers spécialistes et une revue de la bibliographie. Cette méthodologie nous a permis de créer une démarche scindée en une première partie de récolte de données, suivie d’une seconde partie analytique. Dans cette dernière, nous présentons tout d’abord les outils qui permettent d’évaluer l’impact olfactif sur la population et ensuite l’arbre de décision qui a pour fonction de déterminer la méthode de mesure la plus appropriée. [less ▲]

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See detailApplying the electronic nose in the environment : requirements for the instrument
Nicolas, Jacques ULg; Romain, Anne-Claude ULg; Delva, Julien

Conference (2006, June 01)

Applying the electronic nose to monitor environmental odours is not straightforward. The instrument must be adapted to the final objectives. It has to pass different steps : suitable sensor selection ... [more ▼]

Applying the electronic nose to monitor environmental odours is not straightforward. The instrument must be adapted to the final objectives. It has to pass different steps : suitable sensor selection, right choice of the target when supervised methods are used for data processing, choosing an odour-related dependant variable when using regressions, coping with the variability of environmental odour, taking the sensor drift into account, working only in concentrations above the limit of detection of the sensors, working with a mobile instrument in the field and coping with the ambient parameters. [less ▲]

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See detailContribution à l'état de l'environnement wallon - Partie : pollutions intérieures
Nicolas, Jacques ULg

Report (2006)

The document is a draft version for a contribution to the Walloon environmental state. It concerns the indoor air pollution. It inventory the possibles pollutants, their sources, their health risks, the ... [more ▼]

The document is a draft version for a contribution to the Walloon environmental state. It concerns the indoor air pollution. It inventory the possibles pollutants, their sources, their health risks, the methods to measure them and their actual guideline values. [less ▲]

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See detailEtat de l'Environnement Wallon – Chapitre "Odeur"
Nicolas, Jacques ULg

Report (2006)

The report constitutes a part of the Walloon Environmental status. It refers to environmental odours. It inventories the potential odour sources in Wallonia and presents the available data concerning ... [more ▼]

The report constitutes a part of the Walloon Environmental status. It refers to environmental odours. It inventories the potential odour sources in Wallonia and presents the available data concerning complaints and responses of the society to cope with the odour problems. [less ▲]

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See detailSeconde campagne de mesure des odeurs sur le CET de Happe- Chapois Estimation des nuisances olfactives
Nicolas, Jacques ULg; Denne, Pierre; Cobut, Pierre

Report (2006)

The study is conducted in the frame of a programme of monitoring of all landfill sites in Wallonia. The "odour" part is assigned to ULg. The present report concerns more particularly a second campaign on ... [more ▼]

The study is conducted in the frame of a programme of monitoring of all landfill sites in Wallonia. The "odour" part is assigned to ULg. The present report concerns more particularly a second campaign on the site of Happe-Chapois. Besides the usual field inspection technique, the research group has used dynamic olfactometry to estimate the odour flux emitted by the tipping area, through a sample collected by a dynamic flux chamber. The report presents also a critical discussion about the advantages and limits of the field inspection technique. [less ▲]

Detailed reference viewed: 12 (0 ULg)