Research output per year
Research output per year
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Dive into the research topics where Ulphard Thoden van Velzen is active. These topic labels come from the works of this person. Together they form a unique fingerprint.
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Collaborations and top research areas from the last five years
Recent external collaboration on country/territory level. Dive into details by clicking on the dots or
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Circular use of plastics in open field and horticulture
Post, W., Alvarado Chacon, F., van der Zee, M., Thoden van Velzen, U., Van Nguyen, V., Barouta, D., Workala, Y., Kuijpers, B., Zijlstra, M. & Boedijn, A., 2025, Wageningen: Wageningen University & Research. 53 p.Research output: Book/Report › Report › Professional
Open Access -
Efficient Recycling of PET-PE Multilayer Packaging Materials Based on Enzymatic Depolymerization of PET
van Vliet, D. M., Mateman, J. J., van de Vondervoort, R. H. A. M., Moers, A. P. H. A., Collazo, L., Werten, M. W. T., Thiyagarajan, S., Thoden van Velzen, E. U., Tamayo-Ramos, J. A., Julsing, M. K. & Ewing, T. A., 2025, In: ACS Sustainable Chemistry and Engineering. 13, 22, p. 8212-8219Research output: Contribution to journal › Article › Academic › peer-review
Open Access2 Citations (Scopus) -
Modelling volatile organic contaminants in polyolefin packages: Along the value chain from polyolefin packages to recycled plastic
Thoden van Velzen, U. & Smeding, I., Dec 2025, Wageningen: Wageningen Food & Biobased Research. 19 p. (Report / Wageningen Food & Biobased Research; no. 2770)Research output: Book/Report › Report › Professional
Open Access -
Onderzoek naar alternatieve inzamelsystemen: Samenstelling ingezameld kunststofverpakkingsafval bij Droppie
Smeding, I., Workala, Y., Brouwer, M. & Thoden van Velzen, U., 2025, Wageningen: Wageningen Food & Biobased Research. 25 p. (Report / Wageningen Food & Biobased Research; no. 2740)Research output: Book/Report › Report › Professional
Open Access -
Unlocking the biobased future: Investigating recycling lock‑ins and corporate power in the adoption of biobased food packaging
Aramyan, L., Thoden van Velzen, E. U., Herceglic, N., Splinter, G. M. & Susa, A., 2025, In: Environmental Economics and Policy Studies. 27, 3, p. 471-509 39 p.Research output: Contribution to journal › Article › Academic › peer-review
Open Access1 Citation (Scopus)
Datasets
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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, M. (Creator), Picuno, C. (Creator) & Thoden van Velzen, U. (Creator), Wageningen University & Research, 17 Sept 2019
DOI: 10.17632/djj6fmbjzs
Dataset
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Volatile organic compounds in Dutch HDPE milk bottles
Teunissen, W. (Creator), Workala, Y. (Creator), Smeding-Zuurendonk, I. (Creator) & Thoden van Velzen, U. (Creator), Wageningen University & Research, 15 May 2024
DOI: 10.17632/zw6b76yk7x
Dataset
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Separate collection of lightweight packages by 21 individual Dutch households in 2017
Thoden van Velzen, U. (Creator) & Brouwer, M. (Creator), Wageningen University & Research, 15 Apr 2019
DOI: 10.17632/wm4zfwkgzr
Dataset
Activities
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PackSense en WUR brengen met OK-lijst eenvoud in de PPWR
Thoden van Velzen, U. (Speaker) & van Deursen, H. (Speaker)
3 Apr 2025Activity: Talk/presentation/lecture › Oral presentation › Professional
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Bron- of nascheiden?
Thoden van Velzen, U. (Speaker)
4 Mar 2025Activity: Talk/presentation/lecture › Lecture/seminar/webinar › Professional
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Begrijpen we waarvoor we staan?
Thoden van Velzen, U. (Speaker)
26 Mar 2025Activity: Talk/presentation/lecture › Lecture/seminar/webinar › Professional
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Our role in making recycled content available for ourselves
Thoden van Velzen, U. (Speaker)
12 Mar 2025 → 13 Mar 2025Activity: Talk/presentation/lecture › Keynote talk › Professional
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Guiding the transition to a sustainable plastic system: towards a plastic system assessment framework
Brouwer, M. (Speaker), Maaskant-Reilink, E. (Contributor), Post, W. (Contributor), Ballemans, H. (Contributor), Thoden van Velzen, U. (Contributor), Boom, R. (Contributor) & Keurentjes, J. (Contributor)
2 Oct 2025Activity: Talk/presentation/lecture › Oral presentation › Academic
Press/Media
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Honderden miljoenen koffiecapsules mogen vanaf volgend jaar worden gescheiden voor recycling
3/07/25
1 Media contribution
Press/Media: Expert Comment › Popular
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Honderden miljoenen koffiecupjes mogen in 2026 worden gescheiden voor recycling
3/07/25
1 Media contribution
Press/Media: Expert Comment › Popular
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Er zit een luchtje aan statiegeld op zuivelflessen
4/06/25
1 Media contribution
Press/Media: Expert Comment › Professional
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Geen flesjes met shampoo meer in hotels, minder folie om groenten
17/12/24
1 Media contribution
Press/Media: Expert Comment › Popular
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SUR-PLAS-path: co-create sustainable & renewable plastic transition pathways with stakeholders via developing and applying a novel transition design and multi-impact assessment tool
van Lith, Y. (PhD candidate), Strik, D. (Promotor), Chen, W.-S. (Co-promotor), Thoden van Velzen, U. (Co-promotor) & van Leeuwen, J. (Co-promotor)
1/09/22 → …
Project: PhD
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Biologisch afbreekbare verpakkingen: op stap naar toepassing (BO-12.09-002-005)
Thoden van Velzen, U. (Project Leader)
1/01/10 → 31/12/10
Project: LVVN project
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Milieueffecten biologisch afbreekbare verpakkingen (BO-04-006-138)
Thoden van Velzen, U. (Project Leader)
1/01/09 → 31/12/09
Project: LVVN project
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Biologisch Afbreekbare verpakkingen (BO-04-006-020)
Thoden van Velzen, U. (Project Leader)
1/01/08 → 31/12/08
Project: LVVN project