ポリエステルのモノマーリサイクルによる二酸化ナトリウムテレフタル酸塩溶液の吸着性去色化
Charlotte Lücking1,2, Mandy Paschetag1, Stephan Scholl1
1Institute for Chemical and Thermal Process Engineering, Technische Universität Braunschweig, Langer Kamp 7, 38106 Braunschweig, Germany.
Polymers
|February 13, 2026
まとめ
ポリエステル繊維のリサイクルには,モノメアの回収のためのデポリメリゼーションが含まれています. 活性炭は,リサイクルされたテレフタル酸から染料を効果的に除去し,高品質の繊維から繊維へのリサイクルを可能にし,循環型経済をサポートします.
科学分野:
- 化学工学は化学工学というものです.
- 材料科学 材料科学とは
- 環境科学 環境科学
背景:
- ポリエステル繊維廃棄物は,世界的に大きな課題となっています.
- バック・トゥ・モノマーリサイクル技術は,PETからテレフタル酸 (TPA) やエチレングリコールなどのモノマーを回収することを可能にします.
- 汚染物質,染料,添加物の完全な分離は,デポリメリゼーションによって達成可能な効果的なポリエステルリサイクルに不可欠です.
研究 の 目的:
- ポリエステル繊維廃棄物のアルカリ性水解から得られる二酸化ナトリウムテレフタラート溶液の吸着性脱色を調査する.
- 様々な吸着剤,温度,pHが脱色効率に与える影響を評価する.
- リサイクルされたTPAにおける工業的に重要な色値を達成するための最適な条件を特定する.
主な方法:
- ポリエステル繊維廃棄物のアルカリ性水解により,二酸化ナトリウムテレフタラート溶液を得る.
- 様々な吸着剤を用いたアドソルプティブ脱色実験.
- 温度 (30〜80°C) とpH (7〜12°C) の影響を体系的に調査する.
- 処理されたテレフタル酸溶液における色値の分析.
主要な成果:
- 活性炭は,脱色化のための効果的な吸着剤として特定されました.
- 最適な吸収条件は,中性pHと80°Cの温度であることが決定されました.
- リサイクルされたテレフタル酸は,活性炭吸附を使用して,工業仕様内の色値を達成しました.
結論:
- 活性炭を使用したアドソルプティブ脱色は,リサイクルされたテレフタル酸を浄化する有効な方法です.
- 高品質のリサイクルされたTPAを達成することは,高品質の繊維から繊維へのリサイクルを可能にするための重要なステップです.
- このプロセスは,ポリエステル繊維の循環経済の発展に大きく貢献しています.
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