130899 20240201151019.0 doi 10.1016/j.resconrec.2021.105640 sideral 126227 ART-2021-126227 eng Su Q.-Z. Decontamination efficiencies of post-consumer high-density polyethylene milk bottles and prioritization of high concern volatile migrants 2021 High-density polyethylene (HDPE) milk bottles are well-distinguished from other plastics in the mix-collected plastic waste and have potential to be closed-loop recycled. To evaluate this option, volatile substances present in various recycled HDPE (rHDPE) pellets and flakes from postconsumer milk bottles were analysed for similarities between different industrial recycling companies and batches. All substances found were classified in five different levels based on toxicity, from level I to level V (high toxicity). Chemicals present in the samples from different recyclers varied considerably, while those from different batches of a given recycler gave similar results. However, the study of rHDPE stream mixed with high volume of non-milk-bottles provided significant differences between batches. Washing the rHDPE twice and applying extra decontamination techniques reduced to a half the intensities for most chemicals detected, including two toxicity level V substances, butylated hydroxytoluene and diethyl phthalate. Nevertheless, other two high concern compounds, octocrylene, and 2-ethylhexyl-4-methoxycinnamate were not significantly reduced and thus deserve special attention when decontaminating rHDPE and evaluating its feasibility for food contact uses. Extra decontamination was able to reduce the intensities of 1-dodecene and 1-tetradecene. In total, 265 substances were detected in migration tests (95% ethanol and 3% acetic acid) and 58 of them were prioritized by toxicity. Regarding volatile migrants, rHDPE with low content of non-milk-bottle could be safe for direct contact with low-fat content food. For high-fat foods, the main concerns could come from 1-tetradecene, octocrylene, and 2-ethylhexyl-4-methoxycinnamate. © 2021 The Author(s) Access copy available to the general public Unrestricted info:eu-repo/grantAgreement/ES/DGA-FEDER/T53-20R info:eu-repo/grantAgreement/ES/MICINN/RTI2018-097805-B-I00 info:eu-repo/semantics/openAccess by-nc-nd http://creativecommons.org/licenses/by-nc-nd/3.0/es/ 13.716 2021 ENVIRONMENTAL SCIENCES 12 / 279 = 0.043 2021 Q1 T1 ENGINEERING, ENVIRONMENTAL 4 / 54 = 0.074 2021 Q1 T1 2.589 2021 Waste Management and Disposal 2021 Q1 Economics and Econometrics 2021 Q1 17.9 2021 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Vera P. Universidad de Zaragoza (orcid)0000-0002-8765-4319 Salafranca J. Universidad de Zaragoza (orcid)0000-0002-6607-1309 Nerín C. Universidad de Zaragoza (orcid)0000-0003-2685-5739 2009 750 Universidad de Zaragoza Dpto. Química Analítica Área Química Analítica 2009 X Universidad de Zaragoza Dpto. Química Analítica Proy. investigación HVA 171 (2021), 105640 [11 pp] Resour. conserv. recycl. Resources, Conservation and Recycling 0921-3449 3886260 http://zaguan.unizar.es/record/130899/files/texto_completo.pdf Versión publicada 2664698 http://zaguan.unizar.es/record/130899/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:130899 articulos driver 2024-02-01-14:39:58 ARTICLE