混合廃棄物の固体ポリプロピレンのリサイクル: 起源は機械的リサイクル品質に影響しますか?
Anna-Maria Lipp1, Jessica Schlossnikl2, Isabelle Gentgen2,3
1Christian Doppler Laboratory for a Recycling-Based Circular Economy, Institute of Chemical, Environmental and Bioscience Engineering, TU Wien, Vienna, Austria.
まとめ
この研究は,混合廃棄物の固体ポリプロピレン (PP) がリサイクル可能であることを示しています. 復元されたPPの品質は商用グレードに匹敵し,オーストリアの循環経済目標をサポートしています.
科学分野:
- 材料科学
- 環境科学
- 化学工学
背景:
- オーストリアのプラスチックリサイクル率の低さと,非包装用プラスチック廃棄物の大量焼却により,リサイクル戦略の改善が求められています.
- 混雑した廃棄物流には大量のリサイクル可能なプラスチック,特に硬質ポリプロピレン (PP) が含まれており,これはしばしば焼却されます.
- 既存の研究は主にパッケージングプラスチックに焦点を当てており,混合廃棄物の非パッケージングプラスチックの再利用性を理解する上でギャップを残しています.
研究 の 目的:
- 混合廃棄物の固体ポリプロピレン (PP) のリサイクルの可能性をオーストリアで調査する.
- 包装用でないプラスチック廃棄物から得られるリサイクルPPの品質と性質を評価する.
- 混合プラスチック廃棄物のリサイクルが循環経済目標への潜在的貢献を評価する.
主な方法:
- 洗浄とシンク・フロート分離を含む混合プラスチック廃棄物の機械前処理
- 分類されたプラスチックをリサイクル製品に変換するポリマー加工技術
- リサイクレットの特性の包括的な評価:引力 (インパクト),熱,形状,およびレオロギー.
主要な成果:
- 混合廃棄物から回収された固いPPは,別々に収集された廃棄物と同等の汚れを含有しています.
- 少量のポリエチレン不純物を含んだ均質なリサイクル製品が成功しました.
- 生産されたリサイクル材料の品質は,特に弾性モジュールと収縮圧力は,商業的に利用可能なPPに匹敵します.
結論:
- オーストリアでは混雑した廃棄物流から固体ポリプロピレン (PP) のリサイクルが実行可能な選択肢です.
- 再利用されたPPは商業的な用途に適した性質を示し,プラスチックの循環性に貢献しています.
- 匂い,汚染物質,長期的性能,経済的な有効性に関するさらなる研究が推奨されています.
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