| Title | Deodorization of post-consumer plastic waste fractions: A comparison of different washing media |
|---|---|
| ID_Doc | 6441 |
| Authors | Roosen, M; Harinck, L; Ugdüuler, S; De Somer, T; Hucks, AG; Belé, TGA; Buettner, A; Ragaert, K; Van Geem, KM; Dumoulin, A; De Meester, S |
| Title | Deodorization of post-consumer plastic waste fractions: A comparison of different washing media |
| Year | 2022 |
| Published | |
| Abstract | An important impediment to the acceptance of recyclates into a broader market is their unwanted odor after reprocessing. Different types of washing procedures are already in place, but fundamental insights into the deodorization efficiencies of different washing media are still relatively scarce. Therefore, in this study, the deodorization efficiencies of different types of plastics after washing with different media were determined via gas chromatography and mass spectrometry analysis. A total of 169 compounds subdivided into various chemical classes, such as alkanes, terpenes, and oxygenated compounds, were detected across all packaging types. Around 60 compounds were detected on plastic bottles, and around 40 were detected on trays and films. Owing to the differences in physicochemical properties of odor compounds, different deodorization efficiencies were obtained with different washing media. Water and caustic soda were significantly more efficient for poly(ethylene terephthalate) bottles with deodorization efficiencies up to 80%, whereas for polyethylene (PE) and polypropylene bottles, the washing media were relatively inefficient (around 30-40%). Adding a detergent or an organic solvent could increase deodorization efficiencies by up to 70-90% for these packaging types. A similar trend was observed for PE films having deodorization efficiencies in the range of 40-50% when washing with water or caustic soda and around 70-80% when a detergent was added.Polystyrene trays were most effectively deodorized with a detergent, achieving efficiencies up to 67%. Hence, this study shows that optimal washing processes should be tailored to specific packaging types to further improve deodorization and to eventually be able to meet ambitious European recycling targets. |
| https://doi.org/10.1016/j.scitotenv.2021.152467 |
Similar Articles
| ID | Score | Article |
|---|---|---|
23356
|
Cabanes, A; Valdés, FJ; Fullana, A A review on VOCs from recycled plastics(2020) | |
| 14616
|
Garofalo, E; Taurino, L; Di Maio, L; Neitzert, HC; Incarnato, L Assessment of Melt Compounding with Zeolites as an Effective Deodorization Strategy for Mixed Plastic Wastes and Comparison with Degassing(2023)Polymers, 15, 8 | |
| 13123
|
Horodytska, O; Cabanes, A; Fullana, A Non-intentionally added substances (NIAS) in recycled plastics(2020) | |
| 25409
|
van Velzen, EUT; Workala, Y; Teunissen, W; Smeding, I Volatile organic contaminants in HDPE milk bottles along the mechanical recycling value chain, revealing origins and contamination pathways(2024) | |
| 21899
|
Eriksen, MK; Christiansen, JD; Daugaard, AE; Astrup, TF Closing the loop for PET, PE and PP waste from households: Influence of material properties and product design for plastic recycling(2019) | |
| 13858
|
Singh, S; Pereira, J; Brandao, T; Oliveira, AL; Poças, F Recycling of polypropylene by supercritical carbon dioxide for extraction of contaminants from beverage cups. A comparison with polyethylene terephthalate and polylactic acid(2023)Journal Of The Science Of Food And Agriculture, 103, 3 | |
| 23322
|
Süss, M; Fischer, J Microplastic occurrence during the pre-treatment of polypropylene in a simulated washing process for mechanical recycling(2023) | |
| 26976
|
Welle, F Safety Evaluation of Polyethylene Terephthalate Chemical Recycling Processes(2021)Sustainability, 13, 22 | |
| 13746
|
Paiva, R; Pereira, ER; Wrona, M; Cruz, SA Optimization of Washing Parameters to Minimize the Degradation of Poly(lactic acid) Using Design of Experiments: A Contribution to the Recycling Chain(2024)Journal Of Polymers And The Environment, 32, 4 | |
| 15515
|
Felgel-Farnholz, A; Schweighuber, A; Klampfl, CW; Fischer, J Comparative study on the degradation of HDPE, LLDPE and LDPE during multiple extrusions(2023) |