Documents disponibles écrits par cet auteur

Dynamic modelling of E-waste recycling system performance based on product design / Antoinette Van Schaik in Minerals engineering, Vol. 23 N° 3 (Fevrier 2010) 

Public ISBD [article]  in Minerals engineering > Vol. 23 N° 3 (Fevrier 2010) . - pp. 192–210 Titre : Dynamic modelling of E-waste recycling system performance based on product design Type de document : texte imprimé Auteurs : Antoinette Van Schaik, Auteur ; Markus A. Reuter, Auteur Année de publication : 2011 Article en page(s) : pp. 192–210 Note générale : Génie Minier Langues : Anglais (eng) Mots-clés : Design  Liberation  modelling  Dynamic  modelling  System  modelling  Recycling  (Recyclate)  quality  E-waste Résumé : E-waste covers a wide range of products as well as dismantled and/or sorted components originating from these. Being able to predict the flow of materials and recycling performance for different E-waste types requires a fundamental and flexible basis in which E-waste design properties are linked to liberation and separation performance of recycling. This paper discusses the authors’ design-determined liberation and dynamic models to predict and monitor E-waste recycling technologically, economically and environmentally. The uniqueness of this work lies in the modelling of product design characteristics in terms of design tables that define the mass and material connections derived from the design in real-time. The shredding process is modelled by defining shredder connection, and shredder liberation tables, based on heuristic derived from extensive data collection on design and shredder experiments. This allows for the design-driven modelling of material liberation in the shredding process. The heuristic modelling of liberation behaviour and the prediction of particle composition and degree of liberation after shredding based on design-driven shredder modelling are a novel approach to link design to recyclate quality and recycling performance. Key to this work is that the multi- and mono-material composition of particles after liberation are not pre-defined as in earlier work, but are predicted as a function of design choices and can vary accordingly. The evolution of these models is underpinned by extensive industrial data collection on product design of various WEEE categories, which was used to define and calibrate the models. The time dependent characteristic of design and recycling technology requires the adoption of dynamic modelling to predict recycling performance over time. The discussed dynamic and predictive framework provides a first principles basis for the calculation of the dispersion of harmful/valuable elements and environmental impact. This optimizes the spending of money on large scale trials and monitoring test to establish these results. At the same time legislation and policy on recyclability of products can be tested if it stands the test of time or if new designs comply with environmental legislation in the future. Prediction of recycling performance, recyclate quality and toxicity as a function of product design, shredding and (future) recycling system configurations will be demonstrated in various industrial examples, which includes an evaluation if shredding is advisable or not for precious and platinum group elements recovery during recycling. Also the so important balance between energy recovery and feedstock recycling is shown. DEWEY : 622 ISSN : 0892-6875 En ligne : http://www.sciencedirect.com/science/article/pii/S0892687509002295 [article] Dynamic modelling of E-waste recycling system performance based on product design [texte imprimé] / Antoinette Van Schaik, Auteur ; Markus A. Reuter, Auteur . - 2011 . - pp. 192–210. Génie Minier Langues : Anglais (eng) in Minerals engineering > Vol. 23 N° 3 (Fevrier 2010) . - pp. 192–210 Mots-clés : Design  Liberation  modelling  Dynamic  modelling  System  modelling  Recycling  (Recyclate)  quality  E-waste Résumé : E-waste covers a wide range of products as well as dismantled and/or sorted components originating from these. Being able to predict the flow of materials and recycling performance for different E-waste types requires a fundamental and flexible basis in which E-waste design properties are linked to liberation and separation performance of recycling. This paper discusses the authors’ design-determined liberation and dynamic models to predict and monitor E-waste recycling technologically, economically and environmentally. The uniqueness of this work lies in the modelling of product design characteristics in terms of design tables that define the mass and material connections derived from the design in real-time. The shredding process is modelled by defining shredder connection, and shredder liberation tables, based on heuristic derived from extensive data collection on design and shredder experiments. This allows for the design-driven modelling of material liberation in the shredding process. The heuristic modelling of liberation behaviour and the prediction of particle composition and degree of liberation after shredding based on design-driven shredder modelling are a novel approach to link design to recyclate quality and recycling performance. Key to this work is that the multi- and mono-material composition of particles after liberation are not pre-defined as in earlier work, but are predicted as a function of design choices and can vary accordingly. The evolution of these models is underpinned by extensive industrial data collection on product design of various WEEE categories, which was used to define and calibrate the models. The time dependent characteristic of design and recycling technology requires the adoption of dynamic modelling to predict recycling performance over time. The discussed dynamic and predictive framework provides a first principles basis for the calculation of the dispersion of harmful/valuable elements and environmental impact. This optimizes the spending of money on large scale trials and monitoring test to establish these results. At the same time legislation and policy on recyclability of products can be tested if it stands the test of time or if new designs comply with environmental legislation in the future. Prediction of recycling performance, recyclate quality and toxicity as a function of product design, shredding and (future) recycling system configurations will be demonstrated in various industrial examples, which includes an evaluation if shredding is advisable or not for precious and platinum group elements recovery during recycling. Also the so important balance between energy recovery and feedstock recycling is shown. DEWEY : 622 ISSN : 0892-6875 En ligne : http://www.sciencedirect.com/science/article/pii/S0892687509002295

