Robert Hausler

École de Technologie Supérieure, Génie de la construction, Faculty Member

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Marc Champagne

Kwantlen Polytechnic University

Mark Hammonds

The University of Tokyo

Martin Dominik

University of St Andrews

Başak Yavçan

University of Liege

Ehsan Houshfar

University of Tehran

Luca Bombelli

University of Mississippi

Dr. Utku Bulut Simsek

Bogazici University

Jannatun Nawer

Tufts University

Adalbert Ding

Technische Universität Berlin

Daniel E Wueste

Clemson University

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Papers by Robert Hausler

Service area size assessment for evaluating the spatial scale of solid waste recovery chains: A territorial perspective

Waste management (New York, N.Y.), Jan 25, 2017

Waste recovery is an integrated part of municipal solid waste management systems but its strategi... more Waste recovery is an integrated part of municipal solid waste management systems but its strategic planning is still challenging. In particular, the service area size of facilities is a sensitive issue since its calculation depends on various factors related to treatment technologies (output products) and territorial features (sources waste production and location). This work presents a systemic approach for the estimation of a chain's service area size, based on a balance between costs and recovery profits. The model assigns a recovery performance value to each source, which can be positive, neutral or negative. If it is positive, the source should be included in the facility's service area. Applied to the case of Montreal for food waste recovery by anaerobic digestion, the approach showed that at most 23 out of the 30 districts should be included in the service area, depending on the indicator, which represents around 127,000 t of waste recovered/year. Due to the systemic ...

A spatial analysis of hierarchical waste transport structures under growing demand

Waste management & research : the journal of the International Solid Wastes and Public Cleansing Association, ISWA, Jan 20, 2016

The design of waste management systems rarely accounts for the spatio-temporal evolution of the d... more The design of waste management systems rarely accounts for the spatio-temporal evolution of the demand. However, recent studies suggest that this evolution affects the planning of waste management activities like the choice and location of treatment facilities. As a result, the transport structure could also be affected by these changes. The objective of this paper is to study the influence of the spatio-temporal evolution of the demand on the strategic planning of a waste transport structure. More particularly this study aims at evaluating the effect of varying spatial parameters on the economic performance of hierarchical structures (with one transfer station). To this end, three consecutive generations of three different spatial distributions were tested for hierarchical and non-hierarchical transport structures based on costs minimization. Results showed that a hierarchical structure is economically viable for large and clustered spatial distributions. The distance parameter was...

Analyse des techniques de valorisation énergétique des boues d’épuration municipales

Principes de développement d’un parc industriel écologique

Study of Recovering and Separating the Waste Metal Layers Aircraft by Electrochemical Treatment

International Journal of Environmental Science and Development, 2016

Fractal Spatial Analysis, a complementary tool to LCA in Industrial Ecology and Circular economy planning: The Montreal Case Study

ABSTRACT

$Research paper thumbnail of Analyse fractale des fonctions urbaine: le cas Montréalais$

Analyse fractale des fonctions urbaine: le cas Montréalais

a École de technologie supérieure,département de génie de la construction 1100 rue Notre-Dame Oue... more a École de technologie supérieure,département de génie de la construction 1100 rue Notre-Dame Ouest, Montréal (Qc)-H3C 1K3 b École Polytechnique Fédérale de Lausanne, Communauté d'études pour l'aménagement du territoire (CEAT) Station 16,1015, Lausanne [email protected] Résumé : Les fonctions utilitaires du territoire ont été mesurés par la dimension fractale pour deux quartiers de Montréal. Le quartier Rivière-des-Prairies, un quartier pavillonaire et Villeray-Parc-Extension, un quartier central ont été comparé. Les dimensions fractales calculées sont toutes plus grandes que dans le quartier Villeray-Parc-Extension, à l'exception des fonctions institutionnelles. Le quartier central représente donc un tissu urbain plus diversifié, spécialement dans le cadre du zonage commercial. La dimension fractale permet donc de caractériser quantitativement l'utilisation du territoire de manière efficace. Cela permet d'entrevoir la découverte de propriétés territoriales des villes les plus durables. Mots-clés : dimension fractale, écologie industrielle et territoriale, systèmes complexes, ville durable, fonctions urbaines

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La Gestion Dynamique des déchets (GDD) : élaboration d'une approche intégrée d'aide à la décision visant à soutenir une gestion systémique et évolutive des déchets

