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Assessing the Selection of PET Recycling Optionsin Japan: Multi-Criteria Decision Analysis
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This study examines PET plastic recycling options in Japan using a multi-criteria decision analysis (MCDA) framework, set against the global context in which only 9% of plastic waste is recycled and 22% bypasses proper waste management. The analysis evaluates competing recycling pathways to identify the most sustainable and economically viable approaches for managing Japan's PET waste streams.
Mismanaged plastic waste currently receives significant attention as it contributes to plastic pollution at the global, regional, national, and local levels.Improperly managed plastic waste leads to contamination of the air, water, and soil, causing environmental issues.Annually, the ocean receives at least eight million tonnes of plastic waste [1], which is expected to continue increasing.Only 9% of the plastic waste worldwide is recycled.Furthermore, 22% bypasses proper waste management systems and ends up in unregulated dumpsites, or terrestrial or aquatic environments, primarily in developing nations, while 19% is burned and 50% is dumped in landfills [2].In fact, over the forecast period, recycling rates are predicted to rise, and new markets for recycling are emerging.However, the disposal percentage is expected to remain high [3].
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Decision Analysis Approaches on the Collection Methods of Polyethylene Terephthalate Waste
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This study applied multi-criteria decision analysis (AHP and TOPSIS) to rank PET plastic waste collection strategies, finding that a threshold-based plastic bottle collection method outperformed alternatives across cost, environmental impact, and feasibility criteria, with results validated by a secondary VIKOR analysis.
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This systematic review analyzed 20 studies using multicriteria decision analysis (MCDA) to evaluate plastic waste management strategies across three continents, finding that AHP was the most popular method and that multi-strategy combinations consistently outperformed single-approach solutions.
Decision Analysis Approaches on the Collection Methods of Polyethylene Terephthalate Waste
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This study compared three decision-analysis methods (AHP, TOPSIS, and VIKOR) to rank PET plastic bottle cap collection strategies and found that threshold-based collection (collecting caps only above a weight or volume threshold) is the most cost-effective and practical approach. Although this paper focuses on PET waste management strategy rather than microplastic contamination directly, improving PET collection efficiency is an important upstream step for reducing the plastic debris that ultimately fragments into microplastics in the environment.
From pollution to progress: prioritising risks and sustainable packaging alternatives for PET bottles waste management in developing countries.
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This study used a risk-assessment and decision-making framework to analyze problems with plastic (PET) bottles, including pollution and microplastic leakage, and to compare alternative packaging materials. The analysis found that Polyethylene Furanoate (PEF) and aluminium scored best among alternatives, based on factors like environmental impact and recyclability.
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When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.