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Evaluating scenarios for carbon reduction using different tableware in China.

Qing Sun1, A-Lan Yi1, Hong-Gang Ni1

  • 1School of Urban Planning and Design, Peking University Shenzhen Graduate School, Shenzhen 518055, China.

The Science of the Total Environment
|June 12, 2021
PubMed
Summary

Disposable plastic tableware (DPT) generates significantly more CO2 emissions than reusable, ceramic, or straw alternatives. Switching to reusable options and improving recycling rates can drastically cut carbon footprints.

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Area of Science:

  • Environmental Science
  • Life Cycle Assessment
  • Sustainable Materials

Background:

  • Global consumption of disposable plastic tableware (DPT) is substantial due to its low cost and convenience.
  • DPT production and disposal contribute significantly to global carbon dioxide (CO2) emissions.

Purpose of the Study:

  • To compare the life cycle CO2 emissions of DPT with reusable plastic tableware (RPT), ceramic, and straw tableware.
  • To evaluate strategies for reducing CO2 emissions associated with tableware consumption.

Main Methods:

  • Life Cycle Assessment (LCA) methodology was employed to quantify CO2 emissions per person per meal for different tableware types.
  • Sensitivity analysis was conducted to assess the impact of various reduction strategies.
Keywords:
Carbon emissionCeramicsLife cycle assessment methodPlasticStrawTableware

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Main Results:

  • DPT generates substantially higher CO2 emissions (597 g/person/meal) compared to RPT (7.00 g), ceramic (9.55 g), and straw tableware (14.6 g).
  • Increasing DPT recycling to 60% could reduce emissions by 50%.
  • Replacing 60% of DPT with RPT could halve carbon emissions, with 100% replacement reducing emissions by 92%.

Conclusions:

  • Straw tableware offers a practical and safe alternative with a significantly lower environmental impact.
  • While RPT and ceramic tableware have lower direct CO2 emissions, they present other environmental and health concerns.
  • Choosing sustainable tableware options like straw is crucial for mitigating the greenhouse effect.