En raison des impacts sociaux, économiques et environnementaux associés à la gestion des déchets,... more En raison des impacts sociaux, économiques et environnementaux associés à la gestion des déchets, il est nécessaire de favoriser les prises de décision qui intègrent chacun de ces aspects. Actuellement, les approches préconisées sont plutôt statiques et linéaires dans leur application, elles ne permettent pas une utilisation optimale des matières disponibles. En conséquence, le choix des technologies pour la gestion des déchets repose souvent sur des paramètres fixes, alors que les systèmes sont en constante évolution. De plus, la validité de prioriser une technologie est directement liée aux impacts associés aux longueurs de trajets, aux modes de transports et aux caractéristiques des routes empruntées. Cependant, les outils disponibles négligent cet aspect dynamique qui est crucial pour réduire la charge des systèmes étudiés. Dans le but d'assurer une gestion durable et dynamique des déchets, la GDD propose une nouvelle approche évolutive permettant d'assurer une alimentat...

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Conception des réseaux par biomimétisme : application au transport des déchets

Déchets, sciences et techniques, 2012

General history of stapedectomy

Advances in oto-rhino-laryngology, 2007

The article gives an overview of the historical development of stapedectomy beginning with Kessel... more The article gives an overview of the historical development of stapedectomy beginning with Kessel in 1876. Then, from the beginning to the middle of the 20th century, surgery on the oval window became obsolete, opening the way for an era of fenestration operations until Shea in 1956 performed the first modern stapedectomy using a Teflon stapes replacement prosthesis. Since then, numerous surgeons worldwide have used this procedure with great success. Many of them have contributed towards progressively refining the surgical techniques, e.g. by changing the total removal of the footplate for the less traumatic small fenestra stapedectomy or stapedotomy.

Sustainability Assessment of the Residential Land Use in Seven Boroughs of the Island of Montreal, Canada

Sustainability, 2015

High resource utilization in the residential sector, and the associated environmental impacts, ar... more High resource utilization in the residential sector, and the associated environmental impacts, are central issues in the growth of urban regions. Land-use urban planning is a primary instrument for the proper development of cities; an important point is the consideration of the urban form's influence on resource utilization intensity. Emergy synthesis, an energy-based methodological approach that allows the quantification and integration of both natural and human-generated flows interacting in urban environments, was used to assess sustainability of the residential land use of seven boroughs on the Island of Montreal. Natural resources, food, water, acquired goods and services, electricity and fuels were the main flows considered in the analysis. Results suggest that income, household size and distance to downtown are the variables affecting resource utilization intensity more noticeably and that allocation of green area coverage is an important parameter for

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Training Concept for Environmental Emergency Measures: Structuring Knowledge

Journal of Contingencies and Crisis Management, 1996

During an environmental emergency, intervenors must make rapid decisions to the best of their kno... more During an environmental emergency, intervenors must make rapid decisions to the best of their knowledge regarding the environment and the event itself. To insure optimal decisionmaking, intervenors must acquire the necessary reflexes through numerous and realistic training sessions. It is, therefore, necessary to provide economical training methods. Advances in computer science in the area of data-bases and expert systems allow one to envisage the development of computer tools to further emergency response training.

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Ozone: A Wastewater Disinfectant of the Future

Proceedings of the Water Environment Federation, 2010

ABSTRACT

Removal of pyrene and benzo(a)pyrene from contaminated water by sequential and simultaneous ozonation and biotreatment

Water environment research : a research publication of the Water Environment Federation, 2006

The removal of pyrene and benzo(a)pyrene from contaminated water by sequential and simultaneous o... more The removal of pyrene and benzo(a)pyrene from contaminated water by sequential and simultaneous ozonation-bioremediation techniques was investigated. During the sequential treatment, ozonation using 0.5 or 2.5 mg/L ozone was used as a pretreatment process, whereas, during the simultaneous treatment process, ozonation of hydrocarbon-contaminated water at a predetermined duration using 0.5 mg/L ozone was made in the presence of microbial biomass. Ozonation was not beneficial for the removal of pyrene. However, despite a decreased specific biodegradation rate, ozonation improved the overall elimination of benzo(a)pyrene during both treatment processes. The overall removal of benzo(a)pyrene increased from 23 to 91% after exposure of the water to 0.5 mg/L ozone for 30 minutes during the simultaneous treatment process and further to 100% following exposure to 2.5 mg/L ozone for 60 minutes during the sequential treatment mode, demonstrating the benefits of combined ozonation-biological tre...

