世界のプラスチック包装廃棄物について、生産者と消費者が負担を分かち合う必要があります。(Producers and consumers must share burden of global plastic packaging waste)

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2022-05-25 イリノイ大学アーバナ・シャンペーン校


Plastic packaging waste pollutes the world’s oceans. Photo by pixahive.com

米国のプラスチック廃棄物のうち、リサイクルされているのはわずか14.5%程度で、ほとんどは埋立地となり、そこで何百年もかけて劣化していきます。米国やその他の先進国では、従来、プラスチック廃棄物をアジアに輸送していましたが、現在では多くの発展途上国が廃棄物の受け入れを拒否しています。
国際的な研究者チームによる新しい研究では、プラスチック包装廃棄物の世界的なパターンを調査しています。その結果、米国、ブラジル、中国の3カ国が廃棄物の供給国として上位を占めていることがわかりました。

<関連情報>

副産物を迂回できない場合。生産と輸出に組み込まれたプラスチック包装廃棄物 When one cannot bypass the byproducts: Plastic packaging waste embedded in production and export

Xiang Gao,Sandy Dall’erba,Brenna Ellison,Andre F. T. Avelino,Cuihong Yang
Journal of Industrial Ecology  Published: 24 May 2022
DOI:https://doi.org/10.1111/jiec.13282

Abstract

While packaging is praised for reducing waste of perishable food products, packaging waste is a growing concern. Its least recyclable type, plastics waste, is increasingly polluting the marine environment and many developing countries are now refusing to take the waste from developed countries. Before responsibility can be established, one has to identify the key producers and consumers. This paper adjusts the packaging waste satellite account in EXIOBASE 3 by combining the official waste data published by the World Bank. Based on input–output methods, we find that the world’s top suppliers of plastic packaging waste are the United States, China, and Brazil. Food and beverage products constitute the bulk of the problem. Yet, 21% of these countries’ plastic packaging waste is induced export. At the global level, it is 25.8%. About 76.0% of export-induced plastic packaging waste corresponds to packaging of the exported goods that will ultimately be disposed of in the destination country; while the others correspond to the packaging used in their supply-chain and wasted domestically. We conclude that international efforts need to assign shared responsibility and promote improvement in plastic packaging recyclability.

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