プラスチックのフューチャーとそのCO2排出量
Paul Stegmann1,2,3, Vassilis Daioglou4,5, Marc Londo6,7
1Utrecht University, Utrecht, The Netherlands. paul.stegmann@tno.nl.
Nature
|December 8, 2022
まとめ
プラスチックの生産は 温室効果ガスの排出を促します リサイクルとバイオマスを組み合わせた 循環型バイオエコノミーのアプローチは プラスチック部門を 排出量と資源使用量を削減する 純炭素吸収場に変えることができます
科学分野:
- 環境科学
- 材料科学
- 化学工学
背景:
- プラスチックの生産は急速に増加し,世界の温室効果ガス排出量に大きく貢献しています.
- 政策の変更がなければ プラスチックの需要とそれに伴うCO2排出量は 2100年までに3倍以上になると予測されています
研究 の 目的:
- 2100年までの世界的なプラスチックセクターのCO2排出削減の3つの経路を分析する.
- 排出量,資源消費量,炭素吸収量に対する様々な戦略の長期的な影響を評価する.
主な方法:
- プラスチック生産と廃棄物管理のライフサイクル評価
- 材料の流れと循環経済をモデル化する
- バイオベースの材料とリサイクルを含む排出削減経路の分析
主要な成果:
- 埋立地でのバイオベースの材料は,長期的に負の排出を達成できますが,主原料に依存しています.
- 循環型経済アプローチは資源消費を30%削減し,2050年までの排出削減を強化します
- リサイクルとバイオマスの利用を組み合わせた 循環型バイオエコノミーのアプローチは 埋立地を段階的に廃止することで 純炭素吸収場を作り出すことができます
結論:
- 循環型バイオエコノミーを通じて プラスチック部門は 純炭素吸収に 移行できるのです
- リサイクルとバイオマスの利用の増加を統合することは,負の排出量を達成し,資源依存度を減らすための鍵です.
- 材料の流れと循環経済原理のモデリングの改善は,長期的なセクターダイナミクスを理解するために不可欠です.
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