Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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    The impact of collection portfolio expansion on key performance indicators of the Dutch recycling system for Post-Consumer Plastic Packaging Waste, a comparison between 2014 and 2017
    Brouwer, Marieke ; Picuno, Caterina ; Thoden van Velzen, Ulphard - \ 2019
    Wageningen University & Research
    Plastics - Flow Analysis - Recycling - Waste Collection - Packaging
    This dataset corresponds to the paper: “The impact of collection portfolio expansion on key performance indicators of the Dutch recycling system for Post-Consumer Plastic Packaging Waste, a comparison between 2014 and 2017” (2019). The dataset includes two folders, one for the MFA model for 2017 and one for the model results of both the 2014 and 2017 model. Folder 1 (Tables A to I) contains the model description. Tables A, B and C list general input data for the model, such as gross collected amounts and the sorting distribution. Tables D, E, F and G relates to compositional data of separately collected post-consumer plastic packaging waste (PCPPW). In tables D and E the measured average compositions of collected materials and sorted products are listed (input STAN). The output of STAN for collected PCPPW and sorted products made therefrom, are listed in tables F and G. Tables H and I list the compositional data of PCPPW that was mechanically recovered from mixed municipal solid waste (MSW). In table H the measured average compositions of mechanically recovered PCPPW and sorted products made therefrom are listed (input STAN). The output data of STAN for mechanical recovered PCPPW and the sorted products made therefrom are listed in table I. Folder 2 (Tables J to W) shows all modelling results for 2014 and 2017. Table J lists the average gross composition of the separately collected PCPPW. Table K lists the collection fates of all the packaging types. Table L lists the sorting fates of all packaging types for separately collected PCPPW. Table M lists the sorting fates of all packaging types for mechanical recovered PCPPW. Table N lists the End-of-Life fates of all packaging types. Table O lists the average compositions of sorted products and compares those to the DKR sorting specifications to verify general compliance. In order to verify compliance of the sorted products, several interpretations had to be made to translate our list of packaging types in the list of criteria named in the specifications. The ‘benefit of the doubt’ principle was applied when required in this translation process. Table P lists the total amounts of washed milled goods produced. Table Q lists the recovered masses for the mechanical recycling process of the separately collected and sorted PCPPW. Table R lists the recovered masses for the mechanical recycling process of the mechanical recovered and sorted PCPPW. Table S lists the material composition of the produced washed milled goods. Table T and U list the share of desired polymers in the produced washed milled goods made from either separately collected and sorted or mechanical recovered and sorted PCPPW, respectively. Table V and W list the origin of contaminants in the produced washed milled goods made from either separately collected and sorted or mechanical recovered and sorted PCPPW, respectively.
    The impact of collection portfolio expansion on key performance indicators of the Dutch recycling system for Post-Consumer Plastic Packaging Waste, a comparison between 2014 and 2017
    Brouwer, Marieke ; Picuno, Caterina ; Thoden van Velzen, Eggo U. ; Kuchta, Kerstin ; Meester, Steven De; Ragaert, Kim - \ 2019
    Waste Management 100 (2019). - ISSN 0956-053X - p. 112 - 121.
    Collection portfolio expansion - Net recycling yields - Polymeric purity of recycled products - Post-consumer plastic packaging waste - Recycling

    The recycling network of post-consumer plastic packaging waste (PCPPW) was studied for the Netherlands in 2017 with material flow analysis (MFA) and data reconciliation techniques. In comparison to the previous MFA of the PCPPW recycling network in 2014, the predominant change is the expansion of the collection portfolio from only plastic packages to plastic packages, beverage cartons and metal objects. The analysis shows that the amounts of recycled plastics products (as main washed milled goods) increased from 75 to 103 Gg net and the average polymeric purity of the recycled products remained nearly constant. Furthermore, the rise in the amounts of recycled products was accompanied with a rise in the total amount of rejected materials at cross docking facilities and sorting residues at the sorting facilities. This total amount grew from 19 Gg in 2014 to 70 Gg gross in 2017 and is over-proportional to the rise in recycled products. Hence, there is a clear trade-off between the growth in recycled plastics produced and the growth in rejects and residues. Additionally, since the polymeric purity of the recycled plastics did not significantly improve during the last years, most of the recycled plastics from PCPPW are still only suited for open-loop recycling. Although this recycling system for PCPPW is relatively advanced in Europe, it cannot be considered circular, since the net recycling yield is only 26 ± 2% and the average polymeric purity of the recycled plastics is 90 ± 7%.

    Verbeteropties voor de recycling van kunststofverpakkingen : Industriële beleidsopties voor verbetering van de kwaliteit en kwantiteit van het gewassen maalgoed uit de recyclingketen voor huishoudelijke kunststofverpakkingen
    Thoden van Velzen, E.U. ; Brouwer, M.T. ; Picuno, C. - \ 2018
    Wageningen : Wageningen Food & Biobased Research (Wageningen Food & Biobased Research report 1823) - 104
    Computational study of the natural ventilation driven by buyoncy forces.
    Mistriotis, A. ; Picuno, P. ; Bot, G.P.A. ; Scarascia-Mugnozza, G. - \ 1997
    In: Proc. 3td IFAC International Workshop on Mathematical and Control Applications in Agriculture and Horticulture - p. 67 - 72.
    Computational analysis of ventilation in greenhouses at zero- and low-wind speeds.
    Mistriotis, A. ; Arcidiacono, C. ; Picuno, P. ; Bot, G.P.A. ; Scarascia-Mugnozza, G. - \ 1997
    Agricultural and Forest Meteorology 88 (1997). - ISSN 0168-1923 - p. 121 - 135.
    Analysis of the efficiency of greenhouse ventilation using computational fluid dynamics.
    Mistriotis, A. ; Bot, G.P.A. ; Picuno, P. ; Scarassia-Mugnozza, G. - \ 1997
    Agricultural and Forest Meteorology 85 (1997). - ISSN 0168-1923 - p. 217 - 228.
    A systematic analysis of the ventilation process in greenhouses was performed with the use of computational fluid dynamics (CFD). First, the validity of the model assumptions was established by comparing the numerical results with experimental data. A good agreement between the numerical data and the experimental measurements was found if a two-scale k- turbulence model is applied in the CFD simulation. Then, the influence of design characteristics, such as the greenhouse length, on the ventilation was examined in the case of a typical Mediterranean-type greenhouse. It was demonstrated that CFD is a powerful tool for developing improved designs with respect to ventilation efficiency but the results cannot be generalized. Therefore, a systematic investigation of the most common greenhouse types is necessary
    New techniques in ventilation analysis.
    Bot, G.P.A. ; Boulard, T. ; Mistriotis, A. ; Papadakis, G. ; Picuno, P. ; Scarascia-Mugnozza, G. - \ 1996
    In: Paper 96B-037. AgEng96: Int. Conf. on Agricultural engineering, Madrid, Spain - p. 392 - 393.
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