Projects per year
Abstract
This study investigates the capabilities of various measurement techniques for quantifying the cellulose content in reject material from a carton recycling center, which consists of polyethylene, cellulose, and aluminum, along with impurities. Different measurement techniques, including Fourier Transform Infrared Spectroscopy combined with Attenuated Total Reflectance (FTIR-ATR), cellulose dissolution using cupri-ethylenediamine (CED) from plastic followed by gravimetric analysis, acid hydrolysis combined with chromatography, and Thermal Gravimetric Analysis TGA, are employed in this study. Acid hydrolysis combined with chromatography and TGA shows comparable results when compared to different techniques for analyzing pulper reject. Dissolution with CED showed also comparable results but shows higher variation than TGA or chromatography. FTIR absorbance ratio of 1025/2917 correlates with cellulose content, but it shows high variation and lacks sensitivity below 5% cellulose content in polyethylene. This limitation is attributed to factors such as the limited measurement area (1.8 mm) and the large particle size of the cellulose and LDPE mixtures, possibly caused by inadequate grinding of LDPE. In conclusion, TGA and acid hydrolysis combined with chromatography are the most reliable for quantifying cellulose content in recycling reject, providing more consistent and accurate results than FTIR-ATR or CED dissolution methods.
Original language | English |
---|---|
Pages (from-to) | 9613-9621 |
Number of pages | 9 |
Journal | Cellulose |
Volume | 31 |
Issue number | 16 |
Early online date | 7 Oct 2024 |
DOIs | |
Publication status | Published - Nov 2024 |
MoE publication type | A1 Journal article-refereed |
Keywords
- CED (Cupri-ethylenediamine)
- FTIR spectroscopy (Fourier Transform Infrared Spectroscopy)
- HPAEC (High-Performance Anion-Exchange Chromatography)
- LDPE (low-Density polyethylene)
- Recycling
- TGA (thermogravimetric analysis)
Fingerprint
Dive into the research topics of 'Quantifying cellulose content in plastic-cellulose material mixtures'. Together they form a unique fingerprint.Projects
- 1 Active
-
Aalto University Bioinnovation Center
Hummel, M. (Principal investigator), Dessbesell, L. (Project Member), Ahola, S. (Project Member), Iannacchero, M. (Project Member), Mahler, L. (Project Member), Basnayaka, M. (Project Member), Babaeipour, S. (Project Member), Guridi Sotomayor, S. (Project Member), Westerback, H. (Project Member), Heimala, S. (Project Member), Real de Almeida, M. (Project Member), Qureshi, T. (Project Member), Hardjono, V. (Project Member), Piquemal, E. (Project Member), Mehmood, W. (Project Member) & Moussa, K. (Project Member)
01/01/2021 → 31/12/2030
Project: Domestic funds and foundations