Improvement of the chemical recycling process of waste carbon fibre reinforced plastics using a mechanochemical process: Influence of process parameters
| Autor: | Chang-Soo Lee, Myung-Gyun Kim, Cao Zheng Yan, Young-Ju Kim, Ye-Jin Sim, Antony Mutua Nzioka |
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| Rok vydání: | 2018 |
| Předmět: |
Environmental Engineering
Materials science Carbon fibers 02 engineering and technology 010402 general chemistry 01 natural sciences Catalysis chemistry.chemical_compound Carbon Fiber Impurity Recycling 021001 nanoscience & nanotechnology Pulp and paper industry Pollution Carbon 0104 chemical sciences Solvent Boiling point chemistry Benzyl alcohol Scientific method visual_art Flash point visual_art.visual_art_medium 0210 nano-technology Plastics |
| Zdroj: | Waste Management & Research: The Journal for a Sustainable Circular Economy. 36:952-964 |
| ISSN: | 1096-3669 0734-242X |
| Popis: | We present the experimental results of an optimal recycling method for waste carbon fibre reinforced plastics (CFRPs) that is based on the application of a set of unit mechanochemical processes. The objectives of this study were to highlight the influence of process factors that are inherent in the chemical recycling process of waste CFRP. We investigated the influence of the soaking period, the application of a catalyst and impurities on the recycling process and recovery efficiency of the waste CFRP. Different combinations of the unit mechanochemical processes were investigated, and the effectiveness of the combination was analysed. The chemical recycling process was conducted using benzyl alcohol under ordinary pressure at initial solvent temperatures lower/equivalent to its flash point temperature. Experimental results showed that the solvent temperature increased up to boiling temperature levels when the mechanochemical process was initiated, thereby enhancing the mechanochemical process. The presence of impurities did not influence the recovery rate. Likewise, this experimental study highlighted the importance of accounting for the soaking period during the chemical recycling process: an extended soaking period resulted in a higher recovery rate, a lower portion of undissolved solids and recovered fibres of better quality. This research highlighted the significance of choosing the proper combination for the chemical recycling process as well as the benefits of recycling the waste CFRP with negligible application of the catalyst. |
| Databáze: | OpenAIRE |
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