Management of the Web of Water and Web of Materials / Antoinette Van Schaik in Minerals engineering, Vol. 23 N° 3 (Fevrier 2010) 

Public ISBD [article]  in Minerals engineering > Vol. 23 N° 3 (Fevrier 2010) . - pp. 157–174 Titre : Management of the Web of Water and Web of Materials Type de document : texte imprimé Auteurs : Antoinette Van Schaik, Auteur ; Markus A. Reuter, Auteur ; Hein Van Stokkom, Auteur Année de publication : 2011 Article en page(s) : pp. 157–174 Note générale : Génie Minier Langues : Anglais (eng) Mots-clés : System  optimization  Sustainability  Waste  water  and  material  management  End-of-pipe  technology  Policy  Recycling Résumé : The European Water Framework Directive (EWFD) demands a detailed analysis to determine which changes and measures within the surface water system are required, which actors require detailed scrutiny, and which technology has to be developed in order to guarantee that the quality of the surface water is complying with this Directive. This paper will discuss a holistic model developed for the optimization of the surface water system for a water authority in The Netherlands, which is influenced by (i) waste water streams originating from e.g. households, industry, agricultural and transport activities among others and (ii) the end-of-pipe technology of waste water treatment plants, while interfacing with (iii) thermal treatment and minerals and metallurgical processing for the recovery of specific elements from waste water sludge and other residues created during waste water treatment. The paper develops a fundamental basis that can feed factual information such as optimal combination of measures (technology and policy) into sustainability frameworks or the implementation of the EWFD. This optimization is affected by quality constraints, costs, energy, environment and interactions between the various materials present in the different streams in the water system. By incorporating these parameters into the model a tool is provided that provides metrics to measure the ‘sustainability’ of the Web of Water (WoW), while linking to and harmonising with the Web of Materials/Metals (WoM). The WoW optimization model links material cycles from e.g. food, transport, agriculture and industry to the recovery of materials from the water cycle with the pyrometallurgical and thermal processing of minerals/materials, hence quantifying resource conservation and sustainability on the interface between aquatic and product manufacturing systems and the process industries. DEWEY : 622 ISSN : 0892-6875 En ligne : http://www.sciencedirect.com/science/article/pii/S0892687509002258 [article] Management of the Web of Water and Web of Materials [texte imprimé] / Antoinette Van Schaik, Auteur ; Markus A. Reuter, Auteur ; Hein Van Stokkom, Auteur . - 2011 . - pp. 157–174. Génie Minier Langues : Anglais (eng) in Minerals engineering > Vol. 23 N° 3 (Fevrier 2010) . - pp. 157–174 Mots-clés : System  optimization  Sustainability  Waste  water  and  material  management  End-of-pipe  technology  Policy  Recycling Résumé : The European Water Framework Directive (EWFD) demands a detailed analysis to determine which changes and measures within the surface water system are required, which actors require detailed scrutiny, and which technology has to be developed in order to guarantee that the quality of the surface water is complying with this Directive. This paper will discuss a holistic model developed for the optimization of the surface water system for a water authority in The Netherlands, which is influenced by (i) waste water streams originating from e.g. households, industry, agricultural and transport activities among others and (ii) the end-of-pipe technology of waste water treatment plants, while interfacing with (iii) thermal treatment and minerals and metallurgical processing for the recovery of specific elements from waste water sludge and other residues created during waste water treatment. The paper develops a fundamental basis that can feed factual information such as optimal combination of measures (technology and policy) into sustainability frameworks or the implementation of the EWFD. This optimization is affected by quality constraints, costs, energy, environment and interactions between the various materials present in the different streams in the water system. By incorporating these parameters into the model a tool is provided that provides metrics to measure the ‘sustainability’ of the Web of Water (WoW), while linking to and harmonising with the Web of Materials/Metals (WoM). The WoW optimization model links material cycles from e.g. food, transport, agriculture and industry to the recovery of materials from the water cycle with the pyrometallurgical and thermal processing of minerals/materials, hence quantifying resource conservation and sustainability on the interface between aquatic and product manufacturing systems and the process industries. DEWEY : 622 ISSN : 0892-6875 En ligne : http://www.sciencedirect.com/science/article/pii/S0892687509002258