Compositional analysis of waste plastic samples
Helminen, Kaisa Inkeri (2024)
2024
Julkaisu on tekijänoikeussäännösten alainen. Teosta voi lukea ja tulostaa henkilökohtaista käyttöä varten. Käyttö kaupallisiin tarkoituksiin on kielletty.
Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi-fe2024081364707
https://urn.fi/URN:NBN:fi-fe2024081364707
Tiivistelmä
In this thesis a comprehensive compositional analysis of selected waste plastic samples is presented, including mechanically recycled reject (MRR), rigid polyolefin waste (RPOW), and waste from electronic and electrical equipment (WEEE). Using Differential Scanning Calorimetry (DSC), Near-Infrared (NIR), and Fourier Transform Infrared (FT-IR) spectroscopy, the study identified and quantified polymer types and concentrations. X-ray Fluorescence (XRF) and Thermogravimetric Analysis (TGA) were used to further assessed the elemental and ash contents.
The analysis revealed a diverse mix of polymers in MRR, a more homogeneous composition in RPOW suitable for straightforward recycling, and a complex blend of materials in WEEE, requiring more complex recycling strategies due to the presence of flame retardants and heavy metals. These findings validate the employed analytical methods and suggest their potential for broader use in less-equipped laboratories, aiming to make quality compositional analysis more accessible and cost-effective.
This study was supported by two EU-funded projects, Primus and Treasource, and one Business Finland funded project, UrbanMill, highlighted the importance of advanced analytical techniques in advancing sustainable waste management practices and enhancing the efficacy of recycling technologies. The results facilitate the construction of tailored recycling strategies for specific polymer products and blends.
The analysis revealed a diverse mix of polymers in MRR, a more homogeneous composition in RPOW suitable for straightforward recycling, and a complex blend of materials in WEEE, requiring more complex recycling strategies due to the presence of flame retardants and heavy metals. These findings validate the employed analytical methods and suggest their potential for broader use in less-equipped laboratories, aiming to make quality compositional analysis more accessible and cost-effective.
This study was supported by two EU-funded projects, Primus and Treasource, and one Business Finland funded project, UrbanMill, highlighted the importance of advanced analytical techniques in advancing sustainable waste management practices and enhancing the efficacy of recycling technologies. The results facilitate the construction of tailored recycling strategies for specific polymer products and blends.