PMID- 32549292
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20200928
IS  - 2073-4360 (Electronic)
IS  - 2073-4360 (Linking)
VI  - 12
IP  - 6
DP  - 2020 Jun 15
TI  - Assessment of Supercritical CO(2) Extraction as a Method for Plastic Waste 
      Decontamination.
LID - 10.3390/polym12061347 [doi]
LID - 1347
AB  - Due to the lack of advanced methods to clean plastic waste from organic 
      contaminants, this study aimed at evaluating supercritical extraction as a 
      decontamination method. Oil-adhesive high-density polyethylene (HD-PE) oil 
      containers were subjected to supercritical extraction using supercritical carbon 
      dioxide. The extraction was conducted at 300 bar, applying various temperatures 
      (i.e., 70, 80 and 90  degrees C). The study assessed the impact of temperature on the 
      decontamination efficiency. The variation in the samples' quality was first 
      analyzed using near infrared (NIR) spectroscopy. An analysis of the content of 
      polycyclic aromatic hydrocarbons (PAHs) was followed. Samples treated at 70 and 
      80  degrees C showed higher extraction efficiencies, in spite of the lower extraction 
      temperatures. The NIR analysis showed that the plastic specimens did not 
      experience degradation by the supercritical decontamination method. Moreover, the 
      NIR spectra of the extracted oil showed the presence of a wide range of 
      compounds, some of which are hazardous. This has been confirmed by a GC-MS 
      analysis of the extracted oil. Based on the provided assessment, the quality of 
      the decontaminated HD-PE plastic samples-from a contamination point of view-is 
      enhanced in comparison to untreated samples. The level of PAHs contamination 
      decreased to be within the allowed limits defined by the REACH regulation, and 
      also met the specifications of the German Product Safety Committee. This study 
      proved the effectiveness of the supercritical extraction using CO(2) in 
      extracting organic contaminants from plastics, while maintaining their quality.
FAU - Alassali, Ayah
AU  - Alassali A
AUID- ORCID: 0000-0001-5027-397X
AD  - Sustainable Resource and Waste Management, TUHH-Hamburg University of Technology, 
      Blohmstr., 15, 21079 Hamburg, Germany.
FAU - Aboud, Noor
AU  - Aboud N
AUID- ORCID: 0000-0001-9468-1975
AD  - Sustainable Resource and Waste Management, TUHH-Hamburg University of Technology, 
      Blohmstr., 15, 21079 Hamburg, Germany.
AD  - Eurotechnica GmbH, An den Stucken 55, D-22941 Bargteheide, Germany.
FAU - Kuchta, Kerstin
AU  - Kuchta K
AD  - Sustainable Resource and Waste Management, TUHH-Hamburg University of Technology, 
      Blohmstr., 15, 21079 Hamburg, Germany.
FAU - Jaeger, Philip
AU  - Jaeger P
AD  - Eurotechnica GmbH, An den Stucken 55, D-22941 Bargteheide, Germany.
FAU - Zeinolebadi, Ahmad
AU  - Zeinolebadi A
AD  - Polymer Consult Buchner GmbH, Dorfgrund 6, D-22397 Hamburg, Germany.
LA  - eng
PT  - Journal Article
DEP - 20200615
PL  - Switzerland
TA  - Polymers (Basel)
JT  - Polymers
JID - 101545357
PMC - PMC7362185
OTO - NOTNLM
OT  - decontamination
OT  - plastic waste
OT  - polycyclic aromatic hydrocarbons
OT  - supercritical extraction
COIS- The authors declare no conflict of interest.
EDAT- 2020/06/19 06:00
MHDA- 2020/06/19 06:01
PMCR- 2020/06/15
CRDT- 2020/06/19 06:00
PHST- 2020/05/23 00:00 [received]
PHST- 2020/06/08 00:00 [revised]
PHST- 2020/06/10 00:00 [accepted]
PHST- 2020/06/19 06:00 [entrez]
PHST- 2020/06/19 06:00 [pubmed]
PHST- 2020/06/19 06:01 [medline]
PHST- 2020/06/15 00:00 [pmc-release]
AID - polym12061347 [pii]
AID - polymers-12-01347 [pii]
AID - 10.3390/polym12061347 [doi]
PST - epublish
SO  - Polymers (Basel). 2020 Jun 15;12(6):1347. doi: 10.3390/polym12061347.