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Electrolytic recovery of lead in used lime leachate from municipal waste incinerator

The purification of municipal incinerator gases generates huge quantities of both fly ashes and u... more The purification of municipal incinerator gases generates huge quantities of both fly ashes and used lime, containing high amount of heavy metals (Pb, Cd, Zn and Hg). The used lime is mainly contaminated by Pb and often considered as hazardous waste. This paper is related to a laboratory study on the performance of electrochemical techniques used to recover Pb from leachate produced during used lime decontamination. Two types of electrolytic units (monopolar and bipolar electrode cells) using different electrode materials were studied. Effectiveness was measured in terms of energy consumed, weight of residue sludge produced and reduction in Pb concentration. Results showed that the best performances for Pb removal (in terms of effectiveness and cost) were obtained by initially adjusting the pH of UL leachate to pH 7.5-8.5 with sulphuric acid followed by electrochemical treatment using bipolar electrode (mild steel) system operated at current intensity of 1.5 A through only 5 min. The yield of Pb removal was 98.8 ± 1.3% and an amount of 4.9 ± 1.3 kg trt −1 of metallic sludge was produced. The optimal conditions determined for Pb recovery involved a total cost of CAN$ 1.66 t −1 of dry residue treated, including acid consumption, energy consumption and metallic sludge disposal.

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Franklin-McKnight, K.,----; Carlson, M.; FoWn, P.; Ziesemer, C. Comparison of Ozone Efficiency for Manganese Oxidation Between Raw and Settled Water, 15331 Fulton, GP, see Mastronardi, RA

It and Systemic Approach for Managing Sustainable Urban Infrastructure Rehabilitation

ABSTRACT Urban development sustainability calls for new approaches involving economic, social pol... more ABSTRACT Urban development sustainability calls for new approaches involving economic, social political and environmental dimensions in order to face the institutional complexity of decision-making. That situation imposes increasingly growing constrains and challenges upon administrations in large cities. Therefore the decision to rehabilitate a particular asset in a strongly urbanize area is a complex task witch depends on many parameters. Often lack of relevant information during infrastructures life cycle results in imprecise definition of what has to be done creating unexpected changes and costly impacts. This paper presents a general approach develop base on some work implemented for urban s network rehabilitation. In Verdun by the use of total quality management and knowledge management the project team adopted a systemic approach and developed an integrated management system to manage project information flows, mobilized the internal human resources, managed the dynamics of the process, reduced uncertainties to solved problems. The propose methodology allows manager to control information feedback loops to manage budget, program, conformance, risk and uncertainties. Development of a conceptual framework is described. The model enables managers to use IT and monitoring equipments to handle information, resource, material and people flows in the most efficient manner to generate add value to a rehabilitated asset and to maximize results integrities during planning and execution phases.

Needs-oriented approach for decision support of industrial wastewater management

ABSTRACT Historically, wastewaters are mostly discharged in rivers and more recently in wastewate... more ABSTRACT Historically, wastewaters are mostly discharged in rivers and more recently in wastewater treatment plants. These last few years the paradigm shift toward industrial ecology brought up the necessity of matching natural and anthropogenic cycles and so raised the interest for reuse of wastewater as raw material. Thereby, wastewater, depending on its characteristics, can be discharged to different types of receiving media – natural environment (river), urban wastewater treatment plants (WWTP), internal or external industrial units – after being properly processed. Thereby, the characteristics of the discharged water must meet the regulatory requirements. In Europe, two directives deal with this question. The first one, the Industrial Emission Directive (IED) is based on four principles: the integrative pollution prevention, the use of Best Available Techniques (BAT), flexibility, public participation and information access. The second one, the Water Framework Directive (WFD), gives general objectives for maintaining and restoring the European water bodies’ quality. The application at the industrial level remains variable. In this context, we explored the possibility of considering the wastewater as a product, via a quality approach, linking the two European directives in an industrial ecology strategy. The thought process questions the possibility to transpose the principles and steps of quality management described in the ISO 9000 norm to industrial wastewater management. One key point of the transposition is the evaluation of the \“client’s” needs, which is quite easy when the receiving media is an industrial unit, becomes more difficult when it is a WWTP and even more in the case of a river. Keywords: industrial wastewater, environment, quality, needs.